diff --git a/.github/workflows/lint_and_types.yaml b/.github/workflows/lint_and_types.yaml
index bf72b4f3..deaadf9c 100644
--- a/.github/workflows/lint_and_types.yaml
+++ b/.github/workflows/lint_and_types.yaml
@@ -1,8 +1,12 @@
 name: Lint and types
 
 on:
-  - push
-  - pull_request
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
 
 jobs:
   lint: