diff --git a/ci-tools/update-nixpkgs b/ci-tools/update-nixpkgs
index 7040bc5c8ebf4d784123a156a2a3383fa1677c53..554ca17094dfbcc589d4510ff33ae2a07d4364c6 100755
--- a/ci-tools/update-nixpkgs
+++ b/ci-tools/update-nixpkgs
@@ -18,7 +18,7 @@ nix-shell ./shell.nix --run update-nixpkgs
 git diff
 
 # nix-build -A morph -o result-after
-diff=$(nix --extra-experimental-features nix-command store diff-closures ./result-before/ ./result-after/)
+# diff=$(nix --extra-experimental-features nix-command store diff-closures ./result-before/ ./result-after/)
 
 git commit -am "bump nixpkgs version"
 git push origin "${TARGET_BRANCH}:${TARGET_BRANCH}"