diff --git a/.github/workflows/mastercheck.yml b/.github/workflows/mastercheck.yml
index 7ab68704..09cc97c5 100644
--- a/.github/workflows/mastercheck.yml
+++ b/.github/workflows/mastercheck.yml
@@ -1,21 +1,20 @@
 name: Works with Zig master
 on: 
-  #   push:
-  #     branches:
-  #     - master
-  #   pull_request:
-  #     branches:
-  #     - master
-  #   schedule:
-  #     - cron: "0 0 * * *"
-  workflow_dispatch:
+    push:
+      branches:
+      - zig-0.12.0
+    pull_request:
+      branches:
+      - zig-0.12.0
+    schedule:
+      - cron: "0 0 * * *"
+    workflow_dispatch:
   
 jobs:
   ci:
     strategy:
       matrix:
-        # platform: [ubuntu-latest, windows-latest, macos-latest]
-        platform: [ubuntu-latest]
+        platform: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.platform }}
     steps:
       - uses: actions/checkout@v3
@@ -26,5 +25,46 @@ jobs:
         run: zig version
       - name: Build all examples
         run: zig build all
-      - name: Run all tests
-        run: zig build test
+      # Run tests separately so we can see more clearly which one fails
+      - name: Run mustache tests
+        run: zig build test-mustache
+      - name: Run httpparams tests
+        run: zig build test-httpparams
+      - name: Run sendfile tests
+        run: zig build test-sendfile
+      - name: Run authentication tests
+        run: zig build test-authentication
+      - name: Report end of tests
+        run: echo "tests finished"
+
+  update-readme:
+    runs-on: ubuntu-latest
+    permissions: 
+      id-token: write
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: goto-bus-stop/setup-zig@v2
+        with:
+          version: master
+
+      - name: Build announceybot
+        run: zig build announceybot
+
+      - name: Run script to update README
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG_NAME: ${{ steps.tag.outputs.version }}
+        run: |
+          zig-out/bin/announceybot update-readme "zig-0.12.0"
+  
+      - name: Commit and push if it has changed
+        run: |
+          git diff
+          git checkout zig-0.12.0
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git commit -am "Update README"
+          git push origin zig-0.12.0
+>>>>>>> zig-0.12.0
diff --git a/.gitignore b/.gitignore
index 6b2dd8e4..6d2d37c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,7 +11,6 @@ wrk/csharp/obj/
 wrk/csharp/out/
 scratch
 **/.mypy_cache/*
-docs/
 .DS_Store
 .vs/
 **/*.perflog
diff --git a/README.md b/README.md
index 4ca730cb..b341483a 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,3 @@
-
-
 # ⚡zap⚡ - blazingly fast backends in zig
 
 ![](https://github.com/zigzap/zap/actions/workflows/build-zig-11.yml/badge.svg) ![](https://github.com/zigzap/zap/actions/workflows/mastercheck.yml/badge.svg) [![Discord](https://img.shields.io/discord/1107835896356675706?label=chat&logo=discord&style=plastic)](https://discord.gg/jQAAN6Ubyj)
@@ -26,17 +24,17 @@ that it proved to be:
 
 Exactly the goals I set out to achieve!
 
-
 ## Most FAQ:
 
-### Zap uses the latest stable zig release (0.11.0) for a reason. So you don't have to keep up with frequent breaking changes. It's an "LTS feature". If you want to use zig master, use the `zig-0.12.0` branch but be aware that I don't provide `build.zig.zon` snippets or tagged releases for it for the time being. If you know what you are doing, that shouldn't stop you from using it with zig master though.
+### Zap uses the latest stable zig release (0.1@.0) for a reason. So you don't have to keep up with frequent breaking changes. It's an "LTS feature". If you want to use zig master, use the `zig-0.13.0` branch (coming soon) but be aware that I don't provide `build.zig.zon` snippets or tagged releases for it for the time being. If you know what you are doing, that shouldn't stop you from using it with zig master though.
 
 - Q: **Where is the API documentation?**
-    - A: Docs are a work in progress. You can check them out [here](https://zigzap.org/zap). The docs are based on the `zig-0.12.0` branch but apply to the current release (zig 0.11.0), too.
+    - A: Docs are a work in progress. You can check them out [here](https://zigzap.org/zap).
+    - A: Run `zig build run-docserver` to serve them locally.
 - Q: **Zap doesn't build with Zig master?**
-    - A: See the 0.12.0 branch. An example of how to use it is
-      [here](https://github.com/zigzap/hello-0.12.0). Please note that the 0.12.0
-      branch is not the official master branch of ZAP. Yet. Until zig 0.12.0 is
+    - A: See the 0.13.0 branch (soon). An example of how to use it is
+      [here](https://github.com/zigzap/hello-0.13.0). Please note that the 0.13.0
+      branch is not the official master branch of ZAP. Yet. Until zig 0.13.0 is
       released.
 - Q: **Does ZAP work on Windows?**
     - A: No. This is due to the underlying facil.io C library. Future versions of
@@ -57,6 +55,10 @@ I recommend checking out **Endpoint-based examples for more realistic
 use cases**. Most of the examples are super stripped down to only include 
 what's necessary to show a feature.
 
+**NOTE: To see API docs, run `zig build run-docserver`.** To specify a custom
+port and docs dir: `zig build docserver && zig-out/bin/docserver --port=8989
+--docs=path/to/docs`.
+
 - **Super easy build process**: Zap's `build.zig` now uses the new Zig package
   manager for its C-dependencies, no git submodules anymore.
   - _tested on Linux and macOS (arm, M1)_
@@ -222,7 +224,7 @@ code leaks memory.
 
 ## Getting started
 
-Make sure you have **the latest zig release (0.11.0)** installed. Fetch it from
+Make sure you have zig 0.12.0 installed. Fetch it from
 [here](https://ziglang.org/download).
 
 ```shell
@@ -236,7 +238,7 @@ $ # open http://localhost:3000 in your browser
 
 ## Using ⚡zap⚡ in your own projects
 
-Make sure you have **the latest zig release (0.11.0)** installed. Fetch it from
+Make sure you have **the latest zig release (0.12.0)** installed. Fetch it from
 [here](https://ziglang.org/download).
 
 If you don't have an existing zig project, create one like this:
@@ -250,7 +252,7 @@ $ git init      ## (optional)
 `nix develop` to get a development shell providing zig and all
 dependencies to build and run the GO, python, and rust examples for the
 `wrk` performance tests. For the mere building of zap projects, 
-`nix develop .#build` will only fetch zig 0.11.0.
+`nix develop .#build` will only fetch zig 0.11.0. TODO: upgrade to zig 0.12.
 
 With an existing Zig project, adding Zap to it is easy:
 
@@ -268,9 +270,14 @@ To add zap to `build.zig.zon`:
     .dependencies = .{
         // zap v0.6.0
         .zap = .{
-            .url = "https://github.com/zigzap/zap/archive/refs/tags/v0.6.0.tar.gz",
-            .hash = "1220a5a1e6b18fa384d8a98e5d5a25720ddadbcfed01da2e4ca55c7cfb3dc1caa62a",
-        }
+            // when tagged:
+            // .url = "https://github.com/zigzap/zap/archive/refs/tags/zig-0.12.0.tar.gz",
+            .url = "https://github.com/zigzap/zap/archive/zig-0.12.0.tar.gz",
+            .hash = "122002bc4a3fb6d4c465ce9f7f0af06e9ffbe38a6ed8c7375a2121d05eee294af893",
+        },
+        .paths = .{
+            "",
+        },
     }
 }
 ```
@@ -285,7 +292,8 @@ Then, in your `build.zig`'s `build` function, add the following before
         .optimize = optimize,
         .openssl = false, // set to true to enable TLS support
     });
-    exe.addModule("zap", zap.module("zap"));
+
+    exe.root_module.addImport("zap", zap.module("zap"));
     exe.linkLibrary(zap.artifact("facil.io"));
 ```
 
@@ -404,28 +412,3 @@ pub fn main() !void {
     });
 }
 ```
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
diff --git a/build.zig b/build.zig
index 7279ee49..a8d2f4ba 100644
--- a/build.zig
+++ b/build.zig
@@ -1,11 +1,11 @@
 const std = @import("std");
 const build_facilio = @import("facil.io/build.zig").build_facilio;
 
-pub fn build(b: *std.build.Builder) !void {
+pub fn build(b: *std.Build) !void {
     const target = b.standardTargetOptions(.{});
-    if (target.getOsTag() == .windows) {
+    if (target.result.os.tag == .windows) {
         std.log.err("\x1b[31mPlatform Not Supported\x1b[0m\nCurrently, Facil.io and Zap are not compatible with Windows. Consider using Linux or Windows Subsystem for Linux (WSL) instead.\nFor more information, please see:\n- https://github.com/zigzap/zap#most-faq\n- https://facil.io/#forking-contributing-and-all-that-jazz\n", .{});
-        std.os.exit(1);
+        std.process.exit(1);
     }
     // Standard release options allow the person running `zig build` to select
     // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
@@ -13,24 +13,39 @@ pub fn build(b: *std.build.Builder) !void {
 
     const use_openssl = b.option(bool, "openssl", "Use system-installed openssl for TLS support in zap") orelse blk: {
         // Alternatively, use an os env var to determine whether to build openssl support
-        if (std.os.getenv("ZAP_USE_OPENSSL")) |val| {
+        if (std.posix.getenv("ZAP_USE_OPENSSL")) |val| {
             if (std.mem.eql(u8, val, "true")) break :blk true;
         }
         break :blk false;
     };
 
