diff --git a/.github/workflows/rust-fmt.yml b/.github/workflows/rust-fmt.yml
index 31d3d73..fd77c8a 100644
--- a/.github/workflows/rust-fmt.yml
+++ b/.github/workflows/rust-fmt.yml
@@ -9,6 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
       - uses: mbrobbel/rustfmt-check@master
         with:
           token: ${{ secrets.GITHUB_TOKEN }}