diff --git a/poem-grpc/src/metadata.rs b/poem-grpc/src/metadata.rs
index 9ecb68f333..fe72114ecb 100644
--- a/poem-grpc/src/metadata.rs
+++ b/poem-grpc/src/metadata.rs
@@ -168,7 +168,7 @@ pub struct GetBinaryAll<'a> {
     iter: poem::http::header::ValueIter<'a, HeaderValue>,
 }
 
-impl<'a> Iterator for GetBinaryAll<'a> {
+impl Iterator for GetBinaryAll<'_> {
     type Item = Vec<u8>;
 
     fn next(&mut self) -> Option<Self::Item> {
diff --git a/poem-openapi/src/payload/base64_payload.rs b/poem-openapi/src/payload/base64_payload.rs
index 4ee10c3ff6..1fa489057d 100644
--- a/poem-openapi/src/payload/base64_payload.rs
+++ b/poem-openapi/src/payload/base64_payload.rs
@@ -93,7 +93,7 @@ impl<T: Send> Payload for Base64<T> {
                 && (content_type.subtype() == "plain"
                 || content_type
                     .suffix()
-                    .map_or(false, |v| v == "plain")))
+                    .is_some_and(|v| v == "plain")))
     }
 
     fn schema_ref() -> MetaSchemaRef {
diff --git a/poem-openapi/src/payload/binary.rs b/poem-openapi/src/payload/binary.rs
index 1932d0de02..609c34ceff 100644
--- a/poem-openapi/src/payload/binary.rs
+++ b/poem-openapi/src/payload/binary.rs
@@ -92,7 +92,7 @@ impl<T: Send> Payload for Binary<T> {
                 && (content_type.subtype() == "octet-stream"
                 || content_type
                     .suffix()
-                    .map_or(false, |v| v == "octet-stream")))
+                    .is_some_and(|v| v == "octet-stream")))
     }
 
     fn schema_ref() -> MetaSchemaRef {
diff --git a/poem-openapi/src/payload/form.rs b/poem-openapi/src/payload/form.rs
index 2464989064..b06a43cbd3 100644
--- a/poem-openapi/src/payload/form.rs
+++ b/poem-openapi/src/payload/form.rs
@@ -36,7 +36,7 @@ impl<T: Type> Payload for Form<T> {
                 && (content_type.subtype() == "x-www-form-urlencoded"
                 || content_type
                     .suffix()
-                    .map_or(false, |v| v == "x-www-form-urlencoded")))
+                    .is_some_and(|v| v == "x-www-form-urlencoded")))
     }
 
     fn schema_ref() -> MetaSchemaRef {
diff --git a/poem-openapi/src/payload/html.rs b/poem-openapi/src/payload/html.rs
index ed32d9402e..d501917fe9 100644
--- a/poem-openapi/src/payload/html.rs
+++ b/poem-openapi/src/payload/html.rs
@@ -35,7 +35,7 @@ impl<T: Send> Payload for Html<T> {
                 && (content_type.subtype() == "html"
                 || content_type
                     .suffix()
-                    .map_or(false, |v| v == "html")))
+                    .is_some_and(|v| v == "html")))
     }
 
     fn schema_ref() -> MetaSchemaRef {
diff --git a/poem-openapi/src/payload/json.rs b/poem-openapi/src/payload/json.rs
index ce858a9d96..62e00900eb 100644
--- a/poem-openapi/src/payload/json.rs
+++ b/poem-openapi/src/payload/json.rs
@@ -37,7 +37,7 @@ impl<T: Type> Payload for Json<T> {
                 && (content_type.subtype() == "json"
                 || content_type
                     .suffix()
-                    .map_or(false, |v| v == "json")))
+                    .is_some_and(|v| v == "json")))
     }
 
     fn schema_ref() -> MetaSchemaRef {
diff --git a/poem-openapi/src/payload/plain_text.rs b/poem-openapi/src/payload/plain_text.rs
index 8adcc40337..62fa4998ec 100644
--- a/poem-openapi/src/payload/plain_text.rs
+++ b/poem-openapi/src/payload/plain_text.rs
@@ -35,7 +35,7 @@ impl<T: Send> Payload for PlainText<T> {
                 && (content_type.subtype() == "plain"
                 || content_type
                     .suffix()
-                    .map_or(false, |v| v == "plain")))
+                    .is_some_and(|v| v == "plain")))
     }
 
     fn schema_ref() -> MetaSchemaRef {
diff --git a/poem-openapi/src/payload/xml.rs b/poem-openapi/src/payload/xml.rs
index 36558e4470..2998d16a02 100644
--- a/poem-openapi/src/payload/xml.rs
+++ b/poem-openapi/src/payload/xml.rs
@@ -37,7 +37,7 @@ impl<T: Type> Payload for Xml<T> {
                 && (content_type.subtype() == "xml"
                 || content_type
                     .suffix()
-                    .map_or(false, |v| v == "xml")))
+                    .is_some_and(|v| v == "xml")))
     }
 
     fn schema_ref() -> MetaSchemaRef {
diff --git a/poem-openapi/src/payload/yaml.rs b/poem-openapi/src/payload/yaml.rs
index 24e4bd5d78..e7c587b1d2 100644
--- a/poem-openapi/src/payload/yaml.rs
+++ b/poem-openapi/src/payload/yaml.rs
@@ -37,7 +37,7 @@ impl<T: Type> Payload for Yaml<T> {
                 && (content_type.subtype() == "yaml"
                 || content_type
                     .suffix()
-                    .map_or(false, |v| v == "yaml")))
+                    .is_some_and(|v| v == "yaml")))
     }
 
     fn schema_ref() -> MetaSchemaRef {
diff --git a/poem-openapi/src/registry/ser.rs b/poem-openapi/src/registry/ser.rs
index ade9eb0591..0d394a6cc4 100644
--- a/poem-openapi/src/registry/ser.rs
+++ b/poem-openapi/src/registry/ser.rs
@@ -24,7 +24,7 @@ impl Serialize for MetaSchemaRef {
 
 struct PathMap<'a>(&'a [MetaApi], Option<&'a str>);
 
-impl<'a> Serialize for PathMap<'a> {
+impl Serialize for PathMap<'_> {
     fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
         let mut s = serializer.serialize_map(Some(self.0.len()))?;
         for api in self.0 {
@@ -66,7 +66,7 @@ impl Serialize for MetaResponses {
 
 struct WebhookMap<'a>(&'a [MetaWebhook]);
 
-impl<'a> Serialize for WebhookMap<'a> {
+impl Serialize for WebhookMap<'_> {
     fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
         let mut s = serializer.serialize_map(Some(self.0.len()))?;
         for webhook in self.0 {
@@ -86,7 +86,7 @@ pub(crate) struct Document<'a> {
     pub(crate) url_prefix: Option<&'a str>,
 }
 
-impl<'a> Serialize for Document<'a> {
+impl Serialize for Document<'_> {
     fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
         #[derive(Serialize)]
         #[serde(rename_all = "camelCase")]
diff --git a/poem-openapi/src/types/external/string.rs b/poem-openapi/src/types/external/string.rs
index 27c09b7b8a..31078de0ea 100644
--- a/poem-openapi/src/types/external/string.rs
+++ b/poem-openapi/src/types/external/string.rs
@@ -83,7 +83,7 @@ impl ToHeader for String {
     }
 }
 
-impl<'a> Type for &'a str {
+impl Type for &str {
     const IS_REQUIRED: bool = true;
 
     type RawValueType = Self;
@@ -109,7 +109,7 @@ impl<'a> Type for &'a str {
     }
 }
 
-impl<'a> ToJSON for &'a str {
+impl ToJSON for &str {
     fn to_json(&self) -> Option<Value> {
         Some(Value::String(self.to_string()))
     }
diff --git a/poem/src/endpoint/endpoint.rs b/poem/src/endpoint/endpoint.rs
index e23aee7c6c..5a5613499b 100644
--- a/poem/src/endpoint/endpoint.rs
+++ b/poem/src/endpoint/endpoint.rs
@@ -93,7 +93,7 @@ where
     }
 }
 
-/// The enum `EitherEndpoint` with variants `Left`` and `Right` is a general
+/// The enum `EitherEndpoint` with variants `Left` and `Right` is a general
 /// purpose sum type with two cases.
 pub enum EitherEndpoint<A, B> {
     /// A endpoint of type `A`
diff --git a/poem/src/middleware/mod.rs b/poem/src/middleware/mod.rs
index 0fe8d26a22..bbc072b9a2 100644
--- a/poem/src/middleware/mod.rs
+++ b/poem/src/middleware/mod.rs
@@ -322,9 +322,8 @@ where
     }
 }
 
-/// The enum `EitherMiddleware` with variants `Left`` and `Right` is a general
+/// The enum `EitherMiddleware` with variants `Left` and `Right` is a general
 /// purpose sum type with two cases.
-
 pub enum EitherMiddleware<A, B, E> {
     /// A middleware of type `A`
     A(A, PhantomData<E>),
diff --git a/poem/src/web/cookie.rs b/poem/src/web/cookie.rs
index a241778b47..1b61253d8f 100644
--- a/poem/src/web/cookie.rs
+++ b/poem/src/web/cookie.rs
@@ -574,7 +574,7 @@ pub struct PrivateCookieJar<'a> {
     cookie_jar: &'a CookieJar,
 }
 
-impl<'a> PrivateCookieJar<'a> {
+impl PrivateCookieJar<'_> {
     /// Adds cookie to the parent jar. The cookie’s value is encrypted with
     /// authenticated encryption assuring confidentiality, integrity, and
     /// authenticity.
@@ -608,7 +608,7 @@ pub struct SignedCookieJar<'a> {
     cookie_jar: &'a CookieJar,
 }
 
-impl<'a> SignedCookieJar<'a> {
+impl SignedCookieJar<'_> {
     /// Adds cookie to the parent jar. The cookie’s value is signed assuring
     /// integrity and authenticity.
     pub fn add(&self, cookie: Cookie) {
diff --git a/poem/src/web/form.rs b/poem/src/web/form.rs
index c1f7e48078..4ca19db73c 100644
--- a/poem/src/web/form.rs
+++ b/poem/src/web/form.rs
@@ -118,7 +118,7 @@ fn is_form_content_type(content_type: &str) -> bool {
         && (content_type.subtype() == "x-www-form-urlencoded"
         || content_type
             .suffix()
-            .map_or(false, |v| v == "x-www-form-urlencoded")))
+            .is_some_and(|v| v == "x-www-form-urlencoded")))
 }
 
 #[cfg(test)]
diff --git a/poem/src/web/json.rs b/poem/src/web/json.rs
index d40c13da10..88903ffc7c 100644
--- a/poem/src/web/json.rs
+++ b/poem/src/web/json.rs
@@ -137,7 +137,7 @@ fn is_json_content_type(content_type: &str) -> bool {
         && (content_type.subtype() == "json"
         || content_type
             .suffix()
-            .map_or(false, |v| v == "json")))
+            .is_some_and(|v| v == "json")))
 }
 
 impl<T: Serialize + Send> IntoResponse for Json<T> {
diff --git a/poem/src/web/xml.rs b/poem/src/web/xml.rs
index 28c45eb85c..396ed0ba2d 100644
--- a/poem/src/web/xml.rs
+++ b/poem/src/web/xml.rs
@@ -130,7 +130,7 @@ fn is_xml_content_type(content_type: &str) -> bool {
         && (content_type.subtype() == "xml"
         || content_type
             .suffix()
-            .map_or(false, |v| v == "xml")))
+            .is_some_and(|v| v == "xml")))
 }
 
 impl<T: Serialize + Send> IntoResponse for Xml<T> {
diff --git a/poem/src/web/yaml.rs b/poem/src/web/yaml.rs
index 1960ec694b..60f361bab9 100644
--- a/poem/src/web/yaml.rs
+++ b/poem/src/web/yaml.rs
@@ -131,7 +131,7 @@ fn is_yaml_content_type(content_type: &str) -> bool {
         && (content_type.subtype() == "yaml"
         || content_type
             .suffix()
-            .map_or(false, |v| v == "yaml")))
+            .is_some_and(|v| v == "yaml")))
 }
 
 impl<T: Serialize + Send> IntoResponse for Yaml<T> {