diff --git a/etc/ci/upload_nightly.sh b/etc/ci/upload_nightly.sh
index ff4f7aafc05..474bead8abb 100755
--- a/etc/ci/upload_nightly.sh
+++ b/etc/ci/upload_nightly.sh
@@ -52,7 +52,9 @@ update_brew() {
        > "${tmp_dir}/Formula/servo-bin.rb"
 
   git -C "${tmp_dir}" add ./Formula/servo-bin.rb
-  git -C "${tmp_dir}" commit -m "Version bump: ${version}"
+  git -C "${tmp_dir}" commit \
+      --author="Tom Servo <servo@servo.org>" \
+      --message="Version bump: ${version}"
 
   git -C "${tmp_dir}" push -qf \
       "https://${GITHUB_HOMEBREW_TOKEN}@github.com/servo/homebrew-servo.git" \