diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b2a8b32b..3a82673f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -23,6 +23,9 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          # A non-shallow clone is needed for the Differential ShellCheck
+          fetch-depth: 0
 
       - id: ShellCheck
         name: Differential ShellCheck