diff --git a/actix-cors/src/lib.rs b/actix-cors/src/lib.rs
index 5d0d013e3..ea1eb383b 100644
--- a/actix-cors/src/lib.rs
+++ b/actix-cors/src/lib.rs
@@ -681,7 +681,7 @@ where
     type Error = Error;
     type Future = Either<
         FutureResult<Self::Response, Error>,
-        Either<S::Future, Box<Future<Item = Self::Response, Error = Error>>>,
+        Either<S::Future, Box<dyn Future<Item = Self::Response, Error = Error>>>,
     >;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
diff --git a/actix-files/src/lib.rs b/actix-files/src/lib.rs
index 8e87f7d89..82abb9990 100644
--- a/actix-files/src/lib.rs
+++ b/actix-files/src/lib.rs
@@ -50,7 +50,7 @@ pub struct ChunkedReadFile {
     size: u64,
     offset: u64,
     file: Option<File>,
-    fut: Option<Box<Future<Item = (File, Bytes), Error = BlockingError<io::Error>>>>,
+    fut: Option<Box<dyn Future<Item = (File, Bytes), Error = BlockingError<io::Error>>>>,
     counter: u64,
 }
 
@@ -370,7 +370,7 @@ impl NewService for Files {
     type Error = Error;
     type Service = FilesService;
     type InitError = ();
-    type Future = Box<Future<Item = Self::Service, Error = Self::InitError>>;
+    type Future = Box<dyn Future<Item = Self::Service, Error = Self::InitError>>;
 
     fn new_service(&self, _: &()) -> Self::Future {
         let mut srv = FilesService {
@@ -416,7 +416,7 @@ impl FilesService {
         req: ServiceRequest,
     ) -> Either<
         FutureResult<ServiceResponse, Error>,
-        Box<Future<Item = ServiceResponse, Error = Error>>,
+        Box<dyn Future<Item = ServiceResponse, Error = Error>>,
     > {
         log::debug!("Files: Failed to handle {}: {}", req.path(), e);
         if let Some(ref mut default) = self.default {
@@ -433,7 +433,7 @@ impl Service for FilesService {
     type Error = Error;
     type Future = Either<
         FutureResult<Self::Response, Self::Error>,
-        Box<Future<Item = Self::Response, Error = Self::Error>>,
+        Box<dyn Future<Item = Self::Response, Error = Self::Error>>,
     >;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
diff --git a/actix-framed/src/app.rs b/actix-framed/src/app.rs
index 297796bd1..a9d73a25c 100644
--- a/actix-framed/src/app.rs
+++ b/actix-framed/src/app.rs
@@ -13,7 +13,7 @@ use crate::helpers::{BoxedHttpNewService, BoxedHttpService, HttpNewService};
 use crate::request::FramedRequest;
 use crate::state::State;
 
-type BoxedResponse = Box<Future<Item = (), Error = Error>>;
+type BoxedResponse = Box<dyn Future<Item = (), Error = Error>>;
 
 pub trait HttpServiceFactory {
     type Factory: NewService;
@@ -61,7 +61,7 @@ impl<T: 'static, S: 'static> FramedApp<T, S> {
             Request = FramedRequest<T, S>,
             Response = (),
             Error = Error,
-            Future = Box<Future<Item = (), Error = Error>>,
+            Future = Box<dyn Future<Item = (), Error = Error>>,
         >,
     {
         let path = factory.path().to_string();
@@ -129,7 +129,7 @@ pub struct CreateService<T, S> {
 enum CreateServiceItem<T, S> {
     Future(
         Option<String>,
-        Box<Future<Item = BoxedHttpService<FramedRequest<T, S>>, Error = ()>>,
+        Box<dyn Future<Item = BoxedHttpService<FramedRequest<T, S>>, Error = ()>>,
     ),
     Service(String, BoxedHttpService<FramedRequest<T, S>>),
 }
diff --git a/actix-framed/src/helpers.rs b/actix-framed/src/helpers.rs
index 944b729d4..5e84ad88c 100644
--- a/actix-framed/src/helpers.rs
+++ b/actix-framed/src/helpers.rs
@@ -7,7 +7,7 @@ pub(crate) type BoxedHttpService<Req> = Box<
         Request = Req,
         Response = (),
         Error = Error,
-        Future = Box<Future<Item = (), Error = Error>>,
+        Future = Box<dyn Future<Item = (), Error = Error>>,
     >,
 >;
 
@@ -19,7 +19,7 @@ pub(crate) type BoxedHttpNewService<Req> = Box<
         Error = Error,
         InitError = (),
         Service = BoxedHttpService<Req>,
-        Future = Box<Future<Item = BoxedHttpService<Req>, Error = ()>>,
+        Future = Box<dyn Future<Item = BoxedHttpService<Req>, Error = ()>>,
     >,
 >;
 
@@ -30,7 +30,7 @@ where
     T: NewService<Response = (), Error = Error>,
     T::Response: 'static,
     T::Future: 'static,
-    T::Service: Service<Future = Box<Future<Item = (), Error = Error>>> + 'static,
+    T::Service: Service<Future = Box<dyn Future<Item = (), Error = Error>>> + 'static,
     <T::Service as Service>::Future: 'static,
 {
     pub fn new(service: T) -> Self {
@@ -43,7 +43,7 @@ where
     T: NewService<Config = (), Response = (), Error = Error>,
     T::Request: 'static,
     T::Future: 'static,
-    T::Service: Service<Future = Box<Future<Item = (), Error = Error>>> + 'static,
+    T::Service: Service<Future = Box<dyn Future<Item = (), Error = Error>>> + 'static,
     <T::Service as Service>::Future: 'static,
 {
     type Config = ();
@@ -52,7 +52,7 @@ where
     type Error = Error;
     type InitError = ();
     type Service = BoxedHttpService<T::Request>;
-    type Future = Box<Future<Item = Self::Service, Error = ()>>;
+    type Future = Box<dyn Future<Item = Self::Service, Error = ()>>;
 
     fn new_service(&self, _: &()) -> Self::Future {
         Box::new(self.0.new_service(&()).map_err(|_| ()).and_then(|service| {
@@ -70,7 +70,7 @@ impl<T> Service for HttpServiceWrapper<T>
 where
     T: Service<
         Response = (),
-        Future = Box<Future<Item = (), Error = Error>>,
+        Future = Box<dyn Future<Item = (), Error = Error>>,
         Error = Error,
     >,
     T::Request: 'static,
@@ -78,7 +78,7 @@ where
     type Request = T::Request;
     type Response = ();
     type Error = Error;
-    type Future = Box<Future<Item = (), Error = Error>>;
+    type Future = Box<dyn Future<Item = (), Error = Error>>;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
         self.service.poll_ready()
diff --git a/actix-framed/src/route.rs b/actix-framed/src/route.rs
index c50401d6d..5beb24165 100644
--- a/actix-framed/src/route.rs
+++ b/actix-framed/src/route.rs
@@ -140,7 +140,7 @@ where
     type Request = FramedRequest<Io, S>;
     type Response = ();
     type Error = Error;
-    type Future = Box<Future<Item = (), Error = Error>>;
+    type Future = Box<dyn Future<Item = (), Error = Error>>;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
         Ok(Async::Ready(()))
diff --git a/actix-http/src/client/connection.rs b/actix-http/src/client/connection.rs
index 9354fca4a..2f3103d4e 100644
--- a/actix-http/src/client/connection.rs
+++ b/actix-http/src/client/connection.rs
@@ -94,7 +94,8 @@ where
     T: AsyncRead + AsyncWrite + 'static,
 {
     type Io = T;
-    type Future = Box<Future<Item = (ResponseHead, Payload), Error = SendRequestError>>;
+    type Future =
+        Box<dyn Future<Item = (ResponseHead, Payload), Error = SendRequestError>>;
 
     fn protocol(&self) -> Protocol {
         match self.io {
@@ -169,7 +170,8 @@ where
     B: AsyncRead + AsyncWrite + 'static,
 {
     type Io = EitherIo<A, B>;
-    type Future = Box<Future<Item = (ResponseHead, Payload), Error = SendRequestError>>;
+    type Future =
+        Box<dyn Future<Item = (ResponseHead, Payload), Error = SendRequestError>>;
 
