diff --git a/.github/workflows/tarpaulin.yml b/.github/workflows/tarpaulin.yml
index 408b00b..048fcff 100644
--- a/.github/workflows/tarpaulin.yml
+++ b/.github/workflows/tarpaulin.yml
@@ -2,7 +2,8 @@
 name: tarpaulin
 on:
   push:
-  pull_request:
+    branches:
+      - master
 jobs:
   check:
     runs-on: ubuntu-20.04