diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 7a9f38a..f65d370 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -54,9 +54,11 @@ jobs:
           python-version: ${{ matrix.PYTHON_VERSION }}
 
       - name: Install the project's dependencies
+        shell: bash -el {0}
         run: poetry install
 
       - name: Test the codebase
+        shell: bash -el {0}
         run: poetry run pytest
 
       - name: Upload coverage reports to Codecov
@@ -65,4 +67,5 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
 
       - name: Test building the documentation
+        shell: bash -el {0}
         run: set -euo pipefail && poetry run mkdocs build --strict