diff --git a/Cargo.toml b/Cargo.toml
index 470644e0e..866a7628f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -75,7 +75,7 @@ actix-utils = "0.4.4"
 actix-router = "0.1.5"
 actix-rt = "0.2.4"
 actix-web-codegen = "0.1.2"
-actix-http = "0.2.5"
+actix-http = "0.2.6"
 actix-server = "0.5.1"
 actix-server-config = "0.1.1"
 actix-threadpool = "0.1.1"
@@ -89,7 +89,7 @@ hashbrown = "0.5.0"
 log = "0.4"
 mime = "0.3"
 net2 = "0.2.33"
-parking_lot = "0.8"
+parking_lot = "0.9"
 regex = "1.0"
 serde = { version = "1.0", features=["derive"] }
 serde_json = "1.0"
diff --git a/actix-cors/src/lib.rs b/actix-cors/src/lib.rs
index d9a44d0b8..c76bae925 100644
--- a/actix-cors/src/lib.rs
+++ b/actix-cors/src/lib.rs
@@ -587,10 +587,10 @@ impl Inner {
             }
             Err(CorsError::BadOrigin)
         } else {
-            return match self.origins {
+            match self.origins {
                 AllOrSome::All => Ok(()),
                 _ => Err(CorsError::MissingOrigin),
-            };
+            }
         }
     }
 
@@ -665,7 +665,7 @@ impl Inner {
                     }
                     Err(CorsError::BadRequestHeaders)
                 } else {
-                    return Ok(());
+                    Ok(())
                 }
             }
         }
diff --git a/actix-files/src/lib.rs b/actix-files/src/lib.rs
index c870c9dd0..cf07153fa 100644
--- a/actix-files/src/lib.rs
+++ b/actix-files/src/lib.rs
@@ -107,7 +107,7 @@ impl Stream for ChunkedReadFile {
 }
 
 type DirectoryRenderer =
-    Fn(&Directory, &HttpRequest) -> Result<ServiceResponse, io::Error>;
+    dyn Fn(&Directory, &HttpRequest) -> Result<ServiceResponse, io::Error>;
 
 /// A directory; responds with the generated directory listing.
 #[derive(Debug)]
@@ -211,7 +211,7 @@ fn directory_listing(
     ))
 }
 
-type MimeOverride = Fn(&mime::Name) -> DispositionType;
+type MimeOverride = dyn Fn(&mime::Name) -> DispositionType;
 
 /// Static files handling
 ///
@@ -475,7 +475,7 @@ impl Service for FilesService {
                             Err(e) => ServiceResponse::from_err(e, req),
                         }))
                     }
-                    Err(e) => return self.handle_err(e, req),
+                    Err(e) => self.handle_err(e, req),
                 }
             } else if self.show_index {
                 let dir = Directory::new(self.directory.clone(), path);
@@ -483,7 +483,7 @@ impl Service for FilesService {
                 let x = (self.renderer)(&dir, &req);
                 match x {
                     Ok(resp) => Either::A(ok(resp)),
-                    Err(e) => return Either::A(ok(ServiceResponse::from_err(e, req))),
+                    Err(e) => Either::A(ok(ServiceResponse::from_err(e, req))),
                 }
             } else {
                 Either::A(ok(ServiceResponse::from_err(
@@ -857,7 +857,7 @@ mod tests {
 
     #[test]
     fn test_named_file_content_length_headers() {
-        use actix_web::body::{MessageBody, ResponseBody};
+        // use actix_web::body::{MessageBody, ResponseBody};
 
         let mut srv = test::init_service(
             App::new().service(Files::new("test", ".").index_file("tests/test.binary")),
@@ -868,7 +868,7 @@ mod tests {
             .uri("/t%65st/tests/test.binary")
             .header(header::RANGE, "bytes=10-20")
             .to_request();
-        let response = test::call_service(&mut srv, request);
+        let _response = test::call_service(&mut srv, request);
 
         // let contentlength = response
         //     .headers()
@@ -891,7 +891,7 @@ mod tests {
             .uri("/t%65st/tests/test.binary")
             // .no_default_headers()
             .to_request();
-        let response = test::call_service(&mut srv, request);
+        let _response = test::call_service(&mut srv, request);
 
         // let contentlength = response
         //     .headers()
@@ -939,7 +939,7 @@ mod tests {
             .method(Method::HEAD)
             .uri("/t%65st/tests/test.binary")
             .to_request();
-        let response = test::call_service(&mut srv, request);
+        let _response = test::call_service(&mut srv, request);
 
         // TODO: fix check
         // let contentlength = response
diff --git a/actix-files/src/range.rs b/actix-files/src/range.rs
index d97a35e7e..47673b0b0 100644
--- a/actix-files/src/range.rs
+++ b/actix-files/src/range.rs
@@ -5,7 +5,7 @@ pub struct HttpRange {
     pub length: u64,
 }
 
-static PREFIX: &'static str = "bytes=";
+static PREFIX: &str = "bytes=";
 const PREFIX_LEN: usize = 6;
 
 impl HttpRange {
diff --git a/actix-framed/src/helpers.rs b/actix-framed/src/helpers.rs
index 5e84ad88c..b343301f3 100644
--- a/actix-framed/src/helpers.rs
+++ b/actix-framed/src/helpers.rs
@@ -3,7 +3,7 @@ use actix_service::{NewService, Service};
 use futures::{Future, Poll};
 
 pub(crate) type BoxedHttpService<Req> = Box<
-    Service<
+    dyn Service<
         Request = Req,
         Response = (),
         Error = Error,
@@ -12,7 +12,7 @@ pub(crate) type BoxedHttpService<Req> = Box<
 >;
 
 pub(crate) type BoxedHttpNewService<Req> = Box<
-    NewService<
+    dyn NewService<
         Config = (),
         Request = Req,
         Response = (),
diff --git a/actix-http/src/builder.rs b/actix-http/src/builder.rs
index b6967d94d..bab0f5e1e 100644
--- a/actix-http/src/builder.rs
+++ b/actix-http/src/builder.rs
@@ -26,7 +26,7 @@ pub struct HttpServiceBuilder<T, S, X = ExpectHandler, U = UpgradeHandler<T>> {
     client_disconnect: u64,
     expect: X,
     upgrade: Option<U>,
-    on_connect: Option<Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     _t: PhantomData<(T, S)>,
 }
 
diff --git a/actix-http/src/client/connection.rs b/actix-http/src/client/connection.rs
index 2f3103d4e..36913c5f0 100644
--- a/actix-http/src/client/connection.rs
+++ b/actix-http/src/client/connection.rs
@@ -130,7 +130,7 @@ where
 
     type TunnelFuture = Either<
         Box<
-            Future<
+            dyn Future<
                 Item = (ResponseHead, Framed<Self::Io, ClientCodec>),
                 Error = SendRequestError,
             >,
@@ -192,7 +192,7 @@ where
     }
 
     type TunnelFuture = Box<
-        Future<
+        dyn Future<
             Item = (ResponseHead, Framed<Self::Io, ClientCodec>),
             Error = SendRequestError,
         >,
diff --git a/actix-http/src/cookie/secure/key.rs b/actix-http/src/cookie/secure/key.rs
index 8435ce3ab..39575c93f 100644
--- a/actix-http/src/cookie/secure/key.rs
+++ b/actix-http/src/cookie/secure/key.rs
@@ -6,7 +6,7 @@ use ring::rand::{SecureRandom, SystemRandom};
 use super::private::KEY_LEN as PRIVATE_KEY_LEN;
 use super::signed::KEY_LEN as SIGNED_KEY_LEN;
 
-static HKDF_DIGEST: &'static Algorithm = &SHA256;
+static HKDF_DIGEST: &Algorithm = &SHA256;
 const KEYS_INFO: &str = "COOKIE;SIGNED:HMAC-SHA256;PRIVATE:AEAD-AES-256-GCM";
 
 /// A cryptographic master key for use with `Signed` and/or `Private` jars.
diff --git a/actix-http/src/cookie/secure/private.rs b/actix-http/src/cookie/secure/private.rs
index e59743767..eb8e9beb1 100644
--- a/actix-http/src/cookie/secure/private.rs
+++ b/actix-http/src/cookie/secure/private.rs
@@ -10,7 +10,7 @@ use crate::cookie::{Cookie, CookieJar};
 
 // Keep these in sync, and keep the key len synced with the `private` docs as
 // well as the `KEYS_INFO` const in secure::Key.
-static ALGO: &'static Algorithm = &AES_256_GCM;
+static ALGO: &Algorithm = &AES_256_GCM;
 const NONCE_LEN: usize = 12;
 pub const KEY_LEN: usize = 32;
 
diff --git a/actix-http/src/cookie/secure/signed.rs b/actix-http/src/cookie/secure/signed.rs
index 1b1799cf4..36a277cd5 100644
--- a/actix-http/src/cookie/secure/signed.rs
+++ b/actix-http/src/cookie/secure/signed.rs
@@ -6,7 +6,7 @@ use crate::cookie::{Cookie, CookieJar};
 
 // Keep these in sync, and keep the key len synced with the `signed` docs as
 // well as the `KEYS_INFO` const in secure::Key.
-static HMAC_DIGEST: &'static Algorithm = &SHA256;
+static HMAC_DIGEST: &Algorithm = &SHA256;
 const BASE64_DIGEST_LEN: usize = 44;
 pub const KEY_LEN: usize = 32;
 
diff --git a/actix-http/src/error.rs b/actix-http/src/error.rs
index 4913c3d9d..368ee6dde 100644
--- a/actix-http/src/error.rs
+++ b/actix-http/src/error.rs
@@ -43,12 +43,12 @@ pub type Result<T, E = Error> = result::Result<T, E>;
 /// if you have access to an actix `Error` you can always get a
 /// `ResponseError` reference from it.
 pub struct Error {
-    cause: Box<ResponseError>,
+    cause: Box<dyn ResponseError>,
 }
 
 impl Error {
     /// Returns the reference to the underlying `ResponseError`.
-    pub fn as_response_error(&self) -> &ResponseError {
+    pub fn as_response_error(&self) -> &dyn ResponseError {
         self.cause.as_ref()
     }
 }
diff --git a/actix-http/src/extensions.rs b/actix-http/src/extensions.rs
index 148e4c18e..c6266f56e 100644
--- a/actix-http/src/extensions.rs
+++ b/actix-http/src/extensions.rs
@@ -6,7 +6,7 @@ use hashbrown::HashMap;
 #[derive(Default)]
 /// A type map of request extensions.
 pub struct Extensions {
-    map: HashMap<TypeId, Box<Any>>,
+    map: HashMap<TypeId, Box<dyn Any>>,
 }
 
 impl Extensions {
@@ -35,14 +35,14 @@ impl Extensions {
     pub fn get<T: 'static>(&self) -> Option<&T> {
         self.map
             .get(&TypeId::of::<T>())
-            .and_then(|boxed| (&**boxed as &(Any + 'static)).downcast_ref())
+            .and_then(|boxed| (&**boxed as &(dyn Any + 'static)).downcast_ref())
     }
 
     /// Get a mutable reference to a type previously inserted on this `Extensions`.
     pub fn get_mut<T: 'static>(&mut self) -> Option<&mut T> {
         self.map
             .get_mut(&TypeId::of::<T>())
-            .and_then(|boxed| (&mut **boxed as &mut (Any + 'static)).downcast_mut())
+            .and_then(|boxed| (&mut **boxed as &mut (dyn Any + 'static)).downcast_mut())
     }
 
     /// Remove a type from this `Extensions`.
@@ -50,7 +50,7 @@ impl Extensions {
     /// If a extension of this type existed, it will be returned.
     pub fn remove<T: 'static>(&mut self) -> Option<T> {
         self.map.remove(&TypeId::of::<T>()).and_then(|boxed| {
-            (boxed as Box<Any + 'static>)
+            (boxed as Box<dyn Any + 'static>)
                 .downcast()
                 .ok()
                 .map(|boxed| *boxed)
diff --git a/actix-http/src/h1/decoder.rs b/actix-http/src/h1/decoder.rs
index 12419d665..c7ef065a5 100644
--- a/actix-http/src/h1/decoder.rs
+++ b/actix-http/src/h1/decoder.rs
@@ -502,15 +502,15 @@ impl ChunkedState {
     fn read_size(rdr: &mut BytesMut, size: &mut u64) -> Poll<ChunkedState, io::Error> {
         let radix = 16;
         match byte!(rdr) {
-            b @ b'0'...b'9' => {
+            b @ b'0'..=b'9' => {
                 *size *= radix;
                 *size += u64::from(b - b'0');
             }
-            b @ b'a'...b'f' => {
+            b @ b'a'..=b'f' => {
                 *size *= radix;
                 *size += u64::from(b + 10 - b'a');
             }
-            b @ b'A'...b'F' => {
+            b @ b'A'..=b'F' => {
                 *size *= radix;
                 *size += u64::from(b + 10 - b'A');
             }
diff --git a/actix-http/src/h1/service.rs b/actix-http/src/h1/service.rs
index 108b7079e..89bf08e9b 100644
--- a/actix-http/src/h1/service.rs
+++ b/actix-http/src/h1/service.rs
@@ -26,7 +26,7 @@ pub struct H1Service<T, P, S, B, X = ExpectHandler, U = UpgradeHandler<T>> {
     cfg: ServiceConfig,
     expect: X,
     upgrade: Option<U>,
-    on_connect: Option<Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     _t: PhantomData<(T, P, B)>,
 }
 
@@ -108,7 +108,7 @@ where
     /// Set on connect callback.
     pub(crate) fn on_connect(
         mut self,
-        f: Option<Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+        f: Option<Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     ) -> Self {
         self.on_connect = f;
         self
@@ -174,7 +174,7 @@ where
     fut_upg: Option<U::Future>,
     expect: Option<X::Service>,
     upgrade: Option<U::Service>,
-    on_connect: Option<Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     cfg: Option<ServiceConfig>,
     _t: PhantomData<(T, P, B)>,
 }
@@ -233,7 +233,7 @@ pub struct H1ServiceHandler<T, P, S, B, X, U> {
     srv: CloneableService<S>,
     expect: CloneableService<X>,
     upgrade: Option<CloneableService<U>>,
-    on_connect: Option<Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     cfg: ServiceConfig,
     _t: PhantomData<(T, P, B)>,
 }
@@ -254,7 +254,7 @@ where
         srv: S,
         expect: X,
         upgrade: Option<U>,
-        on_connect: Option<Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+        on_connect: Option<Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     ) -> H1ServiceHandler<T, P, S, B, X, U> {
         H1ServiceHandler {
             srv: CloneableService::new(srv),
diff --git a/actix-http/src/h2/service.rs b/actix-http/src/h2/service.rs
index 487d5b6ab..e894cf660 100644
--- a/actix-http/src/h2/service.rs
+++ b/actix-http/src/h2/service.rs
@@ -27,7 +27,7 @@ use super::dispatcher::Dispatcher;
 pub struct H2Service<T, P, S, B> {
     srv: S,
     cfg: ServiceConfig,
-    on_connect: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     _t: PhantomData<(T, P, B)>,
 }
 
