diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 2c77842..c269da1 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -108,7 +108,7 @@ jobs:
 
       - run: |
           echo "# System Diff" >> $GITHUB_STEP_SUMMARY
-          nix run "nixpkgs#nvd" diff ./current ./updated | tee -a $GITHUB_STEP_SUMMARY
+          nix store diff-closures ./current ./updated | tee -a $GITHUB_STEP_SUMMARY
       - run: df -h
 
       # is this necessary?