diff --git a/examples/async-handlers/src/async_stream.rs b/examples/async-handlers/src/async_stream.rs
index ddc6ad6..ddf41f4 100644
--- a/examples/async-handlers/src/async_stream.rs
+++ b/examples/async-handlers/src/async_stream.rs
@@ -6,7 +6,7 @@ fn is_error() -> bool {
 use actix_web::{error, Error, HttpResponse};
 use futures::future::{result, Future};
 
-fn index() -> Result<Box<Future<Item = HttpResponse, Error = Error>>, Error> {
+fn index() -> Result<Box<dyn Future<Item = HttpResponse, Error = Error>>, Error> {
     if is_error() {
         Err(error::ErrorBadRequest("bad request"))
     } else {
diff --git a/examples/async-handlers/src/main.rs b/examples/async-handlers/src/main.rs
index 05a4ff4..ef4e1a5 100644
--- a/examples/async-handlers/src/main.rs
+++ b/examples/async-handlers/src/main.rs
@@ -4,13 +4,13 @@ pub mod stream;
 use actix_web::{Error, HttpResponse};
 use futures::future::{ok, Future};
 
-fn index() -> Box<Future<Item = HttpResponse, Error = Error>> {
+fn index() -> Box<dyn Future<Item = HttpResponse, Error = Error>> {
     Box::new(ok::<_, Error>(
         HttpResponse::Ok().content_type("text/html").body("Hello!"),
     ))
 }
 
-fn index2() -> Box<Future<Item = &'static str, Error = Error>> {
+fn index2() -> Box<dyn Future<Item = &'static str, Error = Error>> {
     Box::new(ok::<_, Error>("Welcome!"))
 }
 
diff --git a/examples/either/src/main.rs b/examples/either/src/main.rs
index 3c6af05..75837fe 100644
--- a/examples/either/src/main.rs
+++ b/examples/either/src/main.rs
@@ -3,7 +3,7 @@ use actix_web::{Either, Error, HttpResponse};
 use futures::future::{ok, Future};
 
 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() {
diff --git a/examples/middleware/src/main.rs b/examples/middleware/src/main.rs
index 22ed711..91b7d25 100644
--- a/examples/middleware/src/main.rs
+++ b/examples/middleware/src/main.rs
@@ -49,7 +49,7 @@ 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/examples/requests/src/streaming.rs b/examples/requests/src/streaming.rs
index a219d4a..9f4ab33 100644
--- a/examples/requests/src/streaming.rs
+++ b/examples/requests/src/streaming.rs
@@ -2,7 +2,7 @@
 use actix_web::{error, web, Error, HttpResponse};
 use futures::{future::result, Future, Stream};
 
-pub fn index(payload: web::Payload) -> Box<Future<Item = HttpResponse, Error = Error>> {
+pub fn index(payload: web::Payload) -> Box<dyn Future<Item = HttpResponse, Error = Error>> {
     Box::new(
         payload
             .from_err()