diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5d0ae78..c40e9d4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -98,4 +98,4 @@ jobs:
 
       - name: Validate Custom Input File
         run: |
-          pytest
+          poetry run python -m pytest