diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 787c83d..2aaa0ec 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -5,9 +5,9 @@ name: Java CI with Maven
 
 on:
   push:
-    branches: [ "master" ]
+    branches: [ "j21" ]
   pull_request:
-    branches: [ "master" ]
+    branches: [ "j21" ]
 
 jobs:
   build: