diff --git a/actix-http/examples/echo.rs b/actix-http/examples/echo.rs
index 90d768cb..176ac5c2 100644
--- a/actix-http/examples/echo.rs
+++ b/actix-http/examples/echo.rs
@@ -3,7 +3,7 @@ use std::{env, io};
 use actix_http::{Error, HttpService, Request, Response};
 use actix_server::Server;
 use bytes::BytesMut;
-use futures_util::StreamExt;
+use futures_util::StreamExt as _;
 use http::header::HeaderValue;
 use log::info;
 
diff --git a/actix-http/examples/echo2.rs b/actix-http/examples/echo2.rs
index bc932ce8..408a4011 100644
--- a/actix-http/examples/echo2.rs
+++ b/actix-http/examples/echo2.rs
@@ -4,7 +4,7 @@ use actix_http::http::HeaderValue;
 use actix_http::{Error, HttpService, Request, Response};
 use actix_server::Server;
 use bytes::BytesMut;
-use futures_util::StreamExt;
+use futures_util::StreamExt as _;
 use log::info;
 
 async fn handle_request(mut req: Request) -> Result<Response, Error> {
diff --git a/actix-http/src/client/h1proto.rs b/actix-http/src/client/h1proto.rs
index cd0b4573..75a3c1f3 100644
--- a/actix-http/src/client/h1proto.rs
+++ b/actix-http/src/client/h1proto.rs
@@ -7,7 +7,7 @@ use actix_codec::{AsyncRead, AsyncWrite, Framed, ReadBuf};
 use bytes::buf::BufMut;
 use bytes::{Bytes, BytesMut};
 use futures_core::Stream;
-use futures_util::{future::poll_fn, SinkExt};
+use futures_util::{future::poll_fn, SinkExt as _};
 
 use crate::error::PayloadError;
 use crate::h1;
@@ -198,7 +198,7 @@ where
         }
     }
 
-    SinkExt::flush(framed.get_mut()).await?;
+    framed.get_mut().flush().await?;
     Ok(())
 }
 
diff --git a/actix-http/src/h2/dispatcher.rs b/actix-http/src/h2/dispatcher.rs
index 958c761d..6e6cd5a2 100644
--- a/actix-http/src/h2/dispatcher.rs
+++ b/actix-http/src/h2/dispatcher.rs
@@ -5,8 +5,10 @@ use actix_codec::{AsyncRead, AsyncWrite};
 use actix_service::Service;
 use bytes::{Bytes, BytesMut};
 use futures_core::ready;
-use h2::server::{Connection, SendResponse};
-use h2::SendStream;
+use h2::{
+    server::{Connection, SendResponse},
+    SendStream,
+};
 use http::header::{HeaderValue, CONNECTION, CONTENT_LENGTH, DATE, TRANSFER_ENCODING};
 use log::{error, trace};
 
diff --git a/actix-http/src/h2/service.rs b/actix-http/src/h2/service.rs
index 1dc290e4..c6413956 100644
--- a/actix-http/src/h2/service.rs
+++ b/actix-http/src/h2/service.rs
@@ -13,7 +13,7 @@ use actix_service::{
 use bytes::Bytes;
 use futures_core::ready;
 use futures_util::future::ok;
-use h2::server::{self, Handshake};
+use h2::server::{handshake, Handshake};
 use log::error;
 
 use crate::body::MessageBody;
@@ -307,7 +307,7 @@ where
                 Some(self.cfg.clone()),
                 addr,
                 on_connect_data,
-                server::handshake(io),
+                handshake(io),
             ),
         }
     }
diff --git a/actix-http/src/service.rs b/actix-http/src/service.rs
index 89f3e3bb..1a06cec3 100644
--- a/actix-http/src/service.rs
+++ b/actix-http/src/service.rs
@@ -1,14 +1,19 @@
-use std::marker::PhantomData;
-use std::pin::Pin;
-use std::task::{Context, Poll};
-use std::{fmt, net, rc::Rc};
+use std::{
+    fmt,
+    future::Future,
+    marker::PhantomData,
+    net,
+    pin::Pin,
+    rc::Rc,
+    task::{Context, Poll},
+};
 
 use actix_codec::{AsyncRead, AsyncWrite, Framed};
 use actix_rt::net::TcpStream;
 use actix_service::{pipeline_factory, IntoServiceFactory, Service, ServiceFactory};
 use bytes::Bytes;
-use futures_core::{ready, Future};
-use h2::server::{self, Handshake};
+use futures_core::ready;
+use h2::server::{handshake, Handshake};
 use pin_project::pin_project;
 
