diff --git a/ntex/examples/echo.rs b/ntex/examples/echo.rs
index 7de444a1..6102520b 100644
--- a/ntex/examples/echo.rs
+++ b/ntex/examples/echo.rs
@@ -1,11 +1,11 @@
 use std::{env, io};
 
-use bytes::BytesMut;
 use futures::StreamExt;
 use log::info;
 use ntex::http::header::HeaderValue;
 use ntex::http::{HttpService, Request, Response};
 use ntex::server::Server;
+use ntex::util::BytesMut;
 
 #[ntex::main]
 async fn main() -> io::Result<()> {
diff --git a/ntex/examples/echo2.rs b/ntex/examples/echo2.rs
index 1fe2cdee..a37f27b9 100644
--- a/ntex/examples/echo2.rs
+++ b/ntex/examples/echo2.rs
@@ -1,11 +1,11 @@
 use std::{env, io};
 
-use bytes::BytesMut;
 use futures::StreamExt;
 use log::info;
 use ntex::http::header::HeaderValue;
 use ntex::http::{HttpService, Request, Response};
 use ntex::server::Server;
+use ntex::util::BytesMut;
 
 async fn handle_request(mut req: Request) -> Result<Response, io::Error> {
     let mut body = BytesMut::new();
diff --git a/ntex/src/framed/dispatcher.rs b/ntex/src/framed/dispatcher.rs
index 5bc8ce7c..f27cbdad 100644
--- a/ntex/src/framed/dispatcher.rs
+++ b/ntex/src/framed/dispatcher.rs
@@ -1,8 +1,7 @@
 //! Framed transport dispatcher
-use std::task::{Context, Poll};
 use std::{
-    cell::Cell, cell::RefCell, future::Future, pin::Pin, rc::Rc, time::Duration,
-    time::Instant,
+    cell::Cell, cell::RefCell, future::Future, pin::Pin, rc::Rc, task::Context,
+    task::Poll, time::Duration, time::Instant,
 };
 
 use crate::codec::{AsyncRead, AsyncWrite, Decoder, Encoder};
@@ -506,13 +505,13 @@ where
 
 #[cfg(test)]
 mod tests {
-    use bytes::Bytes;
     use rand::Rng;
     use std::sync::{atomic::AtomicBool, atomic::Ordering::Relaxed, Arc, Mutex};
 
     use crate::codec::BytesCodec;
     use crate::rt::time::sleep;
     use crate::testing::Io;
+    use crate::util::Bytes;
 
     use super::*;
 
diff --git a/ntex/src/framed/state.rs b/ntex/src/framed/state.rs
index d63e2d0f..18a67b47 100644
--- a/ntex/src/framed/state.rs
+++ b/ntex/src/framed/state.rs
@@ -1045,10 +1045,8 @@ impl Drop for OnDisconnect {
 
 #[cfg(test)]
 mod tests {
-    use bytes::Bytes;
-
     use super::*;
-    use crate::{codec::BytesCodec, testing::Io, util::lazy};
+    use crate::{codec::BytesCodec, testing::Io, util::lazy, util::Bytes};
 
     const BIN: &[u8] = b"GET /test HTTP/1\r\n\r\n";
     const TEXT: &str = "GET /test HTTP/1\r\n\r\n";
diff --git a/ntex/src/http/body.rs b/ntex/src/http/body.rs
index 7c7a700e..869176b9 100644
--- a/ntex/src/http/body.rs
+++ b/ntex/src/http/body.rs
@@ -2,8 +2,7 @@ use std::{
     error::Error, fmt, marker::PhantomData, mem, pin::Pin, task::Context, task::Poll,
 };
 
-use bytes::{Bytes, BytesMut};
-use futures_core::Stream;
+use crate::{util::Bytes, util::BytesMut, Stream};
 
