diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5b27f70..d4b0b19 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
-      - run: cargo fmt -- --check
+      - run: cargo fmt --all -- --check
 
   c:
     name: C