diff --git a/.github/workflows/python-unittest-on-pr-and-push.yml b/.github/workflows/python-unittest-on-pr-and-push.yml
index 8267f22..1ac893a 100644
--- a/.github/workflows/python-unittest-on-pr-and-push.yml
+++ b/.github/workflows/python-unittest-on-pr-and-push.yml
@@ -2,9 +2,9 @@ name: Python unittest
 
 on:
   pull_request:
-    branches: [ "master" ]
+    branches: [ "main" ]
   push:
-    branches: [ "master" ]
+    branches: [ "main" ]
 
 jobs:
   python_unittest: