diff --git a/src/auth.rs b/src/auth.rs
index fae91bf..0aaa8b5 100644
--- a/src/auth.rs
+++ b/src/auth.rs
@@ -297,15 +297,14 @@ impl AccessPerm {
 
 pub fn www_authenticate(res: &mut Response, args: &Args) -> Result<()> {
     if args.auth.use_hashed_password {
-        let basic = HeaderValue::from_str(&format!("Basic realm=\"{}\"", REALM))?;
+        let basic = HeaderValue::from_str(&format!("Basic realm=\"{REALM}\""))?;
         res.headers_mut().insert(WWW_AUTHENTICATE, basic);
     } else {
         let nonce = create_nonce()?;
         let digest = HeaderValue::from_str(&format!(
-            "Digest realm=\"{}\", nonce=\"{}\", qop=\"auth\"",
-            REALM, nonce
+            "Digest realm=\"{REALM}\", nonce=\"{nonce}\", qop=\"auth\""
         ))?;
-        let basic = HeaderValue::from_str(&format!("Basic realm=\"{}\"", REALM))?;
+        let basic = HeaderValue::from_str(&format!("Basic realm=\"{REALM}\""))?;
         res.headers_mut().append(WWW_AUTHENTICATE, digest);
         res.headers_mut().append(WWW_AUTHENTICATE, basic);
     }
@@ -367,7 +366,7 @@ pub fn check_auth(
             }
 
             let mut h = Context::new();
-            h.consume(format!("{}:{}:{}", auth_user, REALM, auth_pass).as_bytes());
+            h.consume(format!("{auth_user}:{REALM}:{auth_pass}").as_bytes());
             let auth_pass = format!("{:x}", h.compute());
 
             let mut ha = Context::new();
diff --git a/src/http_logger.rs b/src/http_logger.rs
index 9d1d644..b296c67 100644
--- a/src/http_logger.rs
+++ b/src/http_logger.rs
@@ -64,8 +64,8 @@ impl HttpLogger {
             }
         }
         match err {
-            Some(err) => error!("{} {}", output, err),
-            None => info!("{}", output),
+            Some(err) => error!("{output} {err}"),
+            None => info!("{output}"),
         }
     }
 }
diff --git a/src/main.rs b/src/main.rs
index 7267ad9..6a7d160 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -57,7 +57,7 @@ async fn main() -> Result<()> {
         ret = join_all(handles) => {
             for r in ret {
                 if let Err(e) = r {
-                    error!("{}", e);
+                    error!("{e}");
                 }
             }
             Ok(())
@@ -154,7 +154,7 @@ fn serve(args: Args, running: Arc<AtomicBool>) -> Result<Vec<JoinHandle<()>>> {
                     path.into()
                 };
                 let listener = tokio::net::UnixListener::bind(socket_path)
-                    .with_context(|| format!("Failed to bind `{}`", path))?;
+                    .with_context(|| format!("Failed to bind `{path}`"))?;
                 let handle = tokio::spawn(async move {
                     loop {
                         let Ok((stream, _addr)) = listener.accept().await else {
diff --git a/src/server.rs b/src/server.rs
index e78f0d5..c7165cd 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -502,7 +502,7 @@ impl Server {
         };
         let stream = IncomingStream::new(req.into_body());
 
-        let body_with_io_error = stream.map_err(|err| io::Error::new(io::ErrorKind::Other, err));
+        let body_with_io_error = stream.map_err(io::Error::other);
         let body_reader = StreamReader::new(body_with_io_error);
 
         pin_mut!(body_reader);
@@ -628,7 +628,7 @@ impl Server {
     ) -> Result<()> {
         let (mut writer, reader) = tokio::io::duplex(BUF_SIZE);
         let filename = try_get_file_name(path)?;
-        set_content_disposition(res, false, &format!("{}.zip", filename))?;
+        set_content_disposition(res, false, &format!("{filename}.zip"))?;
         res.headers_mut()
             .insert("content-type", HeaderValue::from_static("application/zip"));
         if head_only {
@@ -855,7 +855,7 @@ impl Server {
                     file.seek(SeekFrom::Start(start)).await?;
                     let range_size = end - start + 1;
                     *res.status_mut() = StatusCode::PARTIAL_CONTENT;
-                    let content_range = format!("bytes {}-{}/{}", start, end, size);
+                    let content_range = format!("bytes {start}-{end}/{size}");
                     res.headers_mut()
                         .insert(CONTENT_RANGE, content_range.parse()?);
                     res.headers_mut()
@@ -879,7 +879,7 @@ impl Server {
                     for (start, end) in ranges {
                         file.seek(SeekFrom::Start(start)).await?;
                         let range_size = end - start + 1;
-                        let content_range = format!("bytes {}-{}/{}", start, end, size);
+                        let content_range = format!("bytes {start}-{end}/{size}");
                         let part_header = format!(
                             "--{boundary}\r\nContent-Type: {content_type}\r\nContent-Range: {content_range}\r\n\r\n",
                         );
@@ -1704,7 +1704,7 @@ fn set_content_disposition(res: &mut Response, inline: bool, filename: &str) ->
         })
         .collect();
     let value = if filename.is_ascii() {
-        HeaderValue::from_str(&format!("{kind}; filename=\"{}\"", filename,))?
+        HeaderValue::from_str(&format!("{kind}; filename=\"{filename}\"",))?
     } else {
         HeaderValue::from_str(&format!(
             "{kind}; filename=\"{}\"; filename*=UTF-8''{}",
@@ -1799,7 +1799,7 @@ async fn sha256_file(path: &Path) -> Result<String> {
     }
 
     let result = hasher.finalize();
-    Ok(format!("{:x}", result))
+    Ok(format!("{result:x}"))
 }
 
 fn has_query_flag(query_params: &HashMap<String, String>, name: &str) -> bool {
diff --git a/tests/cache.rs b/tests/cache.rs
index 5890d81..2e4af2f 100644
--- a/tests/cache.rs
+++ b/tests/cache.rs
@@ -49,7 +49,7 @@ fn same_etag(etag: &str) -> String {
 }
 
 fn different_etag(etag: &str) -> String {
-    format!("{}1234", etag)
+    format!("{etag}1234")
 }
 
 #[rstest]
diff --git a/tests/range.rs b/tests/range.rs
index cb56889..209ed1e 100644
--- a/tests/range.rs
+++ b/tests/range.rs
@@ -41,7 +41,7 @@ fn get_file_range_invalid(server: TestServer) -> Result<(), Error> {
 }
 
 fn parse_multipart_body<'a>(body: &'a str, boundary: &str) -> Vec<(HeaderMap, &'a str)> {
-    body.split(&format!("--{}", boundary))
+    body.split(&format!("--{boundary}"))
         .filter(|part| !part.is_empty() && *part != "--\r\n")
         .map(|part| {
             let (head, body) = part.trim_ascii().split_once("\r\n\r\n").unwrap();