diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index 059fb67..bc162eb 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -25,6 +25,15 @@ jobs:
         - uses: dtolnay/rust-toolchain@stable
         - name: cargo fmt
           run: cargo fmt
+  fmt-nightly:
+    runs-on: ubuntu-latest
+    steps:
+        - uses: actions/checkout@v3
+        - uses: dtolnay/rust-toolchain@nightly
+          with:
+            components: rustfmt
+        - name: cargo +nightly fmt
+          run: cargo +nightly fmt
   test:
     runs-on: ubuntu-latest
     steps:
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..5cacac1
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1,4 @@
+unstable_features = true
+imports_granularity = "Crate"
+group_imports = "One"
+format_code_in_doc_comments = true