diff --git a/.github/scripts/update-helm-charts-version.sh b/.github/scripts/update-helm-charts-version.sh
index f1cd457e84..d501ed8d02 100755
--- a/.github/scripts/update-helm-charts-version.sh
+++ b/.github/scripts/update-helm-charts-version.sh
@@ -30,7 +30,7 @@ update_helm_charts_version() {
 
   # Commit the changes.
   git add .
-  git commit -m "chore: Update GreptimeDB version to ${VERSION}"
+  git commit -s -m "chore: Update GreptimeDB version to ${VERSION}"
   git push origin $BRANCH_NAME
 
   # Create a Pull Request.
diff --git a/.github/scripts/update-homebrew-greptme-version.sh b/.github/scripts/update-homebrew-greptme-version.sh
index 8bde376b62..4abf4f2218 100755
--- a/.github/scripts/update-homebrew-greptme-version.sh
+++ b/.github/scripts/update-homebrew-greptme-version.sh
@@ -26,7 +26,7 @@ update_homebrew_greptime_version() {
 
   # Commit the changes.
   git add .
-  git commit -m "chore: Update GreptimeDB version to ${VERSION}"
+  git commit -s -m "chore: Update GreptimeDB version to ${VERSION}"
   git push origin $BRANCH_NAME
 
   # Create a Pull Request.