     fn protocol(&self) -> Protocol {
         match self {
diff --git a/actix-identity/src/lib.rs b/actix-identity/src/lib.rs
index 6664df676..fe7216a01 100644
--- a/actix-identity/src/lib.rs
+++ b/actix-identity/src/lib.rs
@@ -261,7 +261,7 @@ where
     type Request = ServiceRequest;
     type Response = ServiceResponse<B>;
     type Error = Error;
-    type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
+    type Future = Box<dyn Future<Item = Self::Response, Error = Self::Error>>;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
         self.service.borrow_mut().poll_ready()
diff --git a/actix-session/src/cookie.rs b/actix-session/src/cookie.rs
index 8627ce4c8..87fc0b164 100644
--- a/actix-session/src/cookie.rs
+++ b/actix-session/src/cookie.rs
@@ -309,7 +309,7 @@ where
     type Request = ServiceRequest;
     type Response = ServiceResponse<B>;
     type Error = S::Error;
-    type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
+    type Future = Box<dyn Future<Item = Self::Response, Error = Self::Error>>;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
         self.service.poll_ready()
diff --git a/awc/src/connect.rs b/awc/src/connect.rs
index 4b564d777..8344abbdc 100644
--- a/awc/src/connect.rs
+++ b/awc/src/connect.rs
@@ -20,7 +20,7 @@ pub(crate) trait Connect {
         head: RequestHead,
         body: Body,
         addr: Option<net::SocketAddr>,
-    ) -> Box<Future<Item = ClientResponse, Error = SendRequestError>>;
+    ) -> Box<dyn Future<Item = ClientResponse, Error = SendRequestError>>;
 
     /// Send request, returns Response and Framed
     fn open_tunnel(
@@ -49,7 +49,7 @@ where
         head: RequestHead,
         body: Body,
         addr: Option<net::SocketAddr>,
-    ) -> Box<Future<Item = ClientResponse, Error = SendRequestError>> {
+    ) -> Box<dyn Future<Item = ClientResponse, Error = SendRequestError>> {
         Box::new(
             self.0
                 // connect to the host
diff --git a/src/app_service.rs b/src/app_service.rs
index 8ab9b352a..6012dcda9 100644
--- a/src/app_service.rs
+++ b/src/app_service.rs
@@ -23,7 +23,7 @@ type HttpService = BoxedService<ServiceRequest, ServiceResponse, Error>;
 type HttpNewService = BoxedNewService<(), ServiceRequest, ServiceResponse, Error, ()>;
 type BoxedResponse = Either<
     FutureResult<ServiceResponse, Error>,
-    Box<Future<Item = ServiceResponse, Error = Error>>,
+    Box<dyn Future<Item = ServiceResponse, Error = Error>>,
 >;
 type FnDataFactory = Box<Fn() -> Box<dyn Future<Item = Box<DataFactory>, Error = ()>>>;
 
@@ -297,14 +297,14 @@ impl NewService for AppRoutingFactory {
     }
 }
 
-type HttpServiceFut = Box<Future<Item = HttpService, Error = ()>>;
+type HttpServiceFut = Box<dyn Future<Item = HttpService, Error = ()>>;
 
 /// Create app service
 #[doc(hidden)]
 pub struct AppRoutingFactoryResponse {
     fut: Vec<CreateAppRoutingItem>,
     default: Option<HttpService>,
-    default_fut: Option<Box<Future<Item = HttpService, Error = ()>>>,
+    default_fut: Option<Box<dyn Future<Item = HttpService, Error = ()>>>,
 }
 
 enum CreateAppRoutingItem {
diff --git a/src/extract.rs b/src/extract.rs
index 17b5cb40c..1687973ac 100644
--- a/src/extract.rs
+++ b/src/extract.rs
@@ -94,7 +94,7 @@ where
 {
     type Config = T::Config;
     type Error = Error;
-    type Future = Box<Future<Item = Option<T>, Error = Error>>;
+    type Future = Box<dyn Future<Item = Option<T>, Error = Error>>;
 
     #[inline]
     fn from_request(req: &HttpRequest, payload: &mut Payload) -> Self::Future {
@@ -165,7 +165,7 @@ where
 {
     type Config = T::Config;
     type Error = Error;
-    type Future = Box<Future<Item = Result<T, T::Error>, Error = Error>>;
+    type Future = Box<dyn Future<Item = Result<T, T::Error>, Error = Error>>;
 
     #[inline]
     fn from_request(req: &HttpRequest, payload: &mut Payload) -> Self::Future {
diff --git a/src/middleware/defaultheaders.rs b/src/middleware/defaultheaders.rs
index bddcdd552..ab2d36c2c 100644
--- a/src/middleware/defaultheaders.rs
+++ b/src/middleware/defaultheaders.rs
@@ -119,7 +119,7 @@ where
     type Request = ServiceRequest;
     type Response = ServiceResponse<B>;
     type Error = Error;
-    type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
+    type Future = Box<dyn Future<Item = Self::Response, Error = Self::Error>>;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
         self.service.poll_ready()
diff --git a/src/middleware/errhandlers.rs b/src/middleware/errhandlers.rs
index ac166e0eb..afe7c72f1 100644
--- a/src/middleware/errhandlers.rs
+++ b/src/middleware/errhandlers.rs
@@ -15,7 +15,7 @@ pub enum ErrorHandlerResponse<B> {
     /// New http response got generated
     Response(ServiceResponse<B>),
     /// Result is a future that resolves to a new http response
-    Future(Box<Future<Item = ServiceResponse<B>, Error = Error>>),
+    Future(Box<dyn Future<Item = ServiceResponse<B>, Error = Error>>),
 }
 
 type ErrorHandler<B> = Fn(ServiceResponse<B>) -> Result<ErrorHandlerResponse<B>>;
@@ -117,7 +117,7 @@ where
     type Request = ServiceRequest;
     type Response = ServiceResponse<B>;
     type Error = Error;
-    type Future = Box<Future<Item = Self::Response, Error = Self::Error>>;
+    type Future = Box<dyn Future<Item = Self::Response, Error = Self::Error>>;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
         self.service.poll_ready()
diff --git a/src/resource.rs b/src/resource.rs
index c2691eebe..d09beb27b 100644
--- a/src/resource.rs
+++ b/src/resource.rs
@@ -245,7 +245,7 @@ where
     /// ```rust
     /// # use actix_web::*;
     /// # use futures::future::Future;
-    /// # fn index(req: HttpRequest) -> Box<Future<Item=HttpResponse, Error=Error>> {
+    /// # fn index(req: HttpRequest) -> Box<dyn Future<Item=HttpResponse, Error=Error>> {
     /// #     unimplemented!()
     /// # }
     /// App::new().service(web::resource("/").route(web::route().to_async(index)));
@@ -478,7 +478,7 @@ pub struct CreateResourceService {
     fut: Vec<CreateRouteServiceItem>,
     data: Option<Rc<Extensions>>,
     default: Option<HttpService>,
-    default_fut: Option<Box<Future<Item = HttpService, Error = ()>>>,
+    default_fut: Option<Box<dyn Future<Item = HttpService, Error = ()>>>,
 }
 
 impl Future for CreateResourceService {
@@ -542,7 +542,7 @@ impl Service for ResourceService {
     type Error = Error;
     type Future = Either<
         FutureResult<ServiceResponse, Error>,
-        Box<Future<Item = ServiceResponse, Error = Error>>,
+        Box<dyn Future<Item = ServiceResponse, Error = Error>>,
     >;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
diff --git a/src/responder.rs b/src/responder.rs
index 39927c78f..4988ad5bc 100644
--- a/src/responder.rs
+++ b/src/responder.rs
@@ -337,7 +337,7 @@ impl<T: Responder> Future for CustomResponderFut<T> {
 /// use actix_web::{Either, Error, HttpResponse};
 ///
 /// type RegisterResult =
-///     Either<HttpResponse, Box<Future<Item = HttpResponse, Error = Error>>>;
+///     Either<HttpResponse, Box<dyn Future<Item = HttpResponse, Error = Error>>>;
 ///
 /// fn index() -> RegisterResult {
 ///     if is_a_variant() {
@@ -411,13 +411,13 @@ where
     }
 }
 
-impl<I, E> Responder for Box<Future<Item = I, Error = E>>
+impl<I, E> Responder for Box<dyn Future<Item = I, Error = E>>
 where
     I: Responder + 'static,
     E: Into<Error> + 'static,
 {
     type Error = Error;
-    type Future = Box<Future<Item = Response, Error = Error>>;
+    type Future = Box<dyn Future<Item = Response, Error = Error>>;
 
     #[inline]
     fn respond_to(self, req: &HttpRequest) -> Self::Future {
diff --git a/src/route.rs b/src/route.rs
index 660b82002..591175d15 100644
--- a/src/route.rs
+++ b/src/route.rs
@@ -19,7 +19,7 @@ type BoxedRouteService<Req, Res> = Box<
         Error = Error,
         Future = Either<
             FutureResult<Res, Error>,
-            Box<Future<Item = Res, Error = Error>>,
+            Box<dyn Future<Item = Res, Error = Error>>,
         >,
     >,
 >;
@@ -32,7 +32,7 @@ type BoxedRouteNewService<Req, Res> = Box<
         Error = Error,
         InitError = (),
         Service = BoxedRouteService<Req, Res>,
-        Future = Box<Future<Item = BoxedRouteService<Req, Res>, Error = ()>>,
+        Future = Box<dyn Future<Item = BoxedRouteService<Req, Res>, Error = ()>>,
     >,
 >;
 
@@ -78,8 +78,9 @@ impl NewService for Route {
     }
 }
 
-type RouteFuture =
-    Box<Future<Item = BoxedRouteService<ServiceRequest, ServiceResponse>, Error = ()>>;
+type RouteFuture = Box<
+    dyn Future<Item = BoxedRouteService<ServiceRequest, ServiceResponse>, Error = ()>,
+>;
 
 pub struct CreateRouteService {
     fut: RouteFuture,
@@ -123,7 +124,7 @@ impl Service for RouteService {
     type Error = Error;
     type Future = Either<
         FutureResult<Self::Response, Self::Error>,
-        Box<Future<Item = Self::Response, Error = Self::Error>>,
+        Box<dyn Future<Item = Self::Response, Error = Self::Error>>,
     >;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
@@ -317,7 +318,7 @@ where
     type Error = Error;
     type InitError = ();
     type Service = BoxedRouteService<ServiceRequest, Self::Response>;
-    type Future = Box<Future<Item = Self::Service, Error = Self::InitError>>;
+    type Future = Box<dyn Future<Item = Self::Service, Error = Self::InitError>>;
 
     fn new_service(&self, _: &()) -> Self::Future {
         Box::new(
@@ -351,7 +352,7 @@ where
     type Error = Error;
     type Future = Either<
         FutureResult<Self::Response, Self::Error>,
-        Box<Future<Item = Self::Response, Error = Self::Error>>,
+        Box<dyn Future<Item = Self::Response, Error = Self::Error>>,
     >;
 
     fn poll_ready(&mut self) -> Poll<(), Self::Error> {
diff --git a/src/scope.rs b/src/scope.rs
index 400da668d..99afd7d16 100644
--- a/src/scope.rs
+++ b/src/scope.rs
@@ -28,7 +28,7 @@ type HttpService = BoxedService<ServiceRequest, ServiceResponse, Error>;
 type HttpNewService = BoxedNewService<(), ServiceRequest, ServiceResponse, Error, ()>;
 type BoxedResponse = Either<
     FutureResult<ServiceResponse, Error>,
-    Box<Future<Item = ServiceResponse, Error = Error>>,
+    Box<dyn Future<Item = ServiceResponse, Error = Error>>,
 >;
 
