diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 214cdf2..18dac21 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -101,10 +101,8 @@ jobs:
 
       - run: |
           echo "# System Diff" >> $GITHUB_STEP_SUMMARY
-          diff=$(nix store diff-closures ./current ./updated)
-          echo "$diff"
-          echo "$diff" >> summary.md
-          echo "$diff" | sed 's/\x1B\[[0-9;]\{1,\}[A-Za-z]//g' >> $GITHUB_STEP_SUMMARY
+          nix run "nixpkgs#nvd" -- --color always diff ./current ./updated >> summary.md
+          printf "```\n%s```\n" "$(nix run "nixpkgs#nvd" -- diff ./current ./updated)" >> $GITHUB_STEP_SUMMARY
 
       - run: df -h