 use crate::body::MessageBody;
@@ -562,7 +567,7 @@ where
         match proto {
             Protocol::Http2 => HttpServiceHandlerResponse {
                 state: State::H2Handshake(Some((
-                    server::handshake(io),
+                    handshake(io),
                     self.cfg.clone(),
                     self.flow.clone(),
                     on_connect_data,
diff --git a/actix-http/src/time_parser.rs b/actix-http/src/time_parser.rs
index 46bf7303..fd82fd42 100644
--- a/actix-http/src/time_parser.rs
+++ b/actix-http/src/time_parser.rs
@@ -1,7 +1,7 @@
 use time::{Date, OffsetDateTime, PrimitiveDateTime};
 
 /// Attempt to parse a `time` string as one of either RFC 1123, RFC 850, or asctime.
-pub fn parse_http_date(time: &str) -> Option<PrimitiveDateTime> {
+pub(crate) fn parse_http_date(time: &str) -> Option<PrimitiveDateTime> {
     try_parse_rfc_1123(time)
         .or_else(|| try_parse_rfc_850(time))
         .or_else(|| try_parse_asctime(time))
diff --git a/actix-http/tests/test_client.rs b/actix-http/tests/test_client.rs
index a50f2404..758e3974 100644
--- a/actix-http/tests/test_client.rs
+++ b/actix-http/tests/test_client.rs
@@ -6,7 +6,7 @@ use actix_service::ServiceFactoryExt;
 use bytes::Bytes;
 use futures_util::{
     future::{self, ok},
-    StreamExt,
+    StreamExt as _,
 };
 
 const STR: &str = "Hello World Hello World Hello World Hello World Hello World \
diff --git a/actix-http/tests/test_openssl.rs b/actix-http/tests/test_openssl.rs
index d5ec645a..49a68a60 100644
--- a/actix-http/tests/test_openssl.rs
+++ b/actix-http/tests/test_openssl.rs
@@ -12,8 +12,11 @@ use actix_http::{body, Error, HttpService, Request, Response};
 use actix_http_test::test_server;
 use actix_service::{fn_service, ServiceFactoryExt};
 use bytes::{Bytes, BytesMut};
-use futures_util::future::{err, ok, ready};
-use futures_util::stream::{once, Stream, StreamExt};
+use futures_core::Stream;
+use futures_util::{
+    future::{err, ok, ready},
+    stream::{once, StreamExt as _},
+};
 use openssl::{
     pkey::PKey,
     ssl::{SslAcceptor, SslMethod},
diff --git a/actix-http/tests/test_rustls.rs b/actix-http/tests/test_rustls.rs
index 81edb5c1..7a3cb147 100644
--- a/actix-http/tests/test_rustls.rs
+++ b/actix-http/tests/test_rustls.rs
@@ -10,8 +10,9 @@ use actix_http_test::test_server;
 use actix_service::{fn_factory_with_config, fn_service};
 
 use bytes::{Bytes, BytesMut};
+use futures_core::Stream;
 use futures_util::future::{self, err, ok};
-use futures_util::stream::{once, Stream, StreamExt};
+use futures_util::stream::{once, StreamExt as _};
 use rustls::{
     internal::pemfile::{certs, pkcs8_private_keys},
     NoClientAuth, ServerConfig as RustlsServerConfig,
diff --git a/actix-http/tests/test_server.rs b/actix-http/tests/test_server.rs
index a4c1f92b..6d145400 100644
--- a/actix-http/tests/test_server.rs
+++ b/actix-http/tests/test_server.rs
@@ -7,7 +7,7 @@ use actix_rt::time::sleep;
 use actix_service::fn_service;
 use bytes::Bytes;
 use futures_util::future::{self, err, ok, ready, FutureExt};
-use futures_util::stream::{once, StreamExt};
+use futures_util::stream::{once, StreamExt as _};
 use regex::Regex;
 
 use actix_http::HttpMessage;
diff --git a/actix-http/tests/test_ws.rs b/actix-http/tests/test_ws.rs
index 7ed9b0df..3b90b4e5 100644
--- a/actix-http/tests/test_ws.rs
+++ b/actix-http/tests/test_ws.rs
@@ -12,7 +12,7 @@ use actix_utils::dispatcher::Dispatcher;
 use bytes::Bytes;
 use futures_util::future;
 use futures_util::task::{Context, Poll};
-use futures_util::{SinkExt, StreamExt};
+use futures_util::{SinkExt as _, StreamExt as _};
 
 struct WsService<T>(Arc<Mutex<(PhantomData<T>, Cell<bool>)>>);