diff --git a/pkgs/development/web/nodejs/v21.nix b/pkgs/development/web/nodejs/v21.nix
new file mode 100644
index 00000000000000..bb90551030a6a4
--- /dev/null
+++ b/pkgs/development/web/nodejs/v21.nix
@@ -0,0 +1,25 @@
+{ callPackage, openssl, python3, enableNpm ? true }:
+
+let
+  buildNodejs = callPackage ./nodejs.nix {
+    inherit openssl;
+    python = python3;
+  };
+
+  gypPatches = callPackage ./gyp-patches.nix { } ++ [
+    ./gyp-patches-pre-v22-import-sys.patch
+  ];
+in
+buildNodejs {
+  inherit enableNpm;
+  version = "21.7.3";
+  sha256 = "sha256-Zosm+xv8HP9gYiu889cVhD4W9QyPMOn2T7QUGBTXmiE=";
+  patches = [
+    ./configure-emulator.patch
+    ./configure-armv6-vfpv2.patch
+    ./disable-darwin-v8-system-instrumentation-node19.patch
+    ./bypass-darwin-xcrun-node16.patch
+    ./node-npm-build-npm-package-logic.patch
+    ./use-correct-env-in-tests.patch
+  ] ++ gypPatches;
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 39706f6511a2ee..b6fc904d378d50 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9501,6 +9501,10 @@ with pkgs;
   nodejs-slim_20 = callPackage ../development/web/nodejs/v20.nix { enableNpm = false; };
   corepack_20 = hiPrio (callPackage ../development/web/nodejs/corepack.nix { nodejs = nodejs_20; });
 
+  nodejs_21 = callPackage ../development/web/nodejs/v21.nix { };
+  nodejs-slim_21 = callPackage ../development/web/nodejs/v21.nix { enableNpm = false; };
+  corepack_21 = hiPrio (callPackage ../development/web/nodejs/corepack.nix { nodejs = nodejs_21; });
+
   nodejs_22 = callPackage ../development/web/nodejs/v22.nix { };
   nodejs-slim_22 = callPackage ../development/web/nodejs/v22.nix { enableNpm = false; };
   corepack_22 = hiPrio (callPackage ../development/web/nodejs/corepack.nix { nodejs = nodejs_22; });