diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index 372f5027..7758d0f4 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -2,7 +2,9 @@ name: testsuite
 
 on:
   push:
+    branches: [master]
   pull_request:
+    branches: [master]
 
 jobs:
   build-clj: