diff --git a/.github/workflows/deploy-to-app-engine.yml b/.github/workflows/deploy-to-app-engine.yml
index 62e80bab..35fbc4b3 100644
--- a/.github/workflows/deploy-to-app-engine.yml
+++ b/.github/workflows/deploy-to-app-engine.yml
@@ -6,6 +6,10 @@ on:
     branches:
     - main
 
+concurrency:
+  group: prod-deploy
+  cancel-in-progress: true
+
 jobs:
   deploy:
     if: github.event.pull_request.merged == true