diff --git a/.github/workflows/checkout.yml b/.github/workflows/checkout.yml
index 1749fec..c82292e 100644
--- a/.github/workflows/checkout.yml
+++ b/.github/workflows/checkout.yml
@@ -7,7 +7,7 @@ name: Dart
 
 on:
   pull_request:
-    branches: [ "main" ]
+    branches: [ "master" ]
     paths:
       - 'lib/**'
       - '.github/**'