     // create a module to be used internally.
-    var zap_module = b.createModule(.{
-        .source_file = .{ .path = "src/zap.zig" },
+    const zap_module = b.addModule("zap", .{
+        .root_source_file = .{ .path = "src/zap.zig" },
     });
 
     // register the module so it can be referenced using the package manager.
-    try b.modules.put(b.dupe("zap"), zap_module);
+    // try b.modules.put(b.dupe("zap"), zap_module);
 
     const facilio = try build_facilio("facil.io", b, target, optimize, use_openssl);
 
     const all_step = b.step("all", "build all examples");
 
+    // -- Docs
+    const docs_obj = b.addObject(.{
+        .name = "zap", // name doesn't seem to matter
+        .root_source_file = .{ .path = "src/zap.zig" },
+        .target = target,
+        .optimize = .Debug,
+    });
+    const install_docs = b.addInstallDirectory(.{
+        .install_dir = .prefix,
+        .install_subdir = "zap", // will also be the main namespace in the docs
+        .source_dir = docs_obj.getEmittedDocs(),
+    });
+    b.step("docs", "Build docs").dependOn(&install_docs.step);
+    // --
+
     inline for ([_]struct {
         name: []const u8,
         src: []const u8,
@@ -85,8 +100,8 @@ pub fn build(b: *std.build.Builder) !void {
             .optimize = optimize,
         });
 
+        example.root_module.addImport("zap", zap_module);
         example.linkLibrary(facilio);
-        example.addModule("zap", zap_module);
 
         // const example_run = example.run();
         const example_run = b.addRunArtifact(example);
@@ -125,7 +140,7 @@ pub fn build(b: *std.build.Builder) !void {
         .optimize = optimize,
     });
     auth_tests.linkLibrary(facilio);
-    auth_tests.addModule("zap", zap_module);
+    auth_tests.root_module.addImport("zap", zap_module);
 
     const run_auth_tests = b.addRunArtifact(auth_tests);
     const install_auth_tests = b.addInstallArtifact(auth_tests, .{});
@@ -138,7 +153,7 @@ pub fn build(b: *std.build.Builder) !void {
         .optimize = optimize,
     });
     mustache_tests.linkLibrary(facilio);
-    mustache_tests.addModule("zap", zap_module);
+    mustache_tests.root_module.addImport("zap", zap_module);
 
     const run_mustache_tests = b.addRunArtifact(mustache_tests);
     const install_mustache_tests = b.addInstallArtifact(mustache_tests, .{});
@@ -152,7 +167,8 @@ pub fn build(b: *std.build.Builder) !void {
     });
 
     httpparams_tests.linkLibrary(facilio);
-    httpparams_tests.addModule("zap", zap_module);
+    httpparams_tests.root_module.addImport("zap", zap_module);
+
     const run_httpparams_tests = b.addRunArtifact(httpparams_tests);
     // TODO: for some reason, tests aren't run more than once unless
     //       dependencies have changed.
@@ -169,7 +185,7 @@ pub fn build(b: *std.build.Builder) !void {
     });
 
     sendfile_tests.linkLibrary(facilio);
-    sendfile_tests.addModule("zap", zap_module);
+    sendfile_tests.root_module.addImport("zap", zap_module);
     const run_sendfile_tests = b.addRunArtifact(sendfile_tests);
     const install_sendfile_tests = b.addInstallArtifact(sendfile_tests, .{});
 
@@ -202,7 +218,7 @@ pub fn build(b: *std.build.Builder) !void {
     //
     // pkghash
     //
-    var pkghash_exe = b.addExecutable(.{
+    const pkghash_exe = b.addExecutable(.{
         .name = "pkghash",
         .root_source_file = .{ .path = "./tools/pkghash.zig" },
         .target = target,
@@ -213,10 +229,33 @@ pub fn build(b: *std.build.Builder) !void {
     pkghash_step.dependOn(&pkghash_build_step.step);
     all_step.dependOn(&pkghash_build_step.step);
 
+    //
+    // docserver
+    //
+    const docserver_exe = b.addExecutable(.{
+        .name = "docserver",
+        .root_source_file = .{ .path = "./tools/docserver.zig" },
+        .target = target,
+        .optimize = optimize,
+    });
+    docserver_exe.linkLibrary(facilio);
+    docserver_exe.root_module.addImport("zap", zap_module);
+    var docserver_step = b.step("docserver", "Build docserver");
+    const docserver_build_step = b.addInstallArtifact(docserver_exe, .{});
+    docserver_step.dependOn(&docserver_build_step.step);
+    docserver_step.dependOn(&install_docs.step);
+
+    const docserver_run_step = b.step("run-docserver", "run the docserver");
+    const docserver_run = b.addRunArtifact(docserver_exe);
+    docserver_run_step.dependOn(&docserver_run.step);
+    docserver_run_step.dependOn(docserver_step);
+
+    all_step.dependOn(&docserver_build_step.step);
+
     //
     // announceybot
     //
-    var announceybot_exe = b.addExecutable(.{
+    const announceybot_exe = b.addExecutable(.{
         .name = "announceybot",
         .root_source_file = .{ .path = "./tools/announceybot.zig" },
         .target = target,
diff --git a/build.zig.zon b/build.zig.zon
index f7602046..a355b3b3 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -1 +1,10 @@
-.{ .name = "zap", .version = "0.6.0" }
+.{
+    .name = "zap",
+    .version = "0.7.0",
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+        "facil.io",
+    },
+}
diff --git a/doc/release-template.md b/doc/release-template.md
index e41db517..cd08a68b 100644
--- a/doc/release-template.md
+++ b/doc/release-template.md
@@ -22,7 +22,10 @@ Here is a complete `build.zig.zon` example:
         .zap = .{
             .url = "https://github.com/zigzap/zap/archive/refs/tags/{tag}.tar.gz",
             .hash = "{hash}",
-        }
+        },
+        .paths = .{
+            "",
+        },
     }
 }
 
