diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 77452ce6..b863b964 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -1,6 +1,10 @@
 name: codecoverage 
 
-on: [ push, pull_request ]
+on:
+  pull_request:
+  push:
+    branches:
+    - master
 
 jobs:
   codecoverage_test: