diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9e0477272..bcccd8e19 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -135,6 +135,7 @@ jobs:
         /usr/local/bin/wait-for db:3306 -- echo "DB ready"
         
     - name: Run all tests
+      shell: bash
       run: |
         echo "Running checks..."
         ./ietf/manage.py check