@@ -35,7 +38,8 @@ Then, in your `build.zig`'s `build` function, add the following before
     const zap = b.dependency("zap", .{
         .target = target,
         .optimize = optimize,
+        .openssl = false, // set to true to enable TLS support
     });
-    exe.addModule("zap", zap.module("zap"));
+    exe.root_module.addImport("zap", zap.module("zap"));
     exe.linkLibrary(zap.artifact("facil.io"));
 ```
diff --git a/examples/bindataformpost/bindataformpost.zig b/examples/bindataformpost/bindataformpost.zig
index 944b92e7..4c2c7ad1 100644
--- a/examples/bindataformpost/bindataformpost.zig
+++ b/examples/bindataformpost/bindataformpost.zig
@@ -5,7 +5,7 @@ const Handler = struct {
     var alloc: std.mem.Allocator = undefined;
 
     pub fn on_request(r: zap.Request) void {
-        // check for FORM parameters
+        // parse for FORM (body) parameters first
         r.parseBody() catch |err| {
             std.log.err("Parse Body error: {any}. Expected if body is empty", .{err});
         };
@@ -13,10 +13,11 @@ const Handler = struct {
         if (r.body) |body| {
             std.log.info("Body length is {any}\n", .{body.len});
         }
-        // check for query params (for ?terminate=true)
+
+        // parse potential query params (for ?terminate=true)
         r.parseQuery();
 
-        var param_count = r.getParamCount();
+        const param_count = r.getParamCount();
         std.log.info("param_count: {}", .{param_count});
 
         // iterate over all params
@@ -56,8 +57,11 @@ const Handler = struct {
                     else => {
                         // might be a string param, we don't care
                         // let's just get it as string
+                        // always_alloc param = false -> the string will be a slice from the request buffer
+                        // --> no deinit necessary
                         if (r.getParamStr(Handler.alloc, kv.key.str, false)) |maybe_str| {
                             const value: []const u8 = if (maybe_str) |s| s.str else "(no value)";
+                            // above, we didn't defer s.deinit because the string is just a slice from the request buffer
                             std.log.debug("   {s} = {s}", .{ kv.key.str, value });
                         } else |err| {
                             std.log.err("Error: {any}\n", .{err});
@@ -70,7 +74,6 @@ const Handler = struct {
         // check if we received a terminate=true parameter
         if (r.getParamStr(Handler.alloc, "terminate", false)) |maybe_str| {
             if (maybe_str) |*s| {
-                defer s.deinit();
                 std.log.info("?terminate={s}\n", .{s.str});
                 if (std.mem.eql(u8, s.str, "true")) {
                     zap.stop();
@@ -87,7 +90,7 @@ pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{
         .thread_safe = true,
     }){};
-    var allocator = gpa.allocator();
+    const allocator = gpa.allocator();
 
     Handler.alloc = allocator;
 
diff --git a/examples/cookies/cookies.zig b/examples/cookies/cookies.zig
index 10ee440e..087731fe 100644
--- a/examples/cookies/cookies.zig
+++ b/examples/cookies/cookies.zig
@@ -5,17 +5,19 @@ const zap = @import("zap");
 fn makeRequest(a: std.mem.Allocator, url: []const u8) !void {
     const uri = try std.Uri.parse(url);
 
-    var h = std.http.Headers{ .allocator = a };
-    defer h.deinit();
-
     var http_client: std.http.Client = .{ .allocator = a };
     defer http_client.deinit();
 
-    var req = try http_client.request(.GET, uri, h, .{});
+    var server_header_buffer: [2048]u8 = undefined;
+    var req = try http_client.open(.GET, uri, .{
+        .server_header_buffer = &server_header_buffer,
+        .extra_headers = &.{
+            .{ .name = "cookie", .value = "ZIG_ZAP=awesome" },
+        },
+    });
     defer req.deinit();
 
-    try req.headers.append("cookie", "ZIG_ZAP=awesome");
-    try req.start();
+    try req.send();
     try req.wait();
 }
 
@@ -28,7 +30,7 @@ pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{
         .thread_safe = true,
     }){};
-    var allocator = gpa.allocator();
+    const allocator = gpa.allocator();
 
     const Handler = struct {
         var alloc: std.mem.Allocator = undefined;
@@ -37,17 +39,19 @@ pub fn main() !void {
             std.debug.print("\n=====================================================\n", .{});
             defer std.debug.print("=====================================================\n\n", .{});
 
-            r.parseCookies(false);
+            r.parseCookies(false); // url_encoded = false
 
-            var cookie_count = r.getCookiesCount();
+            const cookie_count = r.getCookiesCount();
             std.log.info("cookie_count: {}", .{cookie_count});
 
-            // iterate over all cookies as strings
+            // iterate over all cookies as strings (always_alloc=false)
             var strCookies = r.cookiesToOwnedStrList(alloc, false) catch unreachable;
             defer strCookies.deinit();
             std.debug.print("\n", .{});
             for (strCookies.items) |kv| {
                 std.log.info("CookieStr `{s}` is `{s}`", .{ kv.key.str, kv.value.str });
+                // we don't need to deinit kv.key and kv.value because we requested always_alloc=false
+                // so they are just slices into the request buffer
             }
 
             std.debug.print("\n", .{});
@@ -63,7 +67,7 @@ pub fn main() !void {
             std.debug.print("\n", .{});
             if (r.getCookieStr(alloc, "ZIG_ZAP", false)) |maybe_str| {
                 if (maybe_str) |*s| {
-                    defer s.deinit();
+                    defer s.deinit(); // unnecessary because always_alloc=false
 
                     std.log.info("Cookie ZIG_ZAP = {s}", .{s.str});
                 } else {
diff --git a/examples/endpoint/main.zig b/examples/endpoint/main.zig
index 31bb487b..dcfffda2 100644
--- a/examples/endpoint/main.zig
+++ b/examples/endpoint/main.zig
@@ -3,7 +3,7 @@ const zap = @import("zap");
 const UserWeb = @import("userweb.zig");
 const StopEndpoint = @import("stopendpoint.zig");
 
-// this is just to demo that we can catch arbitrary slugs
+// this is just to demo that we can catch arbitrary slugs as fallback
 fn on_request(r: zap.Request) void {
     if (r.path) |the_path| {
         std.debug.print("REQUESTED PATH: {s}\n", .{the_path});
@@ -16,7 +16,7 @@ pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{
         .thread_safe = true,
     }){};
-    var allocator = gpa.allocator();
+    const allocator = gpa.allocator();
 
     // we scope everything that can allocate within this block for leak detection
     {
@@ -56,7 +56,7 @@ pub fn main() !void {
 
         // and run
         zap.start(.{
-            .threads = 2000,
+            .threads = 2,
             // IMPORTANT! It is crucial to only have a single worker for this example to work!
             // Multiple workers would have multiple copies of the users hashmap.
             //
diff --git a/examples/endpoint/users.zig b/examples/endpoint/users.zig
index 75c114ed..2ab7a17b 100644
--- a/examples/endpoint/users.zig
+++ b/examples/endpoint/users.zig
@@ -41,12 +41,12 @@ pub fn addByName(self: *Self, first: ?[]const u8, last: ?[]const u8) !usize {
     user.lastnamelen = 0;
 
     if (first) |firstname| {
-        std.mem.copy(u8, user.firstnamebuf[0..], firstname);
+        @memcpy(user.firstnamebuf[0..firstname.len], firstname);
         user.firstnamelen = firstname.len;
     }
 
     if (last) |lastname| {
-        std.mem.copy(u8, user.lastnamebuf[0..], lastname);
+        @memcpy(user.lastnamebuf[0..lastname.len], lastname);
         user.lastnamelen = lastname.len;
     }
 
@@ -101,11 +101,11 @@ pub fn update(
         pUser.firstnamelen = 0;
         pUser.lastnamelen = 0;
         if (first) |firstname| {
-            std.mem.copy(u8, pUser.firstnamebuf[0..], firstname);
+            @memcpy(pUser.firstnamebuf[0..firstname.len], firstname);
             pUser.firstnamelen = firstname.len;
         }
         if (last) |lastname| {
-            std.mem.copy(u8, pUser.lastnamebuf[0..], lastname);
+            @memcpy(pUser.lastnamebuf[0..lastname.len], lastname);
             pUser.lastnamelen = lastname.len;
         }
     }
diff --git a/examples/endpoint/userweb.zig b/examples/endpoint/userweb.zig
index ca11a6ab..6c6775f8 100644
--- a/examples/endpoint/userweb.zig
+++ b/examples/endpoint/userweb.zig
@@ -54,7 +54,8 @@ fn userIdFromPath(self: *Self, path: []const u8) ?usize {
 }
 
 fn getUser(e: *zap.Endpoint, r: zap.Request) void {
-    const self = @fieldParentPtr(Self, "ep", e);
+    const self: *Self = @fieldParentPtr("ep", e);
+
     if (r.path) |path| {
         // /users
         if (path.len == e.settings.path.len) {
@@ -81,9 +82,9 @@ fn listUsers(self: *Self, r: zap.Request) void {
 }
 
 fn postUser(e: *zap.Endpoint, r: zap.Request) void {
-    const self = @fieldParentPtr(Self, "ep", e);
+    const self: *Self = @fieldParentPtr("ep", e);
     if (r.body) |body| {
-        var maybe_user: ?std.json.Parsed(User) = std.json.parseFromSlice(User, self.alloc, body, .{}) catch null;
+        const maybe_user: ?std.json.Parsed(User) = std.json.parseFromSlice(User, self.alloc, body, .{}) catch null;
         if (maybe_user) |u| {
             defer u.deinit();
             if (self._users.addByName(u.value.first_name, u.value.last_name)) |id| {
@@ -100,12 +101,12 @@ fn postUser(e: *zap.Endpoint, r: zap.Request) void {
 }
 
 fn putUser(e: *zap.Endpoint, r: zap.Request) void {
-    const self = @fieldParentPtr(Self, "ep", e);
+    const self: *Self = @fieldParentPtr("ep", e);
     if (r.path) |path| {
         if (self.userIdFromPath(path)) |id| {
             if (self._users.get(id)) |_| {
                 if (r.body) |body| {
-                    var maybe_user: ?std.json.Parsed(User) = std.json.parseFromSlice(User, self.alloc, body, .{}) catch null;
+                    const maybe_user: ?std.json.Parsed(User) = std.json.parseFromSlice(User, self.alloc, body, .{}) catch null;