@@ -64,7 +64,7 @@ where
     /// Set on connect callback.
     pub(crate) fn on_connect(
         mut self,
-        f: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+        f: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     ) -> Self {
         self.on_connect = f;
         self
@@ -102,7 +102,7 @@ where
 pub struct H2ServiceResponse<T, P, S: NewService, B> {
     fut: <S::Future as IntoFuture>::Future,
     cfg: Option<ServiceConfig>,
-    on_connect: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     _t: PhantomData<(T, P, B)>,
 }
 
@@ -132,7 +132,7 @@ where
 pub struct H2ServiceHandler<T, P, S, B> {
     srv: CloneableService<S>,
     cfg: ServiceConfig,
-    on_connect: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     _t: PhantomData<(T, P, B)>,
 }
 
@@ -146,7 +146,7 @@ where
 {
     fn new(
         cfg: ServiceConfig,
-        on_connect: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+        on_connect: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
         srv: S,
     ) -> H2ServiceHandler<T, P, S, B> {
         H2ServiceHandler {
diff --git a/actix-http/src/service.rs b/actix-http/src/service.rs
index d37d377e5..be021b252 100644
--- a/actix-http/src/service.rs
+++ b/actix-http/src/service.rs
@@ -26,7 +26,7 @@ pub struct HttpService<T, P, S, B, X = h1::ExpectHandler, U = h1::UpgradeHandler
     cfg: ServiceConfig,
     expect: X,
     upgrade: Option<U>,
-    on_connect: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     _t: PhantomData<(T, P, B)>,
 }
 
@@ -140,7 +140,7 @@ where
     /// Set on connect callback.
     pub(crate) fn on_connect(
         mut self,
-        f: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+        f: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     ) -> Self {
         self.on_connect = f;
         self
@@ -196,7 +196,7 @@ pub struct HttpServiceResponse<T, P, S: NewService, B, X: NewService, U: NewServ
     fut_upg: Option<U::Future>,
     expect: Option<X::Service>,
     upgrade: Option<U::Service>,
-    on_connect: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     cfg: Option<ServiceConfig>,
     _t: PhantomData<(T, P, B)>,
 }
@@ -257,7 +257,7 @@ pub struct HttpServiceHandler<T, P, S, B, X, U> {
     expect: CloneableService<X>,
     upgrade: Option<CloneableService<U>>,
     cfg: ServiceConfig,
-    on_connect: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+    on_connect: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     _t: PhantomData<(T, P, B, X)>,
 }
 
@@ -278,7 +278,7 @@ where
         srv: S,
         expect: X,
         upgrade: Option<U>,
-        on_connect: Option<rc::Rc<Fn(&T) -> Box<dyn DataFactory>>>,
+        on_connect: Option<rc::Rc<dyn Fn(&T) -> Box<dyn DataFactory>>>,
     ) -> HttpServiceHandler<T, P, S, B, X, U> {
         HttpServiceHandler {
             cfg,
diff --git a/actix-http/src/ws/proto.rs b/actix-http/src/ws/proto.rs
index 9b51b9229..e14651a56 100644
--- a/actix-http/src/ws/proto.rs
+++ b/actix-http/src/ws/proto.rs
@@ -203,7 +203,7 @@ impl<T: Into<String>> From<(CloseCode, T)> for CloseReason {
     }
 }
 
-static WS_GUID: &'static str = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
+static WS_GUID: &str = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
 
 // TODO: hash is always same size, we dont need String
 pub fn hash_key(key: &[u8]) -> String {
diff --git a/actix-identity/src/lib.rs b/actix-identity/src/lib.rs
index 0ae58fe89..7216104eb 100644
--- a/actix-identity/src/lib.rs
+++ b/actix-identity/src/lib.rs
@@ -283,7 +283,7 @@ where
                                 res.request().extensions_mut().remove::<IdentityItem>();
 
                             if let Some(id) = id {
-                                return Either::A(
+                                Either::A(
                                     backend
                                         .to_response(id.id, id.changed, &mut res)
                                         .into_future()
@@ -291,7 +291,7 @@ where
                                             Ok(_) => Ok(res),
                                             Err(e) => Ok(res.error_response(e)),
                                         }),
-                                );
+                                )
                             } else {
                                 Either::B(ok(res))
                             }
diff --git a/actix-session/src/lib.rs b/actix-session/src/lib.rs
index 27ad2b876..2e9e51714 100644
--- a/actix-session/src/lib.rs
+++ b/actix-session/src/lib.rs
@@ -282,7 +282,7 @@ mod tests {
 
     #[test]
     fn purge_session() {
-        let mut req = test::TestRequest::default().to_srv_request();
+        let req = test::TestRequest::default().to_srv_request();
         let session = Session::get_session(&mut *req.extensions_mut());
         assert_eq!(session.0.borrow().status, SessionStatus::Unchanged);
         session.purge();
@@ -291,7 +291,7 @@ mod tests {
 
     #[test]
     fn renew_session() {
-        let mut req = test::TestRequest::default().to_srv_request();
+        let req = test::TestRequest::default().to_srv_request();
         let session = Session::get_session(&mut *req.extensions_mut());
         assert_eq!(session.0.borrow().status, SessionStatus::Unchanged);
         session.renew();
diff --git a/awc/src/connect.rs b/awc/src/connect.rs
index 8344abbdc..04f08ecdc 100644
--- a/awc/src/connect.rs
+++ b/awc/src/connect.rs
@@ -28,7 +28,7 @@ pub(crate) trait Connect {
         head: RequestHead,
         addr: Option<net::SocketAddr>,
     ) -> Box<
-        Future<
+        dyn Future<
             Item = (ResponseHead, Framed<BoxedSocket, ClientCodec>),
             Error = SendRequestError,
         >,
@@ -69,7 +69,7 @@ where
         head: RequestHead,
         addr: Option<net::SocketAddr>,
     ) -> Box<
-        Future<
+        dyn Future<
             Item = (ResponseHead, Framed<BoxedSocket, ClientCodec>),
             Error = SendRequestError,
         >,
@@ -93,21 +93,21 @@ where
 }
 
 trait AsyncSocket {
-    fn as_read(&self) -> &AsyncRead;
-    fn as_read_mut(&mut self) -> &mut AsyncRead;
-    fn as_write(&mut self) -> &mut AsyncWrite;
+    fn as_read(&self) -> &dyn AsyncRead;
+    fn as_read_mut(&mut self) -> &mut dyn AsyncRead;
+    fn as_write(&mut self) -> &mut dyn AsyncWrite;
 }
 
 struct Socket<T: AsyncRead + AsyncWrite>(T);
 
 impl<T: AsyncRead + AsyncWrite> AsyncSocket for Socket<T> {
-    fn as_read(&self) -> &AsyncRead {
+    fn as_read(&self) -> &dyn AsyncRead {
         &self.0
     }
-    fn as_read_mut(&mut self) -> &mut AsyncRead {
+    fn as_read_mut(&mut self) -> &mut dyn AsyncRead {
         &mut self.0
     }
-    fn as_write(&mut self) -> &mut AsyncWrite {
+    fn as_write(&mut self) -> &mut dyn AsyncWrite {
         &mut self.0
     }
 }
diff --git a/src/app.rs b/src/app.rs
index 3b063a841..f93859c7e 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -23,16 +23,17 @@ use crate::service::{
 };
 
 type HttpNewService = BoxedNewService<(), ServiceRequest, ServiceResponse, Error, ()>;
-type FnDataFactory = Box<Fn() -> Box<dyn Future<Item = Box<DataFactory>, Error = ()>>>;
+type FnDataFactory =
+    Box<dyn Fn() -> Box<dyn Future<Item = Box<dyn DataFactory>, Error = ()>>>;
 
 /// Application builder - structure that follows the builder pattern
 /// for building application instances.
 pub struct App<T, B> {
     endpoint: T,
-    services: Vec<Box<ServiceFactory>>,
+    services: Vec<Box<dyn ServiceFactory>>,
     default: Option<Rc<HttpNewService>>,
     factory_ref: Rc<RefCell<Option<AppRoutingFactory>>>,
-    data: Vec<Box<DataFactory>>,
+    data: Vec<Box<dyn DataFactory>>,
     data_factories: Vec<FnDataFactory>,
     config: AppConfigInner,
     external: Vec<ResourceDef>,
diff --git a/src/app_service.rs b/src/app_service.rs
index 6012dcda9..736c35010 100644
--- a/src/app_service.rs
+++ b/src/app_service.rs
@@ -18,14 +18,15 @@ use crate::request::{HttpRequest, HttpRequestPool};
 use crate::rmap::ResourceMap;
 use crate::service::{ServiceFactory, ServiceRequest, ServiceResponse};
 
-type Guards = Vec<Box<Guard>>;
+type Guards = Vec<Box<dyn Guard>>;
 type HttpService = BoxedService<ServiceRequest, ServiceResponse, Error>;
 type HttpNewService = BoxedNewService<(), ServiceRequest, ServiceResponse, Error, ()>;
 type BoxedResponse = Either<
     FutureResult<ServiceResponse, Error>,
     Box<dyn Future<Item = ServiceResponse, Error = Error>>,
 >;
-type FnDataFactory = Box<Fn() -> Box<dyn Future<Item = Box<DataFactory>, Error = ()>>>;
+type FnDataFactory =
+    Box<dyn Fn() -> Box<dyn Future<Item = Box<dyn DataFactory>, Error = ()>>>;
 