 /// Resources scope.
@@ -503,10 +503,10 @@ pub struct ScopeFactoryResponse {
     fut: Vec<CreateScopeServiceItem>,
     data: Option<Rc<Extensions>>,
     default: Option<HttpService>,
-    default_fut: Option<Box<Future<Item = HttpService, Error = ()>>>,
+    default_fut: Option<Box<dyn Future<Item = HttpService, Error = ()>>>,
 }
 
-type HttpServiceFut = Box<Future<Item = HttpService, Error = ()>>;
+type HttpServiceFut = Box<dyn Future<Item = HttpService, Error = ()>>;
 
 enum CreateScopeServiceItem {
     Future(Option<ResourceDef>, Option<Guards>, HttpServiceFut),
diff --git a/src/types/form.rs b/src/types/form.rs
index 32d0edb69..e61145b0d 100644
--- a/src/types/form.rs
+++ b/src/types/form.rs
@@ -73,7 +73,7 @@ where
 {
     type Config = FormConfig;
     type Error = Error;
-    type Future = Box<Future<Item = Self, Error = Error>>;
+    type Future = Box<dyn Future<Item = Self, Error = Error>>;
 
     #[inline]
     fn from_request(req: &HttpRequest, payload: &mut Payload) -> Self::Future {
@@ -187,7 +187,7 @@ pub struct UrlEncoded<U> {
     length: Option<usize>,
     encoding: &'static Encoding,
     err: Option<UrlencodedError>,
-    fut: Option<Box<Future<Item = U, Error = UrlencodedError>>>,
+    fut: Option<Box<dyn Future<Item = U, Error = UrlencodedError>>>,
 }
 
 impl<U> UrlEncoded<U> {
diff --git a/src/types/json.rs b/src/types/json.rs
index de0ffb54c..f309a3c5a 100644
--- a/src/types/json.rs
+++ b/src/types/json.rs
@@ -169,7 +169,7 @@ where
     T: DeserializeOwned + 'static,
 {
     type Error = Error;
-    type Future = Box<Future<Item = Self, Error = Error>>;
+    type Future = Box<dyn Future<Item = Self, Error = Error>>;
     type Config = JsonConfig;
 
     #[inline]
@@ -290,7 +290,7 @@ pub struct JsonBody<U> {
     length: Option<usize>,
     stream: Option<Decompress<Payload>>,
     err: Option<JsonPayloadError>,
-    fut: Option<Box<Future<Item = U, Error = JsonPayloadError>>>,
+    fut: Option<Box<dyn Future<Item = U, Error = JsonPayloadError>>>,
 }
 
 impl<U> JsonBody<U>
diff --git a/src/types/payload.rs b/src/types/payload.rs
index a8e85e4f3..8a634b4c9 100644
--- a/src/types/payload.rs
+++ b/src/types/payload.rs
@@ -124,7 +124,7 @@ impl FromRequest for Bytes {
     type Config = PayloadConfig;
     type Error = Error;
     type Future =
-        Either<Box<Future<Item = Bytes, Error = Error>>, FutureResult<Bytes, Error>>;
+        Either<Box<dyn Future<Item = Bytes, Error = Error>>, FutureResult<Bytes, Error>>;
 
     #[inline]
     fn from_request(req: &HttpRequest, payload: &mut dev::Payload) -> Self::Future {
@@ -177,8 +177,10 @@ impl FromRequest for Bytes {
 impl FromRequest for String {
     type Config = PayloadConfig;
     type Error = Error;
-    type Future =
-        Either<Box<Future<Item = String, Error = Error>>, FutureResult<String, Error>>;
+    type Future = Either<
+        Box<dyn Future<Item = String, Error = Error>>,
+        FutureResult<String, Error>,
+    >;
 
     #[inline]
     fn from_request(req: &HttpRequest, payload: &mut dev::Payload) -> Self::Future {
@@ -291,7 +293,7 @@ pub struct HttpMessageBody {
     length: Option<usize>,
     stream: Option<dev::Decompress<dev::Payload>>,
     err: Option<PayloadError>,
-    fut: Option<Box<Future<Item = Bytes, Error = PayloadError>>>,
+    fut: Option<Box<dyn Future<Item = Bytes, Error = PayloadError>>>,
 }
 
 impl HttpMessageBody {