diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 3283c65..56e06d3 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -1,7 +1,10 @@
 ---
 name: deploy streamlit app
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
 
 env:
   IMAGE_NAME: streamlit-ioi-base