diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 33787e5..6b686e6 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -15,6 +15,9 @@ jobs:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest, macos-13, windows-latest]
+    defaults:
+      run:
+        shell: bash
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4