diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c9a0adf..0a807f1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,4 +6,4 @@ jobs:
         steps:
             - uses: actions/checkout@v1
             - name: Run shellcheck.
-              run: shellcheck kiss
+              run: shellcheck kiss contrib/*