diff --git a/pkgs/development/python-modules/orjson/default.nix b/pkgs/development/python-modules/orjson/default.nix
index c222fd6a5f88..88efac21ff86 100644
--- a/pkgs/development/python-modules/orjson/default.nix
+++ b/pkgs/development/python-modules/orjson/default.nix
@@ -29,24 +29,24 @@
 
 buildPythonPackage rec {
   pname = "orjson";
-  version = "3.12.0";
+  version = "3.11.9";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "ijl";
     repo = "orjson";
     tag = version;
-    hash = "sha256-pmp8j6035L46ejDOkz9aQnMdX48MFFmNHM3k5TW6kqM=";
+    hash = "sha256-CCwpD6pzO80GlMvjJt4HURQxbghYg53OG/6ZIJWggNU=";
   };
 
-  patches = [
+  patches = lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
     # fix architecture checks in build.rs to fix build for non x86_64
     ./cross-arch-compat.patch
   ];
 
   cargoDeps = rustPlatform.fetchCargoVendor {
     inherit pname version src;
-    hash = "sha256-h0zx3D4gVvPhHX4ziXUL4eKJEKlYOAj+9wiRbV2yuRw=";
+    hash = "sha256-F1TFEj26trVV0TjK6tkS8kiorWRF0uijb1jQko7RDSM=";
   };
 
   nativeBuildInputs = [