diff --git a/pkgs/default.nix b/pkgs/default.nix
index dbb9242..cfb14f5 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -8,6 +8,10 @@
   opencode = inputs.opencode.packages.${pkgs.system}.opencode.overrideAttrs (old: {
     postPatch = (old.postPatch or "") + ''
       substituteInPlace package.json --replace-fail '"packageManager": "bun@1.3.9"' '"packageManager": "bun@1.3.8"'
+      # Skip bun version check in script - nixpkgs provides 1.3.8 while upstream requires ^1.3.9
+      substituteInPlace packages/script/src/index.ts --replace-fail \
+        'if (!semver.satisfies(process.versions.bun, expectedBunVersionRange))' \
+        'if (false && !semver.satisfies(process.versions.bun, expectedBunVersionRange))'
     '';
   });
 in {