diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 49fcf539..8621ce26 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -49,7 +49,7 @@ jobs:
         uses: actions-rs/clippy-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-          args: --all-features --all-targets
+          args: --all-features --all-targets -- -D warnings
 
   fmt:
     name: Rustfmt