 /// Service factory to convert `Request` to a `ServiceRequest<S>`.
 /// It also executes data factories.
@@ -40,10 +41,10 @@ where
     >,
 {
     pub(crate) endpoint: T,
-    pub(crate) data: Rc<Vec<Box<DataFactory>>>,
+    pub(crate) data: Rc<Vec<Box<dyn DataFactory>>>,
     pub(crate) data_factories: Rc<Vec<FnDataFactory>>,
     pub(crate) config: RefCell<AppConfig>,
-    pub(crate) services: Rc<RefCell<Vec<Box<ServiceFactory>>>>,
+    pub(crate) services: Rc<RefCell<Vec<Box<dyn ServiceFactory>>>>,
     pub(crate) default: Option<Rc<HttpNewService>>,
     pub(crate) factory_ref: Rc<RefCell<Option<AppRoutingFactory>>>,
     pub(crate) external: RefCell<Vec<ResourceDef>>,
@@ -142,9 +143,9 @@ where
     endpoint_fut: T::Future,
     rmap: Rc<ResourceMap>,
     config: AppConfig,
-    data: Rc<Vec<Box<DataFactory>>>,
-    data_factories: Vec<Box<DataFactory>>,
-    data_factories_fut: Vec<Box<dyn Future<Item = Box<DataFactory>, Error = ()>>>,
+    data: Rc<Vec<Box<dyn DataFactory>>>,
+    data_factories: Vec<Box<dyn DataFactory>>,
+    data_factories_fut: Vec<Box<dyn Future<Item = Box<dyn DataFactory>, Error = ()>>>,
     _t: PhantomData<B>,
 }
 
diff --git a/src/config.rs b/src/config.rs
index 8de43f36c..bbbb3bb01 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -16,7 +16,7 @@ use crate::service::{
     ServiceResponse,
 };
 
-type Guards = Vec<Box<Guard>>;
+type Guards = Vec<Box<dyn Guard>>;
 type HttpNewService =
     boxed::BoxedNewService<(), ServiceRequest, ServiceResponse, Error, ()>;
 
@@ -31,7 +31,7 @@ pub struct AppService {
         Option<Guards>,
         Option<Rc<ResourceMap>>,
     )>,
-    service_data: Rc<Vec<Box<DataFactory>>>,
+    service_data: Rc<Vec<Box<dyn DataFactory>>>,
 }
 
 impl AppService {
@@ -39,7 +39,7 @@ impl AppService {
     pub(crate) fn new(
         config: AppConfig,
         default: Rc<HttpNewService>,
-        service_data: Rc<Vec<Box<DataFactory>>>,
+        service_data: Rc<Vec<Box<dyn DataFactory>>>,
     ) -> Self {
         AppService {
             config,
@@ -101,7 +101,7 @@ impl AppService {
     pub fn register_service<F, S>(
         &mut self,
         rdef: ResourceDef,
-        guards: Option<Vec<Box<Guard>>>,
+        guards: Option<Vec<Box<dyn Guard>>>,
         service: F,
         nested: Option<Rc<ResourceMap>>,
     ) where
@@ -174,8 +174,8 @@ impl Default for AppConfigInner {
 /// to set of external methods. This could help with
 /// modularization of big application configuration.
 pub struct ServiceConfig {
-    pub(crate) services: Vec<Box<ServiceFactory>>,
-    pub(crate) data: Vec<Box<DataFactory>>,
+    pub(crate) services: Vec<Box<dyn ServiceFactory>>,
+    pub(crate) data: Vec<Box<dyn DataFactory>>,
     pub(crate) external: Vec<ResourceDef>,
 }
 
diff --git a/src/guard.rs b/src/guard.rs
index 0990e876a..6522a9845 100644
--- a/src/guard.rs
+++ b/src/guard.rs
@@ -100,7 +100,7 @@ pub fn Any<F: Guard + 'static>(guard: F) -> AnyGuard {
 }
 
 /// Matches if any of supplied guards matche.
-pub struct AnyGuard(Vec<Box<Guard>>);
+pub struct AnyGuard(Vec<Box<dyn Guard>>);
 
 impl AnyGuard {
     /// Add guard to a list of guards to check
@@ -140,7 +140,7 @@ pub fn All<F: Guard + 'static>(guard: F) -> AllGuard {
 }
 
 /// Matches if all of supplied guards.
-pub struct AllGuard(Vec<Box<Guard>>);
+pub struct AllGuard(Vec<Box<dyn Guard>>);
 
 impl AllGuard {
     /// Add new guard to the list of guards to check
@@ -167,7 +167,7 @@ pub fn Not<F: Guard + 'static>(guard: F) -> NotGuard {
 }
 
