diff --git a/.github/workflows/update-formula.yml b/.github/workflows/update-formula.yml
index bd479ea..d67d099 100644
--- a/.github/workflows/update-formula.yml
+++ b/.github/workflows/update-formula.yml
@@ -45,7 +45,7 @@ jobs:
           git add -A Formula
           git config user.name "[BOT] Formula Updater"
           git config user.email "formula-updater@bot.local"
-          git commit -m "Update ${UF_SUBJECT}: ${UF_VERSION}"
+          git commit -s -m "Update ${UF_SUBJECT}: ${UF_VERSION}"
           git push -f --set-upstream origin "$BRANCH_NAME"
       - name: Open PullRequest
         run: gh pr create --fill-verbose --label "$UF_SUBJECT"