                     if (maybe_user) |u| {
                         defer u.deinit();
                         var jsonbuf: [128]u8 = undefined;
@@ -126,7 +127,7 @@ fn putUser(e: *zap.Endpoint, r: zap.Request) void {
 }
 
 fn deleteUser(e: *zap.Endpoint, r: zap.Request) void {
-    const self = @fieldParentPtr(Self, "ep", e);
+    const self: *Self = @fieldParentPtr("ep", e);
     if (r.path) |path| {
         if (self.userIdFromPath(path)) |id| {
             var jsonbuf: [128]u8 = undefined;
diff --git a/examples/hello_json/hello_json.zig b/examples/hello_json/hello_json.zig
index 4361e281..3fbae48c 100644
--- a/examples/hello_json/hello_json.zig
+++ b/examples/hello_json/hello_json.zig
@@ -41,7 +41,7 @@ fn setupUserData(a: std.mem.Allocator) !void {
 }
 
 pub fn main() !void {
-    var a = std.heap.page_allocator;
+    const a = std.heap.page_allocator;
     try setupUserData(a);
     var listener = zap.HttpListener.init(.{
         .port = 3000,
diff --git a/examples/http_params/http_params.zig b/examples/http_params/http_params.zig
index d6753f3d..e387e9b0 100644
--- a/examples/http_params/http_params.zig
+++ b/examples/http_params/http_params.zig
@@ -5,16 +5,16 @@ const zap = @import("zap");
 fn makeRequest(a: std.mem.Allocator, url: []const u8) !void {
     const uri = try std.Uri.parse(url);
 
-    var h = std.http.Headers{ .allocator = a };
-    defer h.deinit();
-
     var http_client: std.http.Client = .{ .allocator = a };
     defer http_client.deinit();
 
-    var req = try http_client.request(.GET, uri, h, .{});
+    var server_header_buffer: [2048]u8 = undefined;
+    var req = try http_client.open(.GET, uri, .{
+        .server_header_buffer = &server_header_buffer,
+    });
     defer req.deinit();
 
-    try req.start();
+    try req.send();
     try req.wait();
 }
 
@@ -27,7 +27,7 @@ pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{
         .thread_safe = true,
     }){};
-    var allocator = gpa.allocator();
+    const allocator = gpa.allocator();
 
     const Handler = struct {
         var alloc: std.mem.Allocator = undefined;
@@ -44,7 +44,7 @@ pub fn main() !void {
             // check for query parameters
             r.parseQuery();
 
-            var param_count = r.getParamCount();
+            const param_count = r.getParamCount();
             std.log.info("param_count: {}", .{param_count});
 
             // ================================================================
diff --git a/examples/https/https.zig b/examples/https/https.zig
index 88c53a72..aeb7930e 100644
--- a/examples/https/https.zig
+++ b/examples/https/https.zig
@@ -30,7 +30,7 @@ fn help_and_exit(filename: []const u8, err: anyerror) void {
     ,
         .{ filename, err },
     );
-    std.os.exit(1);
+    std.process.exit(1);
 }
 pub fn main() !void {
     const CERT_FILE = "mycert.pem";
diff --git a/examples/middleware/middleware.zig b/examples/middleware/middleware.zig
index 5687f936..776a930d 100644
--- a/examples/middleware/middleware.zig
+++ b/examples/middleware/middleware.zig
@@ -72,7 +72,7 @@ const UserMiddleWare = struct {
     pub fn onRequest(handler: *Handler, r: zap.Request, context: *Context) bool {
 
         // this is how we would get our self pointer
-        var self = @fieldParentPtr(Self, "handler", handler);
+        const self: *Self = @fieldParentPtr("handler", handler);
         _ = self;
 
         // do our work: fill in the user field of the context
@@ -115,7 +115,7 @@ const SessionMiddleWare = struct {
     // note that the first parameter is of type *Handler, not *Self !!!
     pub fn onRequest(handler: *Handler, r: zap.Request, context: *Context) bool {
         // this is how we would get our self pointer
-        var self = @fieldParentPtr(Self, "handler", handler);
+        const self: *Self = @fieldParentPtr("handler", handler);
         _ = self;
 
         context.session = Session{
@@ -151,7 +151,7 @@ const HtmlMiddleWare = struct {
     pub fn onRequest(handler: *Handler, r: zap.Request, context: *Context) bool {
 
         // this is how we would get our self pointer
-        var self = @fieldParentPtr(Self, "handler", handler);
+        const self: *Self = @fieldParentPtr("handler", handler);
         _ = self;
 
         std.debug.print("\n\nHtmlMiddleware: handling request with context: {any}\n\n", .{context});
@@ -190,7 +190,7 @@ pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{
         .thread_safe = true,
     }){};
-    var allocator = gpa.allocator();
+    const allocator = gpa.allocator();
     SharedAllocator.init(allocator);
 
     // we create our HTML middleware component that handles the request
diff --git a/examples/middleware_with_endpoint/middleware_with_endpoint.zig b/examples/middleware_with_endpoint/middleware_with_endpoint.zig
index 9e4b6c8f..543600c7 100644
--- a/examples/middleware_with_endpoint/middleware_with_endpoint.zig
+++ b/examples/middleware_with_endpoint/middleware_with_endpoint.zig
@@ -60,7 +60,7 @@ const UserMiddleWare = struct {
     pub fn onRequest(handler: *Handler, r: zap.Request, context: *Context) bool {
 
         // this is how we would get our self pointer
-        var self = @fieldParentPtr(Self, "handler", handler);
+        const self: *Self = @fieldParentPtr("handler", handler);
         _ = self;
 
         // do our work: fill in the user field of the context
@@ -105,7 +105,7 @@ const SessionMiddleWare = struct {
     // note that the first parameter is of type *Handler, not *Self !!!
     pub fn onRequest(handler: *Handler, r: zap.Request, context: *Context) bool {
         // this is how we would get our self pointer
-        var self = @fieldParentPtr(Self, "handler", handler);
+        const self: *Self = @fieldParentPtr("handler", handler);
         _ = self;
 
         context.session = Session{
@@ -155,7 +155,7 @@ const HtmlEndpoint = struct {
     }
 
     pub fn get(ep: *zap.Endpoint, r: zap.Request) void {
-        const self = @fieldParentPtr(Self, "ep", ep);
+        const self: *Self = @fieldParentPtr("ep", ep);
         _ = self;
 
         var buf: [1024]u8 = undefined;
@@ -200,7 +200,7 @@ pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{
         .thread_safe = true,
     }){};
-    var allocator = gpa.allocator();
+    const allocator = gpa.allocator();
     SharedAllocator.init(allocator);
 
     // create the endpoint
diff --git a/examples/simple_router/simple_router.zig b/examples/simple_router/simple_router.zig
index 9d58b993..eb588392 100644
--- a/examples/simple_router/simple_router.zig
+++ b/examples/simple_router/simple_router.zig
@@ -73,7 +73,7 @@ pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{
         .thread_safe = true,
     }){};
-    var allocator = gpa.allocator();
+    const allocator = gpa.allocator();
 
     var simpleRouter = zap.Router.init(allocator, .{
         .not_found = not_found,
diff --git a/examples/websockets/websockets.zig b/examples/websockets/websockets.zig
index fea0933e..e3472420 100644
--- a/examples/websockets/websockets.zig
+++ b/examples/websockets/websockets.zig
@@ -46,8 +46,8 @@ const ContextManager = struct {
         self.lock.lock();
         defer self.lock.unlock();
 
-        var ctx = try self.allocator.create(Context);
-        var userName = try std.fmt.allocPrint(
+        const ctx = try self.allocator.create(Context);
+        const userName = try std.fmt.allocPrint(
             self.allocator,
             "{s}{d}",
             .{ self.usernamePrefix, self.contexts.items.len },
@@ -202,7 +202,7 @@ pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{
         .thread_safe = true,
     }){};
-    var allocator = gpa.allocator();
+    const allocator = gpa.allocator();
 
     GlobalContextManager = ContextManager.init(allocator, "chatroom", "user-");
     defer GlobalContextManager.deinit();
diff --git a/facil.io/build.zig b/facil.io/build.zig
index e0722428..690eb9a1 100644
--- a/facil.io/build.zig
+++ b/facil.io/build.zig
@@ -2,11 +2,11 @@ const std = @import("std");
 
 pub fn build_facilio(
     comptime subdir: []const u8,
-    b: *std.build.Builder,
-    target: std.zig.CrossTarget,
+    b: *std.Build,
+    target: std.Build.ResolvedTarget,
     optimize: std.builtin.OptimizeMode,
     use_openssl: bool,
-) !*std.build.CompileStep {
+) !*std.Build.Step.Compile {
     const lib = b.addStaticLibrary(.{
         .name = "facil.io",
         .target = target,
@@ -15,7 +15,7 @@ pub fn build_facilio(
 
     // Generate flags
     var flags = std.ArrayList([]const u8).init(std.heap.page_allocator);
-    if (lib.optimize != .Debug) try flags.append("-Os");
+    if (optimize != .Debug) try flags.append("-Os");
     try flags.append("-Wno-return-type-c-linkage");
     try flags.append("-fno-sanitize=undefined");
 
@@ -26,7 +26,7 @@ pub fn build_facilio(
     //
 
     try flags.append("-DFIO_HTTP_EXACT_LOGGING");
-    if (target.getAbi() == .musl)
+    if (target.result.abi == .musl)
         try flags.append("-D_LARGEFILE64_SOURCE");
     if (use_openssl)
         try flags.append("-DHAVE_OPENSSL -DFIO_TLS_FOUND");
@@ -42,30 +42,36 @@ pub fn build_facilio(
         lib.addIncludePath(.{ .path = subdir ++ "/lib/facil/tls" });
 
     // C source files
-    lib.addCSourceFiles(&.{
-        subdir ++ "/lib/facil/fio.c",
-        subdir ++ "/lib/facil/fio_zig.c",
-        subdir ++ "/lib/facil/http/http.c",
-        subdir ++ "/lib/facil/http/http1.c",
-        subdir ++ "/lib/facil/http/websockets.c",
-        subdir ++ "/lib/facil/http/http_internal.c",
-        subdir ++ "/lib/facil/fiobj/fiobj_numbers.c",
-        subdir ++ "/lib/facil/fiobj/fio_siphash.c",
-        subdir ++ "/lib/facil/fiobj/fiobj_str.c",
-        subdir ++ "/lib/facil/fiobj/fiobj_ary.c",
-        subdir ++ "/lib/facil/fiobj/fiobj_data.c",
-        subdir ++ "/lib/facil/fiobj/fiobj_hash.c",
-        subdir ++ "/lib/facil/fiobj/fiobj_json.c",
-        subdir ++ "/lib/facil/fiobj/fiobject.c",
-        subdir ++ "/lib/facil/fiobj/fiobj_mustache.c",
-        subdir ++ "/lib/facil/cli/fio_cli.c",
