diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 36c9e88..10bc4b5 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -38,4 +38,4 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: clippy
-          args: --workspace
+          args: --workspace -- --deny warnings