diff --git a/.github/workflows/builder.yaml b/.github/workflows/builder.yaml
index 7fa014aa5..e8027792f 100644
--- a/.github/workflows/builder.yaml
+++ b/.github/workflows/builder.yaml
@@ -2,6 +2,8 @@ name: Builder
 
 on:
   pull_request_target:
+    branches:
+      - master
 
 jobs:
   check_for_membership:
@@ -40,9 +42,10 @@ jobs:
           large-packages: false
           docker-images: false
           swap-storage: true
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: refs/pull/${{ github.event.pull_request.number }}/merge
+          allow-unsafe-pr-checkout: true
       - name: Set up Java
         uses: actions/setup-java@v5
         with: