diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index a0e3feb..4eec08a 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -21,3 +21,4 @@ jobs:
           exclude: "./.git/*" # Optional.
           check_all_files_with_shebangs: "true" # Optional.
           fail_on_error: "true"
+          shellcheck_flags: --severity=warning