diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
index 2a95b3f9fe5..2fd6cf60533 100644
--- a/.github/workflows/actionlint.yml
+++ b/.github/workflows/actionlint.yml
@@ -12,10 +12,15 @@ jobs:
     timeout-minutes: 60
     steps:
       - uses: actions/checkout@v4
-      - name: Download actionlint
+      - name: Download actionlint and shellcheck
         id: get_actionlint
-        run: bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
+        run: |
+          bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
+          sudo apt-get update
+          sudo apt-get install shellcheck
         shell: bash
       - name: Check workflow files
-        run: ${{ steps.get_actionlint.outputs.executable }} -color
+        run: |
+          ${{ steps.get_actionlint.outputs.executable }} -color
+          shellcheck -s bash ci/testkomodo.sh
         shell: bash