diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ecd7e6d..17d1aad 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,6 +20,9 @@ jobs:
       - name: cargo build (debug; default features)
         run: cargo build --all-targets
 
+      - name: cargo fmt
+        run: cargo fmt -- --check
+
       - name: cargo clippy
         run: cargo clippy --all-targets -- -D warnings