diff --git a/synthtool/gcp/templates/python_library/.github/workflows/unittest.yml b/synthtool/gcp/templates/python_library/.github/workflows/unittest.yml
index bb2871dde..d665557c5 100644
--- a/synthtool/gcp/templates/python_library/.github/workflows/unittest.yml
+++ b/synthtool/gcp/templates/python_library/.github/workflows/unittest.yml
@@ -30,6 +30,7 @@ jobs:
       with:
         name: coverage-artifact-${{ '{{' }} matrix.python {{ '}}' }}
         path: .coverage-${{ '{{' }} matrix.python {{ '}}' }}
+        include-hidden-files: true
 
   cover:
     runs-on: ubuntu-latest