diff --git a/.github/workflows/test-publish.yml b/.github/workflows/test-publish.yml
index 706ccf8..260671a 100644
--- a/.github/workflows/test-publish.yml
+++ b/.github/workflows/test-publish.yml
@@ -9,7 +9,7 @@ on:
       - "v*.*.*"
   pull_request:
     branches:
-      - $default-branch
+      - "master"
 
 env:
   REGISTRY: ghcr.io