diff --git a/ruby-sdk/Cargo.lock b/ruby-sdk/Cargo.lock
index 39d050d6..f342f2a2 100644
--- a/ruby-sdk/Cargo.lock
+++ b/ruby-sdk/Cargo.lock
@@ -304,7 +304,7 @@ dependencies = [
 
 [[package]]
 name = "eppo_client"
-version = "3.1.0"
+version = "3.1.1"
 dependencies = [
  "env_logger",
  "eppo_core",
@@ -318,6 +318,8 @@ dependencies = [
 [[package]]
 name = "eppo_core"
 version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34f3fc5a7f54cc47a5ebf063025176726db7eb5e51661185b5f4d20aaacea611"
 dependencies = [
  "chrono",
  "derive_more",
diff --git a/ruby-sdk/ext/eppo_client/Cargo.toml b/ruby-sdk/ext/eppo_client/Cargo.toml
index 170e6241..b6916f5b 100644
--- a/ruby-sdk/ext/eppo_client/Cargo.toml
+++ b/ruby-sdk/ext/eppo_client/Cargo.toml
@@ -1,6 +1,7 @@
 [package]
 name = "eppo_client"
-version = "3.1.0"
+# TODO: this version and lib/eppo_client/version.rb should be in sync
+version = "3.1.1"
 edition = "2021"
 license = "MIT"
 publish = false
diff --git a/ruby-sdk/lib/eppo_client/version.rb b/ruby-sdk/lib/eppo_client/version.rb
index b54a790a..0be24923 100644
--- a/ruby-sdk/lib/eppo_client/version.rb
+++ b/ruby-sdk/lib/eppo_client/version.rb
@@ -2,5 +2,5 @@
 
 # TODO: this version and ext/eppo_rb/Cargo.toml should be in sync
 module EppoClient
-  VERSION = "3.1.0"
+  VERSION = "3.1.1"
 end
diff --git a/rust-sdk/Cargo.toml b/rust-sdk/Cargo.toml
index 0d68b196..fb542dcb 100644
--- a/rust-sdk/Cargo.toml
+++ b/rust-sdk/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "eppo"
-version = "3.0.1"
+version = "3.0.2"
 edition = "2021"
 description = "Eppo SDK for Rust"
 homepage = "https://docs.geteppo.com/sdks/server-sdks/rust"