diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0fadb6f4..51e48076 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -34,6 +34,8 @@ jobs:
           check_together: 'yes'
           format: tty
           severity: warning
+        env:
+          SHELLCHECK_OPTS: -x # Enable shellcheck -x option (follow external sources)
 
       - name: Spell-Checking
         uses: codespell-project/actions-codespell@master