diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index c70050276..9e981bf1d 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -2,8 +2,12 @@ name: PR Checks
 
 on:
   pull_request:
+    branches:
+      - master
   pull_request_review:
     types: [submitted]
+    branches:
+      - master
 
 jobs:
   check_docs: