diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 841341a..68eac25 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,6 +18,7 @@ jobs:
       - name: 🦀 Install Rustfmt
         uses: actions-rs/toolchain@v1
         with:
+          toolchain: stable
           components: rustfmt
 
       - name: 🔧 Check