diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 94380586..d967c8cf 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -33,6 +33,7 @@ jobs:
       - name: Test with coverage
         run: |
           scripts/automated_tests/oops_main_test.sh
+        shell: bash
 
       - name: Upload coverage report to codecov
         uses: codecov/codecov-action@v3