diff --git a/.github/workflows/deploy-app.yml b/.github/workflows/deploy-app.yml
index 5581104..5971e72 100644
--- a/.github/workflows/deploy-app.yml
+++ b/.github/workflows/deploy-app.yml
@@ -3,8 +3,6 @@ run-name: "Run ${{github.run_id}}, triggered by ${{github.actor}}"
 
 on:
   workflow_dispatch:
-  pull_request:
-    branches: [ "main" ]
 
 jobs:
   deploy-backend:
@@ -17,6 +15,7 @@ jobs:
           heroku_api_key: ${{secrets.HEROKU_API_KEY}}
           heroku_app_name: ${{ secrets.HEROKU_BACKEND_NAME }}
           heroku_email: ${{ secrets.HEROKU_EMAIL }}
+          branch: 'main'
           appdir: 'backend'
           procfile: 'web: java $JAVA_OPTS -Dserver.port=$PORT -jar build/libs/backend-1.0.0.jar --spring.profiles.active=prod'
 
@@ -30,4 +29,5 @@ jobs:
           heroku_api_key: ${{secrets.HEROKU_API_KEY}}
           heroku_app_name: ${{ secrets.HEROKU_FRONTEND_NAME }}
           heroku_email: ${{ secrets.HEROKU_EMAIL }}
+          branch: 'main'
           appdir: 'frontend'