diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 94ac0dc..d3a8fd2 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -49,4 +49,5 @@ jobs:
         run: poetry lock && poetry install
 
       - name: Test
+        shell: bash
         run: .venv/bin/python -m unittest discover -v -s tests