diff --git a/.github/workflows/dev_manual_index.yml b/.github/workflows/dev_manual_index.yml
index 340cb28b9..d890d4271 100644
--- a/.github/workflows/dev_manual_index.yml
+++ b/.github/workflows/dev_manual_index.yml
@@ -56,6 +56,7 @@ jobs:
         uses: actions/checkout@v2
         with:
           repository: ror-community/validation-suite
+          ref: schema-v2
           path: validation-suite
       - name: Validate files
         id: validatefiles