diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index a84107b..4ea7949 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -1,6 +1,10 @@
 name: Rust
 
-on: [push]
+on: 
+  pull_request:
+  push:
+    branches:
+      - master
 
 jobs:
   fmt: