diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 439d12ad..1870278a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -28,7 +28,7 @@ jobs:
           toolchain: stable
           profile: minimal
           components: rustfmt
-    - run: cargo fmt
+    - run: cargo fmt --check
   config:
     runs-on: ubuntu-latest
     steps: