diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 1bb945528d91..804cc6dfe3bd 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -62,7 +62,7 @@ jobs:
     
     - uses: actions/checkout@v1
       with:
-        ref: v2
+        ref: v5-develop
         fetch-depth: 1
 
     - name: Copy .env