 #[doc(hidden)]
-pub struct NotGuard(Box<Guard>);
+pub struct NotGuard(Box<dyn Guard>);
 
 impl Guard for NotGuard {
     fn check(&self, request: &RequestHead) -> bool {
diff --git a/src/middleware/errhandlers.rs b/src/middleware/errhandlers.rs
index afe7c72f1..5f73d4d7e 100644
--- a/src/middleware/errhandlers.rs
+++ b/src/middleware/errhandlers.rs
@@ -18,7 +18,7 @@ pub enum ErrorHandlerResponse<B> {
     Future(Box<dyn Future<Item = ServiceResponse<B>, Error = Error>>),
 }
 
-type ErrorHandler<B> = Fn(ServiceResponse<B>) -> Result<ErrorHandlerResponse<B>>;
+type ErrorHandler<B> = dyn Fn(ServiceResponse<B>) -> Result<ErrorHandlerResponse<B>>;
 
 /// `Middleware` for allowing custom handlers for responses.
 ///
diff --git a/src/middleware/logger.rs b/src/middleware/logger.rs
index 24aabb95d..9e332fb83 100644
--- a/src/middleware/logger.rs
+++ b/src/middleware/logger.rs
@@ -444,7 +444,9 @@ impl FormatText {
     }
 }
 
-pub(crate) struct FormatDisplay<'a>(&'a Fn(&mut Formatter) -> Result<(), fmt::Error>);
+pub(crate) struct FormatDisplay<'a>(
+    &'a dyn Fn(&mut Formatter) -> Result<(), fmt::Error>,
+);
 
 impl<'a> fmt::Display for FormatDisplay<'a> {
     fn fmt(&self, fmt: &mut Formatter) -> Result<(), fmt::Error> {
diff --git a/src/resource.rs b/src/resource.rs
index 0d66aa843..0af43a424 100644
--- a/src/resource.rs
+++ b/src/resource.rs
@@ -50,7 +50,7 @@ pub struct Resource<T = ResourceEndpoint> {
     name: Option<String>,
     routes: Vec<Route>,
     data: Option<Extensions>,
-    guards: Vec<Box<Guard>>,
+    guards: Vec<Box<dyn Guard>>,
     default: Rc<RefCell<Option<Rc<HttpNewService>>>>,
     factory_ref: Rc<RefCell<Option<ResourceFactory>>>,
 }
@@ -118,7 +118,7 @@ where
         self
     }
 
-    pub(crate) fn add_guards(mut self, guards: Vec<Box<Guard>>) -> Self {
+    pub(crate) fn add_guards(mut self, guards: Vec<Box<dyn Guard>>) -> Self {
         self.guards.extend(guards);
         self
     }
diff --git a/src/route.rs b/src/route.rs
index 591175d15..f4d303632 100644
--- a/src/route.rs
+++ b/src/route.rs
@@ -13,7 +13,7 @@ use crate::service::{ServiceRequest, ServiceResponse};
 use crate::HttpResponse;
 
 type BoxedRouteService<Req, Res> = Box<
-    Service<
+    dyn Service<
         Request = Req,
         Response = Res,
         Error = Error,
@@ -25,7 +25,7 @@ type BoxedRouteService<Req, Res> = Box<
 >;
 
 type BoxedRouteNewService<Req, Res> = Box<
-    NewService<
+    dyn NewService<
         Config = (),
         Request = Req,
         Response = Res,
@@ -42,7 +42,7 @@ type BoxedRouteNewService<Req, Res> = Box<
 /// If handler is not explicitly set, default *404 Not Found* handler is used.
 pub struct Route {
     service: BoxedRouteNewService<ServiceRequest, ServiceResponse>,
-    guards: Rc<Vec<Box<Guard>>>,
+    guards: Rc<Vec<Box<dyn Guard>>>,
 }
 
 impl Route {
@@ -56,7 +56,7 @@ impl Route {
         }
     }
 
-    pub(crate) fn take_guards(&mut self) -> Vec<Box<Guard>> {
+    pub(crate) fn take_guards(&mut self) -> Vec<Box<dyn Guard>> {
         std::mem::replace(Rc::get_mut(&mut self.guards).unwrap(), Vec::new())
     }
 }
@@ -84,7 +84,7 @@ type RouteFuture = Box<
 
 pub struct CreateRouteService {
     fut: RouteFuture,
-    guards: Rc<Vec<Box<Guard>>>,
+    guards: Rc<Vec<Box<dyn Guard>>>,
 }
 
 impl Future for CreateRouteService {
@@ -104,7 +104,7 @@ impl Future for CreateRouteService {
 
 pub struct RouteService {
     service: BoxedRouteService<ServiceRequest, ServiceResponse>,
-    guards: Rc<Vec<Box<Guard>>>,
+    guards: Rc<Vec<Box<dyn Guard>>>,
 }
 
 impl RouteService {
diff --git a/src/scope.rs b/src/scope.rs
index 714f0354a..760fee478 100644
--- a/src/scope.rs
+++ b/src/scope.rs
@@ -23,7 +23,7 @@ use crate::service::{
     ServiceFactory, ServiceFactoryWrapper, ServiceRequest, ServiceResponse,
 };
 
