diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index 94b4823..559a18d 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -21,6 +21,13 @@ jobs:
           reporter: ${{ steps.reporter.outputs.value }}
           level: warning
 
+  shfmt:
+    name: runner / shfmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: reviewdog/action-shfmt@v1
+
   actionlint:
     name: runner / actionlint
     runs-on: ubuntu-latest