diff --git a/.github/workflows/validation.yml b/.github/workflows/validation.yml
index 93b86e6a..f8bf6718 100644
--- a/.github/workflows/validation.yml
+++ b/.github/workflows/validation.yml
@@ -26,4 +26,4 @@ jobs:
       run: pip install -e .
 
     - name: Run the nomenclature project validation
-      run: nomenclature validate-project . --dimension region --dimension variable
+      run: nomenclature validate-project . --dimension region --dimension variable --dimension subannual