diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index bc3d12a9..8b9076e1 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -2,6 +2,7 @@ name: Code coverage
 
 on:
   push:
+    branches: [ master ]
 
 env:
   CARGO_TERM_COLOR: always