-    }, flags.items);
+    lib.addCSourceFiles(.{
+        .files = &.{
+            subdir ++ "/lib/facil/fio.c",
+            subdir ++ "/lib/facil/fio_zig.c",
+            subdir ++ "/lib/facil/http/http.c",
+            subdir ++ "/lib/facil/http/http1.c",
+            subdir ++ "/lib/facil/http/websockets.c",
+            subdir ++ "/lib/facil/http/http_internal.c",
+            subdir ++ "/lib/facil/fiobj/fiobj_numbers.c",
+            subdir ++ "/lib/facil/fiobj/fio_siphash.c",
+            subdir ++ "/lib/facil/fiobj/fiobj_str.c",
+            subdir ++ "/lib/facil/fiobj/fiobj_ary.c",
+            subdir ++ "/lib/facil/fiobj/fiobj_data.c",
+            subdir ++ "/lib/facil/fiobj/fiobj_hash.c",
+            subdir ++ "/lib/facil/fiobj/fiobj_json.c",
+            subdir ++ "/lib/facil/fiobj/fiobject.c",
+            subdir ++ "/lib/facil/fiobj/fiobj_mustache.c",
+            subdir ++ "/lib/facil/cli/fio_cli.c",
+        },
+        .flags = flags.items,
+    });
 
     if (use_openssl) {
-        lib.addCSourceFiles(&.{
-            subdir ++ "/lib/facil/tls/fio_tls_openssl.c",
-            subdir ++ "/lib/facil/tls/fio_tls_missing.c",
-        }, flags.items);
+        lib.addCSourceFiles(.{
+            .files = &.{
+                subdir ++ "/lib/facil/tls/fio_tls_openssl.c",
+                subdir ++ "/lib/facil/tls/fio_tls_missing.c",
+            },
+            .flags = flags.items,
+        });
     }
 
     // link against libc
diff --git a/facil.io/build.zig.zon b/facil.io/build.zig.zon
index 277ebf3f..3ed7ce9a 100644
--- a/facil.io/build.zig.zon
+++ b/facil.io/build.zig.zon
@@ -2,4 +2,3 @@
     .name = "facil.io",
     .version = "0.0.12",
 }
-
diff --git a/flake.lock b/flake.lock
index 5c8c63d0..ffba2365 100644
--- a/flake.lock
+++ b/flake.lock
@@ -3,11 +3,11 @@
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1673956053,
-        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
         "type": "github"
       },
       "original": {
@@ -37,11 +37,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1689068808,
-        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
         "type": "github"
       },
       "original": {
@@ -55,11 +55,11 @@
         "systems": "systems_2"
       },
       "locked": {
-        "lastModified": 1685518550,
-        "narHash": "sha256-o2d0KcvaXzTrPRIo0kOLV0/QXHhDQ5DTi+OxcjO8xqY=",
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "a1720a10a6cfe8234c0e93907ffe81be440f4cef",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
         "type": "github"
       },
       "original": {
@@ -92,11 +92,11 @@
       },
       "locked": {
         "dir": "contrib",
-        "lastModified": 1692702614,
-        "narHash": "sha256-FeY8hAB77tnUTDbK6WYA+DG3Nx5xQrbOC17Cfl3pTm4=",
+        "lastModified": 1704461694,
+        "narHash": "sha256-dQc9Bkh5uf0R4po3NWnCGx+3eqOZR7iSR4jmRvNNm+E=",
         "owner": "neovim",
         "repo": "neovim",
-        "rev": "014b87646fc3273a09d6b20ebb648a8eb24a0a98",
+        "rev": "c509f4907bf7405c9c2ae3f7eff76c5d552944cc",
         "type": "github"
       },
       "original": {
@@ -108,11 +108,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1702882221,
-        "narHash": "sha256-L/uOrBqkGsa45EvQk4DLq/aR6JeomW+7Mwe0mC/dVUM=",
+        "lastModified": 1704290814,
+        "narHash": "sha256-LWvKHp7kGxk/GEtlrGYV68qIvPHkU9iToomNFGagixU=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "25fef6e30d8ad48f47a8411ccfe986d8baed8a15",
+        "rev": "70bdadeb94ffc8806c0570eb5c2695ad29f0e421",
         "type": "github"
       },
       "original": {
@@ -124,16 +124,16 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1689088367,
-        "narHash": "sha256-Y2tl2TlKCWEHrOeM9ivjCLlRAKH3qoPUE/emhZECU14=",
+        "lastModified": 1702350026,
+        "narHash": "sha256-A+GNZFZdfl4JdDphYKBJ5Ef1HOiFsP18vQe9mqjmUis=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5c9ddb86679c400d6b7360797b8a22167c2053f8",
+        "rev": "9463103069725474698139ab10f17a9d125da859",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "release-23.05",
+        "ref": "nixos-23.05",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -184,11 +184,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1692663634,
-        "narHash": "sha256-wioqr80UOA0tNXaJy4D0i9fFaLG2RoQi5e9Dpd4WojE=",
+        "lastModified": 1704888534,
+        "narHash": "sha256-douEXUiWCVL9NvWKYBc8ydq51qLLUwlBo6lJJoktkGw=",
         "owner": "mitchellh",
         "repo": "zig-overlay",
-        "rev": "d666e5137fe0c43353c555fb47748813084decab",
+        "rev": "c69295c92a98947295755a9ac2d49a8d447cc04d",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 58583f4e..dd04c651 100644
--- a/flake.nix
+++ b/flake.nix
@@ -90,6 +90,7 @@
         devShells.build = pkgs.mkShell {
           nativeBuildInputs = with pkgs; [
             zigpkgs."0.11.0"
+            pkgs.openssl
           ];
 
           buildInputs = with pkgs; [
@@ -103,6 +104,28 @@
             # once we set SHELL to point to the interactive bash, neovim will 
             # launch the correct $SHELL in its :terminal 
             export SHELL=${pkgs.bashInteractive}/bin/bash
+            export LD_LIBRARY_PATH=${pkgs.zlib.out}/lib:${pkgs.icu.out}/lib:${pkgs.openssl.out}/lib:$LD_LIBRARY_PATH
+          '';
+        };
+
+        devShells.masta = pkgs.mkShell {
+          nativeBuildInputs = with pkgs; [
+            zigpkgs.master
+            pkgs.openssl
+          ];
+
+          buildInputs = with pkgs; [
+            # we need a version of bash capable of being interactive
+            # as opposed to a bash just used for building this flake 
+            # in non-interactive mode
+            bashInteractive 
+          ];
+
+          shellHook = ''
+            # once we set SHELL to point to the interactive bash, neovim will 
+            # launch the correct $SHELL in its :terminal 
+            export SHELL=${pkgs.bashInteractive}/bin/bash
+            export LD_LIBRARY_PATH=${pkgs.zlib.out}/lib:${pkgs.icu.out}/lib:${pkgs.openssl.out}/lib:$LD_LIBRARY_PATH
           '';
         };
 
diff --git a/src/endpoint.zig b/src/endpoint.zig
index c4ba86bf..07cecc95 100644
--- a/src/endpoint.zig
+++ b/src/endpoint.zig
@@ -112,7 +112,7 @@ pub fn Authenticating(comptime Authenticator: type) type {
         /// GET: here, the auth_endpoint will be passed in as endpoint.
         /// Authenticates GET requests using the Authenticator.
         pub fn get(e: *Endpoint, r: zap.Request) void {
-            const authEp: *Self = @fieldParentPtr(Self, "auth_endpoint", e);
+            const authEp: *Self = @fieldParentPtr("auth_endpoint", e);
             switch (authEp.authenticator.authenticateRequest(&r)) {
                 .AuthFailed => {
                     if (e.settings.unauthorized) |unauthorized| {
@@ -132,7 +132,7 @@ pub fn Authenticating(comptime Authenticator: type) type {
         /// POST: here, the auth_endpoint will be passed in as endpoint.
         /// Authenticates POST requests using the Authenticator.
         pub fn post(e: *Endpoint, r: zap.Request) void {
-            const authEp: *Self = @fieldParentPtr(Self, "auth_endpoint", e);
+            const authEp: *Self = @fieldParentPtr("auth_endpoint", e);
             switch (authEp.authenticator.authenticateRequest(&r)) {
                 .AuthFailed => {
                     if (e.settings.unauthorized) |unauthorized| {
@@ -152,7 +152,7 @@ pub fn Authenticating(comptime Authenticator: type) type {
         /// PUT: here, the auth_endpoint will be passed in as endpoint.
         /// Authenticates PUT requests using the Authenticator.
         pub fn put(e: *Endpoint, r: zap.Request) void {
-            const authEp: *Self = @fieldParentPtr(Self, "auth_endpoint", e);
+            const authEp: *Self = @fieldParentPtr("auth_endpoint", e);
             switch (authEp.authenticator.authenticateRequest(&r)) {
                 .AuthFailed => {
                     if (e.settings.unauthorized) |unauthorized| {
@@ -172,7 +172,7 @@ pub fn Authenticating(comptime Authenticator: type) type {
         /// DELETE: here, the auth_endpoint will be passed in as endpoint.
         /// Authenticates DELETE requests using the Authenticator.
         pub fn delete(e: *Endpoint, r: zap.Request) void {
-            const authEp: *Self = @fieldParentPtr(Self, "auth_endpoint", e);
+            const authEp: *Self = @fieldParentPtr("auth_endpoint", e);
             switch (authEp.authenticator.authenticateRequest(&r)) {
                 .AuthFailed => {
                     if (e.settings.unauthorized) |unauthorized| {
@@ -192,7 +192,7 @@ pub fn Authenticating(comptime Authenticator: type) type {
         /// PATCH: here, the auth_endpoint will be passed in as endpoint.
         /// Authenticates PATCH requests using the Authenticator.
         pub fn patch(e: *Endpoint, r: zap.Request) void {
-            const authEp: *Self = @fieldParentPtr(Self, "auth_endpoint", e);
+            const authEp: *Self = @fieldParentPtr("auth_endpoint", e);
             switch (authEp.authenticator.authenticateRequest(&r)) {
                 .AuthFailed => {
                     if (e.settings.unauthorized) |unauthorized| {
@@ -212,7 +212,7 @@ pub fn Authenticating(comptime Authenticator: type) type {
         /// OPTIONS: here, the auth_endpoint will be passed in as endpoint.
         /// Authenticates OPTIONS requests using the Authenticator.
         pub fn options(e: *Endpoint, r: zap.Request) void {
-            const authEp: *Self = @fieldParentPtr(Self, "auth_endpoint", e);
+            const authEp: *Self = @fieldParentPtr("auth_endpoint", e);
             switch (authEp.authenticator.authenticateRequest(&r)) {
                 .AuthFailed => {
                     if (e.settings.unauthorized) |unauthorized| {
diff --git a/src/fio.zig b/src/fio.zig
index a71ff6ce..31e94964 100644
--- a/src/fio.zig
+++ b/src/fio.zig
@@ -118,10 +118,10 @@ pub const struct_fio_str_info_s = extern struct {
 pub const fio_str_info_s = struct_fio_str_info_s;
 pub extern fn http_send_body(h: [*c]http_s, data: ?*anyopaque, length: usize) c_int;
 pub fn fiobj_each1(arg_o: FIOBJ, arg_start_at: usize, arg_task: ?*const fn (FIOBJ, ?*anyopaque) callconv(.C) c_int, arg_arg: ?*anyopaque) callconv(.C) usize {
-    var o = arg_o;
-    var start_at = arg_start_at;
-    var task = arg_task;
-    var arg = arg_arg;
+    const o = arg_o;
+    const start_at = arg_start_at;
+    const task = arg_task;
+    const arg = arg_arg;
     if ((((o != 0) and ((o & @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 1))))) == @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 0)))))) and ((o & @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 6))))) != @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 6)))))) and (fiobj_type_vtable(o).*.each != null)) return fiobj_type_vtable(o).*.each.?(o, start_at, task, arg);
     return 0;
 }
@@ -288,8 +288,8 @@ pub const fiobj_object_header_s = extern struct {
     ref: u32,
 };
 pub fn fiobj_type_is(arg_o: FIOBJ, arg_type: fiobj_type_enum) callconv(.C) usize {
-    var o = arg_o;
-    var @"type" = arg_type;
+    const o = arg_o;
+    const @"type" = arg_type;
     while (true) {
         switch (@as(c_int, @bitCast(@as(c_uint, @"type")))) {
             @as(c_int, 1) => return @as(usize, @bitCast(@as(c_long, @intFromBool(((o & @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 1))))) != 0) or (@as(c_int, @bitCast(@as(c_uint, @as([*c]fiobj_type_enum, @ptrFromInt(o))[@as(c_uint, @intCast(@as(c_int, 0)))]))) == FIOBJ_T_NUMBER))))),
@@ -311,7 +311,7 @@ pub fn fiobj_type_is(arg_o: FIOBJ, arg_type: fiobj_type_enum) callconv(.C) usize
     return @as(usize, @bitCast(@as(c_long, @intFromBool((((o != 0) and ((o & @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 1))))) == @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 0)))))) and ((o & @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 6))))) != @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 6)))))) and (@as(c_int, @bitCast(@as(c_uint, @as([*c]fiobj_type_enum, @ptrCast(@alignCast(@as(?*anyopaque, @ptrFromInt(o & ~@as(usize, @bitCast(@as(c_long, @as(c_int, 7)))))))))[@as(c_uint, @intCast(@as(c_int, 0)))]))) == @as(c_int, @bitCast(@as(c_uint, @"type"))))))));
 }
 pub fn fiobj_type(arg_o: FIOBJ) callconv(.C) fiobj_type_enum {
-    var o = arg_o;
+    const o = arg_o;
     if (!(o != 0)) return @as(u8, @bitCast(@as(i8, @truncate(FIOBJ_T_NULL))));
     if ((o & @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 1))))) != 0) return @as(u8, @bitCast(@as(i8, @truncate(FIOBJ_T_NUMBER))));
     if ((o & @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 6))))) == @as(c_ulong, @bitCast(@as(c_long, @as(c_int, 6))))) return @as(u8, @bitCast(@as(u8, @truncate(o))));
@@ -326,7 +326,7 @@ pub extern const FIOBJECT_VTABLE_ARRAY: fiobj_object_vtable_s;
 pub extern const FIOBJECT_VTABLE_HASH: fiobj_object_vtable_s;
 pub extern const FIOBJECT_VTABLE_DATA: fiobj_object_vtable_s;
 pub fn fiobj_type_vtable(arg_o: FIOBJ) callconv(.C) [*c]const fiobj_object_vtable_s {
-    var o = arg_o;
+    const o = arg_o;
     while (true) {
         switch (@as(c_int, @bitCast(@as(c_uint, fiobj_type(o))))) {
             @as(c_int, 1) => return &FIOBJECT_VTABLE_NUMBER,
@@ -361,7 +361,7 @@ pub fn fiobj_obj2float(o: FIOBJ) callconv(.C) f64 {
 pub extern fn fio_ltocstr(c_long) fio_str_info_s;
 pub fn fiobj_obj2cstr(o: FIOBJ) callconv(.C) fio_str_info_s {
     if (!(o != 0)) {
-        var ret: fio_str_info_s = fio_str_info_s{
+        const ret: fio_str_info_s = fio_str_info_s{
             .capa = @as(usize, @bitCast(@as(c_long, @as(c_int, 0)))),
             .len = @as(usize, @bitCast(@as(c_long, @as(c_int, 4)))),
             .data = @as([*c]u8, @ptrFromInt(@intFromPtr("null"))),
@@ -374,7 +374,7 @@ pub fn fiobj_obj2cstr(o: FIOBJ) callconv(.C) fio_str_info_s {
             switch (@as(c_int, @bitCast(@as(c_uint, @as(u8, @bitCast(@as(u8, @truncate(o)))))))) {
                 @as(c_int, 6) => {
                     {
-                        var ret: fio_str_info_s = fio_str_info_s{
+                        const ret: fio_str_info_s = fio_str_info_s{
                             .capa = @as(usize, @bitCast(@as(c_long, @as(c_int, 0)))),
                             .len = @as(usize, @bitCast(@as(c_long, @as(c_int, 4)))),
                             .data = @as([*c]u8, @ptrFromInt(@intFromPtr("null"))),
@@ -384,7 +384,7 @@ pub fn fiobj_obj2cstr(o: FIOBJ) callconv(.C) fio_str_info_s {
                 },
                 @as(c_int, 38) => {
                     {
-                        var ret: fio_str_info_s = fio_str_info_s{
+                        const ret: fio_str_info_s = fio_str_info_s{
                             .capa = @as(usize, @bitCast(@as(c_long, @as(c_int, 0)))),
                             .len = @as(usize, @bitCast(@as(c_long, @as(c_int, 5)))),
                             .data = @as([*c]u8, @ptrFromInt(@intFromPtr("false"))),
@@ -394,7 +394,7 @@ pub fn fiobj_obj2cstr(o: FIOBJ) callconv(.C) fio_str_info_s {
                 },
                 @as(c_int, 22) => {
                     {
-                        var ret: fio_str_info_s = fio_str_info_s{
+                        const ret: fio_str_info_s = fio_str_info_s{
                             .capa = @as(usize, @bitCast(@as(c_long, @as(c_int, 0)))),
                             .len = @as(usize, @bitCast(@as(c_long, @as(c_int, 4)))),
                             .data = @as([*c]u8, @ptrFromInt(@intFromPtr("true"))),
@@ -556,8 +556,8 @@ pub extern fn http_date2rfc7231(target: [*c]u8, tmbuf: [*c]struct_tm) usize;
 pub extern fn http_date2rfc2109(target: [*c]u8, tmbuf: [*c]struct_tm) usize;
 pub extern fn http_date2rfc2822(target: [*c]u8, tmbuf: [*c]struct_tm) usize;
 pub fn http_date2str(arg_target: [*c]u8, arg_tmbuf: [*c]struct_tm) callconv(.C) usize {
-    var target = arg_target;
-    var tmbuf = arg_tmbuf;
+    const target = arg_target;
+    const tmbuf = arg_tmbuf;
     return http_date2rfc7231(target, tmbuf);
 }
 pub extern fn http_time2str(target: [*c]u8, t: time_t) usize;
diff --git a/src/http_auth.zig b/src/http_auth.zig
index e8a7ad21..6cba1f68 100644
--- a/src/http_auth.zig
+++ b/src/http_auth.zig
@@ -122,7 +122,7 @@ pub fn Basic(comptime Lookup: type, comptime kind: BasicAuthStrategy) type {
                     );
                     return .AuthFailed;
                 }
-                var decoded = buffer[0..decoded_size];
+                const decoded = buffer[0..decoded_size];
                 decoder.decode(decoded, encoded) catch |err| {
                     zap.debug(
                         "ERROR: UserPassAuth: unable to decode `{s}`: {any}\n",
@@ -400,7 +400,7 @@ pub fn UserPassSession(comptime Lookup: type, comptime lockedPwLookups: bool) ty
             lookup: *Lookup,
             args: UserPassSessionArgs,
         ) !Self {
-            var ret: Self = .{
+            const ret: Self = .{
                 .allocator = allocator,
                 .settings = .{
                     .usernameParam = try allocator.dupe(u8, args.usernameParam),
diff --git a/src/middleware.zig b/src/middleware.zig
index 8862c1ce..91b3da36 100644
--- a/src/middleware.zig
+++ b/src/middleware.zig
@@ -82,7 +82,7 @@ pub fn EndpointHandler(comptime HandlerType: anytype, comptime ContextType: anyt
         /// If `breakOnFinish` is `true`, the handler will stop handing requests down the chain if
         /// the endpoint processed the request.
         pub fn onRequest(handler: *HandlerType, r: zap.Request, context: *ContextType) bool {
-            var self = @fieldParentPtr(Self, "handler", handler);
+            const self: *Self = @fieldParentPtr("handler", handler);
             r.setUserContext(context);
             self.endpoint.onRequest(r);
 
diff --git a/src/tests/test_auth.zig b/src/tests/test_auth.zig
index 5e5f2625..f7c20aa0 100644
--- a/src/tests/test_auth.zig
+++ b/src/tests/test_auth.zig
@@ -146,10 +146,10 @@ fn makeRequest(a: std.mem.Allocator, url: []const u8, auth: ?ClientAuthReqHeader
     var http_client: std.http.Client = .{ .allocator = a };
     defer http_client.deinit();
 
-    var req = try http_client.request(.GET, uri, h, .{});
+    var req = try http_client.open(.GET, uri, h, .{});
     defer req.deinit();
 
-    try req.start();
+    try req.send(.{});
     try req.wait();
     // req.deinit() panics!
     // defer req.deinit();
diff --git a/src/tests/test_http_params.zig b/src/tests/test_http_params.zig
index 45ffc7de..532c9456 100644
--- a/src/tests/test_http_params.zig
+++ b/src/tests/test_http_params.zig
@@ -10,10 +10,10 @@ fn makeRequest(a: std.mem.Allocator, url: []const u8) !void {
     var http_client: std.http.Client = .{ .allocator = a };
     defer http_client.deinit();
 
-    var req = try http_client.request(.GET, uri, h, .{});
+    var req = try http_client.open(.GET, uri, h, .{});
     defer req.deinit();
 
-    try req.start();
+    try req.send(.{});
     try req.wait();
     zap.stop();
 }
@@ -23,7 +23,7 @@ fn makeRequestThread(a: std.mem.Allocator, url: []const u8) !std.Thread {
 }
 
 test "http parameters" {
-    var allocator = std.testing.allocator;
+    const allocator = std.testing.allocator;
 
     const Handler = struct {
         var alloc: std.mem.Allocator = undefined;
diff --git a/src/tests/test_sendfile.zig b/src/tests/test_sendfile.zig
index 51064cf3..d3686961 100644
--- a/src/tests/test_sendfile.zig
+++ b/src/tests/test_sendfile.zig
@@ -15,10 +15,10 @@ fn makeRequest(a: std.mem.Allocator, url: []const u8) !void {
     var http_client: std.http.Client = .{ .allocator = a };
     defer http_client.deinit();
 
-    var req = try http_client.request(.GET, uri, h, .{});
+    var req = try http_client.open(.GET, uri, h, .{});
     defer req.deinit();
 
-    try req.start();
+    try req.send(.{});
     try req.wait();
     read_len = try req.readAll(&buffer);
 
@@ -33,7 +33,7 @@ pub fn on_request(r: zap.Request) void {
 }
 
 test "send file" {
-    var allocator = std.testing.allocator;
+    const allocator = std.testing.allocator;
 
     // setup listener
     var listener = zap.HttpListener.init(
diff --git a/src/websockets.zig b/src/websockets.zig
index 0e462700..772a2893 100644
--- a/src/websockets.zig
+++ b/src/websockets.zig
@@ -50,7 +50,7 @@ pub fn Handler(comptime ContextType: type) type {
 
         /// This function will end the HTTP stage of the connection and attempt to "upgrade" to a WebSockets connection.
         pub fn upgrade(h: [*c]fio.http_s, settings: *WebSocketSettings) WebSocketError!void {
-            var fio_settings: fio.websocket_settings_s = .{
+            const fio_settings: fio.websocket_settings_s = .{
                 .on_message = internal_on_message,
                 .on_open = internal_on_open,
                 .on_ready = internal_on_ready,
@@ -64,8 +64,8 @@ pub fn Handler(comptime ContextType: type) type {
         }
 
         fn internal_on_message(handle: WsHandle, msg: fio.fio_str_info_s, is_text: u8) callconv(.C) void {
-            var user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(fio.websocket_udata_get(handle))));
-            var message = msg.data[0..msg.len];
+            const user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(fio.websocket_udata_get(handle))));
+            const message = msg.data[0..msg.len];
             if (user_provided_settings) |settings| {
                 if (settings.on_message) |on_message| {
                     on_message(settings.context, handle, message, is_text == 1);
@@ -74,7 +74,7 @@ pub fn Handler(comptime ContextType: type) type {
         }
 
         fn internal_on_open(handle: WsHandle) callconv(.C) void {
-            var user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(fio.websocket_udata_get(handle))));
+            const user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(fio.websocket_udata_get(handle))));
             if (user_provided_settings) |settings| {
                 if (settings.on_open) |on_open| {
                     on_open(settings.context, handle);
@@ -83,7 +83,7 @@ pub fn Handler(comptime ContextType: type) type {
         }
 
         fn internal_on_ready(handle: WsHandle) callconv(.C) void {
-            var user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(fio.websocket_udata_get(handle))));
+            const user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(fio.websocket_udata_get(handle))));
             if (user_provided_settings) |settings| {
                 if (settings.on_ready) |on_ready| {
                     on_ready(settings.context, handle);
@@ -92,7 +92,7 @@ pub fn Handler(comptime ContextType: type) type {
         }
 
         fn internal_on_shutdown(handle: WsHandle) callconv(.C) void {
-            var user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(fio.websocket_udata_get(handle))));
+            const user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(fio.websocket_udata_get(handle))));
             if (user_provided_settings) |settings| {
                 if (settings.on_shutdown) |on_shutdown| {
                     on_shutdown(settings.context, handle);
@@ -101,7 +101,7 @@ pub fn Handler(comptime ContextType: type) type {
         }
 
         fn internal_on_close(uuid: isize, udata: ?*anyopaque) callconv(.C) void {
-            var user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(udata)));
+            const user_provided_settings: ?*WebSocketSettings = @as(?*WebSocketSettings, @ptrCast(@alignCast(udata)));
             if (user_provided_settings) |settings| {
                 if (settings.on_close) |on_close| {
                     on_close(settings.context, uuid);
@@ -119,7 +119,7 @@ pub fn Handler(comptime ContextType: type) type {
         pub inline fn write(handle: WsHandle, message: []const u8, is_text: bool) WebSocketError!void {
             if (fio.websocket_write(
                 handle,
-                fio.str2fio(message),
+                util.str2fio(message),
                 if (is_text) 1 else 0,
             ) != 0) {
                 return error.WriteError;
@@ -192,7 +192,7 @@ pub fn Handler(comptime ContextType: type) type {
         /// we need it to look up the ziggified callbacks.
         pub inline fn subscribe(handle: WsHandle, args: *SubscribeArgs) WebSocketError!usize {
             if (handle == null) return error.SubscribeError;
-            var fio_args: fio.websocket_subscribe_s_zigcompat = .{
+            const fio_args: fio.websocket_subscribe_s_zigcompat = .{
                 .ws = handle.?,
                 .channel = util.str2fio(args.channel),
                 .on_message = if (args.on_message) |_| internal_subscription_on_message else null,
diff --git a/src/zap.zig b/src/zap.zig
index 0414d68c..b8ab2895 100644
--- a/src/zap.zig
+++ b/src/zap.zig
@@ -43,7 +43,7 @@ pub const Tls = @import("tls.zig");
 ///     }
 ///
 ///     fn get(e: *zap.Endpoint, r: zap.Request) void {
-///         const self: *StopEndpoint = @fieldParentPtr(StopEndpoint, "ep", e);
+///         const self: *StopEndpoint = @fieldParentPtr("ep", e);
 ///         _ = self;
 ///         _ = r;
 ///         zap.stop();
diff --git a/tools/announceybot.zig b/tools/announceybot.zig
index 6dbef9df..3a88deb7 100644
--- a/tools/announceybot.zig
+++ b/tools/announceybot.zig
@@ -28,7 +28,8 @@ fn usage() void {
         \\                   instructions
     ;
     std.debug.print("{s}", .{message});
-    std.os.exit(1);
+
+    std.process.exit(1);
 }
 
 var general_purpose_allocator = std.heap.GeneralPurposeAllocator(.{}){};
@@ -88,7 +89,7 @@ fn get_tag_annotation(allocator: std.mem.Allocator, tagname: []const u8) ![]cons
         tagname,
     };
 
-    const result = try std.ChildProcess.exec(.{
+    const result = try std.ChildProcess.run(.{
         .allocator = allocator,
         .argv = &args,
     });
@@ -150,24 +151,26 @@ fn sendToDiscordPart(allocator: std.mem.Allocator, url: []const u8, message_json
     // url
     const uri = try std.Uri.parse(url);
 
-    // http headers
-    var h = std.http.Headers{ .allocator = allocator };
-    defer h.deinit();
-    try h.append("accept", "*/*");
-    try h.append("Content-Type", "application/json");
-
     // client
     var http_client: std.http.Client = .{ .allocator = allocator };
     defer http_client.deinit();
 
+    var server_header_buffer: [2048]u8 = undefined;
+
     // request
-    var req = try http_client.request(.POST, uri, h, .{});
+    var req = try http_client.open(.POST, uri, .{
+        .server_header_buffer = &server_header_buffer, 
+        .extra_headers = &.{
+            .{ .name = "accept", .value = "*/*" },
+            .{ .name = "Content-Type", .value = "application/json" },
+        },
+    });
     defer req.deinit();
 
     req.transfer_encoding = .chunked;
 
     // connect, send request
-    try req.start();
+    try req.send();
 
     // send POST payload
     try req.writer().writeAll(message_json);
@@ -182,7 +185,7 @@ fn sendToDiscordPart(allocator: std.mem.Allocator, url: []const u8, message_json
 fn sendToDiscord(allocator: std.mem.Allocator, url: []const u8, message: []const u8) !void {
     // json payload
     // max size: 100kB
-    var buf: []u8 = try allocator.alloc(u8, 100 * 1024);
+    const buf: []u8 = try allocator.alloc(u8, 100 * 1024);
     defer allocator.free(buf);
     var fba = std.heap.FixedBufferAllocator.init(buf);
     var string = std.ArrayList(u8).init(fba.allocator());
@@ -336,7 +339,7 @@ fn command_announce(allocator: std.mem.Allocator, tag: []const u8) !void {
     defer allocator.free(url);
     sendToDiscord(allocator, url, announcement) catch |err| {
         std.debug.print("HTTP ERROR: {any}\n", .{err});
-        std.os.exit(1);
+        std.process.exit(1);
     };
 }
 
@@ -399,7 +402,7 @@ fn command_update_readme(allocator: std.mem.Allocator, tag: []const u8) !void {
         // we need to put the \n back in.
         // TODO: change this by using some "search" iterator that just
         // returns indices etc
-        var output_line = try std.fmt.allocPrint(allocator, "{s}\n", .{line});
+        const output_line = try std.fmt.allocPrint(allocator, "{s}\n", .{line});
         defer allocator.free(output_line);
         _ = try writer.write(output_line);
     }
diff --git a/tools/announceybot/release-announcement-template.md b/tools/announceybot/release-announcement-template.md
index 2275105e..b06d4f25 100644
--- a/tools/announceybot/release-announcement-template.md
+++ b/tools/announceybot/release-announcement-template.md
@@ -18,7 +18,10 @@ Modify your `build.zig.zon` like this:
         .zap = .{
             .url = "https://github.com/zigzap/zap/archive/refs/tags/{tag}.tar.gz",
             .hash = "{hash}",
-        }
+        },
+        .paths = .{
+            "",
+        },
     }
 }
 
diff --git a/tools/announceybot/release-dep-update-template.md b/tools/announceybot/release-dep-update-template.md
index b56ee3a5..de5c4c07 100644
--- a/tools/announceybot/release-dep-update-template.md
+++ b/tools/announceybot/release-dep-update-template.md
@@ -6,9 +6,14 @@
     .dependencies = .{
         // zap {tag}
         .zap = .{
-            .url = "https://github.com/zigzap/zap/archive/refs/tags/{tag}.tar.gz",
+            // when tagged:
+            // .url = "https://github.com/zigzap/zap/archive/refs/tags/{tag}.tar.gz",
+            .url = "https://github.com/zigzap/zap/archive/{tag}.tar.gz",
             .hash = "{hash}",
-        }
+        },
+        .paths = .{
+            "",
+        },
     }
 }
 ```
diff --git a/tools/announceybot/release-note-template.md b/tools/announceybot/release-note-template.md
index 9b47e863..c0daba3b 100644
--- a/tools/announceybot/release-note-template.md
+++ b/tools/announceybot/release-note-template.md
@@ -28,7 +28,10 @@ Here is a complete `build.zig.zon` example:
         .zap = .{
             .url = "https://github.com/zigzap/zap/archive/refs/tags/{tag}.tar.gz",
             .hash = "{hash}",
-        }
+        },
+        .paths = .{
+            "",
+        },
     }
 }
 
@@ -41,7 +44,8 @@ Then, in your `build.zig`'s `build` function, add the following before
     const zap = b.dependency("zap", .{
         .target = target,
         .optimize = optimize,
+        .openssl = false, // set to true to enable TLS support
     });
-    exe.addModule("zap", zap.module("zap"));
+    exe.root_module.addImport("zap", zap.module("zap"));
     exe.linkLibrary(zap.artifact("facil.io"));
 ```
diff --git a/tools/docserver.zig b/tools/docserver.zig
new file mode 100644
index 00000000..85b51673
--- /dev/null
+++ b/tools/docserver.zig
@@ -0,0 +1,44 @@
+const std = @import("std");
+const zap = @import("zap");
+
+fn on_request(r: zap.Request) void {
+    r.setStatus(.not_found);
+    r.sendBody("<html><body><h1>404 - File not found</h1></body></html>") catch return;
+}
+
+pub fn main() !void {
+    var args_it = std.process.args();
+    var port: usize = 8080;
+    var docs_dir: []const u8 = "zig-out/docs";
+
+    while (args_it.next()) |arg| {
+        if (std.mem.startsWith(u8, arg, "--port=")) {
+            // try to parse port
+            if (std.fmt.parseUnsigned(usize, arg[7..], 0)) |the_port| {
+                port = the_port;
+            } else |_| {
+                std.debug.print("Invalid port number. Using default port {}\n", .{port});
+            }
+        }
+
+        if (std.mem.startsWith(u8, arg, "--docs=")) {
+            docs_dir = arg[7..];
+        }
+    }
+
+    var listener = zap.HttpListener.init(.{
+        .port = port,
+        .on_request = on_request,
+        .public_folder = docs_dir,
+        .log = true,
+    });
+    try listener.listen();
+
+    std.debug.print("\nServing docs from {s} at 0.0.0.0:{}\n", .{ docs_dir, port });
+
+    // start worker threads
+    zap.start(.{
+        .threads = 2,
+        .workers = 1,
+    });
+}
diff --git a/tools/pkghash.zig b/tools/pkghash.zig
index f3997fc6..805206aa 100644
--- a/tools/pkghash.zig
+++ b/tools/pkghash.zig
@@ -71,7 +71,7 @@ pub const usage_pkg =
 ;
 
 pub fn gitLatestTag(gpa: Allocator, pkg_dir: []const u8) ![]const u8 {
-    const result = try std.ChildProcess.exec(.{
+    const result = try std.ChildProcess.run(.{
         .allocator = gpa,
         .argv = &.{
             "git",
@@ -97,7 +97,7 @@ pub fn gitLatestTag(gpa: Allocator, pkg_dir: []const u8) ![]const u8 {
 }
 
 pub fn gitFileList(gpa: Allocator, pkg_dir: []const u8) ![]const u8 {
-    const result = try std.ChildProcess.exec(.{
+    const result = try std.ChildProcess.run(.{
         .allocator = gpa,
         .argv = &.{
             "git",
@@ -266,8 +266,8 @@ pub fn cmdPkg(gpa: Allocator, arena: Allocator, args: []const []const u8) !void
 
         // computePackageHash will close the directory after completion
         // std.debug.print("abspath: {s}\n", .{cwd_absolute_path});
-        var cwd_copy = try fs.openIterableDirAbsolute(cwd_absolute_path, .{});
-        errdefer cwd_copy.dir.close();
+        var cwd_copy = try fs.openDirAbsolute(cwd_absolute_path, .{});
+        errdefer cwd_copy.close();
 
         var thread_pool: ThreadPool = undefined;
         try thread_pool.init(.{ .allocator = gpa });
@@ -281,7 +281,7 @@ pub fn cmdPkg(gpa: Allocator, arena: Allocator, args: []const []const u8) !void
         };
         break :blk try computePackageHashExcludingDirectories(
             &thread_pool,
-            .{ .dir = cwd_copy.dir },
+            cwd_copy,
             excluded_directories,
         );
     };
@@ -355,7 +355,7 @@ fn isExecutable(file: fs.File) !bool {
 
 pub fn computePackageHashExcludingDirectories(
     thread_pool: *ThreadPool,
-    pkg_dir: fs.IterableDir,
+    pkg_dir: fs.Dir,
     excluded_directories: []const []const u8,
 ) ![Manifest.Hash.digest_length]u8 {
     const gpa = thread_pool.allocator;
@@ -405,7 +405,7 @@ pub fn computePackageHashExcludingDirectories(
                 .failure = undefined, // to be populated by the worker
             };
             wait_group.start();
-            try thread_pool.spawn(workerHashFile, .{ pkg_dir.dir, hashed_file, &wait_group });
+            try thread_pool.spawn(workerHashFile, .{ pkg_dir, hashed_file, &wait_group });
 
             try all_files.append(hashed_file);
         }
diff --git a/wrk/zigstd/main.zig b/wrk/zigstd/main.zig
index 30e0636d..45f9273e 100644
--- a/wrk/zigstd/main.zig
+++ b/wrk/zigstd/main.zig
@@ -1,43 +1,33 @@
 const std = @import("std");
 
 pub fn main() !void {
-    var gpa = std.heap.GeneralPurposeAllocator(.{
-        .thread_safe = true,
-    }){};
-    var allocator = gpa.allocator();
+    // var gpa = std.heap.GeneralPurposeAllocator(.{
+    //     .thread_safe = true,
+    // }){};
+    // const allocator = gpa.allocator();
 
-    var server = std.http.Server.init(allocator, .{
+    const address = try std.net.Address.parseIp("127.0.0.1", 3000);
+    var http_server = try address.listen(.{
         .reuse_address = true,
     });
-    defer server.deinit();
 
-    const address = try std.net.Address.parseIp("127.0.0.1", 3000);
-    try server.listen(address);
+    var read_buffer: [2048]u8 = undefined;
 
-    const max_header_size = 8192;
+    // const max_header_size = 8192;
 
     while (true) {
-        var res = try server.accept(.{
-            .allocator = allocator,
-            .header_strategy = .{ .dynamic = max_header_size },
-        });
-        // const start_time = std.time.nanoTimestamp();
-        defer res.deinit();
-        defer _ = res.reset();
-        try res.wait();
+        const connection = try http_server.accept();
+        defer connection.stream.close();
+        var server = std.http.Server.init(connection, &read_buffer);
 
+        var request = try server.receiveHead();
         const server_body: []const u8 = "HI FROM ZIG STD!\n";
-        res.transfer_encoding = .{ .content_length = server_body.len };
-        try res.headers.append("content-type", "text/plain");
-        try res.headers.append("connection", "close");
-        try res.do();
 
-        var buf: [128]u8 = undefined;
-        _ = try res.readAll(&buf);
-        _ = try res.writer().writeAll(server_body);
-        try res.finish();
-        // const end_time = std.time.nanoTimestamp();
-        // const diff = end_time - start_time;
-        // std.debug.print("{d}\n", .{diff});
+        try request.respond(server_body, .{
+            .extra_headers = &.{
+                .{ .name = "content_type", .value = "text/plain" },
+                .{ .name = "connection", .value = "close" },
+            },
+        });
     }
 }