diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 54c5075..3cf2836 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
         rust: [1.39.0, stable]
     runs-on: ${{ matrix.platform }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: ${{ matrix.rust }}
@@ -42,7 +42,7 @@ jobs:
     name: run clippy lints
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
         with:
             toolchain: 1.46.0
@@ -52,3 +52,18 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           args: --all-features
+
+  fmt:
+    name: run rustfmt
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions-rs/toolchain@v1
+      with:
+          toolchain: 1.46.0
+          override: true
+    - run: rustup component add rustfmt
+    - uses: actions-rs/cargo@v1
+      with:
+        command: fmt
+        args: --all -- --check