-type Guards = Vec<Box<Guard>>;
+type Guards = Vec<Box<dyn Guard>>;
 type HttpService = BoxedService<ServiceRequest, ServiceResponse, Error>;
 type HttpNewService = BoxedNewService<(), ServiceRequest, ServiceResponse, Error, ()>;
 type BoxedResponse = Either<
@@ -64,8 +64,8 @@ pub struct Scope<T = ScopeEndpoint> {
     endpoint: T,
     rdef: String,
     data: Option<Extensions>,
-    services: Vec<Box<ServiceFactory>>,
-    guards: Vec<Box<Guard>>,
+    services: Vec<Box<dyn ServiceFactory>>,
+    guards: Vec<Box<dyn Guard>>,
     default: Rc<RefCell<Option<Rc<HttpNewService>>>>,
     external: Vec<ResourceDef>,
     factory_ref: Rc<RefCell<Option<ScopeFactory>>>,
@@ -578,7 +578,7 @@ impl Future for ScopeFactoryResponse {
 
 pub struct ScopeService {
     data: Option<Rc<Extensions>>,
-    router: Router<HttpService, Vec<Box<Guard>>>,
+    router: Router<HttpService, Vec<Box<dyn Guard>>>,
     default: Option<HttpService>,
     _ready: Option<(ServiceRequest, ResourceInfo)>,
 }
diff --git a/src/service.rs b/src/service.rs
index 5863a100e..1d475cf15 100644
--- a/src/service.rs
+++ b/src/service.rs
@@ -407,7 +407,7 @@ impl<B: MessageBody> fmt::Debug for ServiceResponse<B> {
 pub struct WebService {
     rdef: String,
     name: Option<String>,
-    guards: Vec<Box<Guard>>,
+    guards: Vec<Box<dyn Guard>>,
 }
 
 impl WebService {
@@ -476,7 +476,7 @@ struct WebServiceImpl<T> {
     srv: T,
     rdef: String,
     name: Option<String>,
-    guards: Vec<Box<Guard>>,
+    guards: Vec<Box<dyn Guard>>,
 }
 
 impl<T> HttpServiceFactory for WebServiceImpl<T>
diff --git a/src/types/form.rs b/src/types/form.rs
index e61145b0d..42e6363f1 100644
--- a/src/types/form.rs
+++ b/src/types/form.rs
@@ -141,7 +141,7 @@ impl<T: fmt::Display> fmt::Display for Form<T> {
 #[derive(Clone)]
 pub struct FormConfig {
     limit: usize,
-    ehandler: Option<Rc<Fn(UrlencodedError, &HttpRequest) -> Error>>,
+    ehandler: Option<Rc<dyn Fn(UrlencodedError, &HttpRequest) -> Error>>,
 }
 
 impl FormConfig {
diff --git a/src/types/path.rs b/src/types/path.rs
index 2a6ce2879..a46575764 100644
--- a/src/types/path.rs
+++ b/src/types/path.rs
@@ -224,7 +224,7 @@ where
 /// ```
 #[derive(Clone)]
 pub struct PathConfig {
-    ehandler: Option<Arc<Fn(PathError, &HttpRequest) -> Error + Send + Sync>>,
+    ehandler: Option<Arc<dyn Fn(PathError, &HttpRequest) -> Error + Send + Sync>>,
 }
 
 impl PathConfig {
diff --git a/src/types/payload.rs b/src/types/payload.rs
index 8a634b4c9..f33e2e5f1 100644
--- a/src/types/payload.rs
+++ b/src/types/payload.rs
@@ -128,7 +128,7 @@ impl FromRequest for Bytes {
 
     #[inline]
     fn from_request(req: &HttpRequest, payload: &mut dev::Payload) -> Self::Future {
-        let mut tmp;
+        let tmp;
         let cfg = if let Some(cfg) = req.app_data::<PayloadConfig>() {
             cfg
         } else {
@@ -184,7 +184,7 @@ impl FromRequest for String {
 
     #[inline]
     fn from_request(req: &HttpRequest, payload: &mut dev::Payload) -> Self::Future {
-        let mut tmp;
+        let tmp;
         let cfg = if let Some(cfg) = req.app_data::<PayloadConfig>() {
             cfg
         } else {
diff --git a/src/types/query.rs b/src/types/query.rs
index 17240c0b5..2ad7106d0 100644
--- a/src/types/query.rs
+++ b/src/types/query.rs
@@ -192,7 +192,8 @@ where
 /// ```
 #[derive(Clone)]
 pub struct QueryConfig {
-    ehandler: Option<Arc<Fn(QueryPayloadError, &HttpRequest) -> Error + Send + Sync>>,
+    ehandler:
+        Option<Arc<dyn Fn(QueryPayloadError, &HttpRequest) -> Error + Send + Sync>>,
 }
 
 impl QueryConfig {