diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a832ce0..b4b377c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,4 +21,4 @@ jobs:
           node-version: 16
       - run: npm ci
       - run: script/build
-      - run: npm exec prettier --check src
+      - run: npm exec -- prettier --check src