diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 27f0318..f1a71c1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -63,7 +63,7 @@ jobs:
       uses: actions-rs/cargo@v1
       with:
         command: test
-        args: --all --features unstable attributes
+        args: --all --features "unstable attributes"
 
   check_fmt_and_docs:
     name: Checking fmt and docs