diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 73ba06f..468de89 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,6 +31,7 @@ jobs:
         with:
           toolchain: stable
       - run: rustup component add clippy
+      - run: cargo fmt --check
       - uses: actions-rs/clippy-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/src/request/builder.rs b/src/request/builder.rs
index 055ce05..9047a57 100644
--- a/src/request/builder.rs
+++ b/src/request/builder.rs
@@ -135,7 +135,10 @@ impl<B> RequestBuilder<B> {
         };
         self.header(
             http::header::AUTHORIZATION,
-            format!("Basic {}", base64::engine::general_purpose::STANDARD.encode(auth.as_bytes())),
+            format!(
+                "Basic {}",
+                base64::engine::general_purpose::STANDARD.encode(auth.as_bytes())
+            ),
         )
     }
 
diff --git a/tests/tools/tls.rs b/tests/tools/tls.rs
index 7486682..2ba58a6 100644
--- a/tests/tools/tls.rs
+++ b/tests/tools/tls.rs
@@ -7,7 +7,7 @@ use std::io::{self, BufReader, Cursor, Read};
 use std::path::PathBuf;
 use std::pin::Pin;
 use std::sync::Arc;
-use std::task::{Context, Poll, ready};
+use std::task::{ready, Context, Poll};
 
 use hyper::server::accept::Accept;
 use hyper::server::conn::{AddrIncoming, AddrStream};