 #[derive(Debug, PartialEq, Copy, Clone)]
 /// Body size hint
diff --git a/ntex/src/http/client/connection.rs b/ntex/src/http/client/connection.rs
index ead5694a..f7910d72 100644
--- a/ntex/src/http/client/connection.rs
+++ b/ntex/src/http/client/connection.rs
@@ -1,6 +1,5 @@
 use std::{fmt, future::Future, pin::Pin, time};
 
-use bytes::Bytes;
 use h2::client::SendRequest;
 
 use crate::codec::{AsyncRead, AsyncWrite, Framed};
@@ -9,7 +8,7 @@ use crate::http::h1::ClientCodec;
 use crate::http::message::{RequestHeadType, ResponseHead};
 use crate::http::payload::Payload;
 use crate::http::Protocol;
-use crate::util::{Either, Ready};
+use crate::util::{Bytes, Either, Ready};
 
 use super::error::SendRequestError;
 use super::pool::Acquired;
diff --git a/ntex/src/http/client/frozen.rs b/ntex/src/http/client/frozen.rs
index a354e652..67cc6a4a 100644
--- a/ntex/src/http/client/frozen.rs
+++ b/ntex/src/http/client/frozen.rs
@@ -1,13 +1,10 @@
 use std::{convert::TryFrom, error::Error, fmt, net, rc::Rc, time::Duration};
 
-use bytes::Bytes;
-use futures_core::Stream;
-use serde::Serialize;
-
 use crate::http::body::Body;
 use crate::http::error::HttpError;
 use crate::http::header::{self, HeaderMap, HeaderName, HeaderValue};
 use crate::http::{Method, RequestHead, RequestHeadType, Uri};
+use crate::{util::Bytes, Stream};
 
 use super::sender::SendClientRequest;
 use super::ClientConfig;
@@ -54,7 +51,7 @@ impl FrozenClientRequest {
     }
 
     /// Send a json body.
-    pub fn send_json<T: Serialize>(&self, value: &T) -> SendClientRequest {
+    pub fn send_json<T: serde::Serialize>(&self, value: &T) -> SendClientRequest {
         RequestHeadType::Rc(self.head.clone(), None).send_json(
             self.addr,
             self.response_decompress,
@@ -65,7 +62,7 @@ impl FrozenClientRequest {
     }
 
     /// Send an urlencoded body.
-    pub fn send_form<T: Serialize>(&self, value: &T) -> SendClientRequest {
+    pub fn send_form<T: serde::Serialize>(&self, value: &T) -> SendClientRequest {
         RequestHeadType::Rc(self.head.clone(), None).send_form(
             self.addr,
             self.response_decompress,
@@ -190,7 +187,7 @@ impl FrozenSendBuilder {
     }
 
     /// Complete request construction and send a json body.
-    pub fn send_json<T: Serialize>(self, value: &T) -> SendClientRequest {
+    pub fn send_json<T: serde::Serialize>(self, value: &T) -> SendClientRequest {
         if let Some(e) = self.err {
             return e.into();
         }
@@ -205,7 +202,7 @@ impl FrozenSendBuilder {
     }
 
     /// Complete request construction and send an urlencoded body.
-    pub fn send_form<T: Serialize>(self, value: &T) -> SendClientRequest {
+    pub fn send_form<T: serde::Serialize>(self, value: &T) -> SendClientRequest {
         if let Some(e) = self.err {
             return e.into();
         }
diff --git a/ntex/src/http/client/h1proto.rs b/ntex/src/http/client/h1proto.rs
index bdb5772c..a6b090e1 100644
--- a/ntex/src/http/client/h1proto.rs
+++ b/ntex/src/http/client/h1proto.rs
@@ -1,7 +1,5 @@
 use std::{io, io::Write, pin::Pin, task::Context, task::Poll, time};
 
-use bytes::{BufMut, Bytes, BytesMut};
-
 use crate::codec::{AsyncRead, AsyncWrite, Framed, ReadBuf};
 use crate::http::body::{BodySize, MessageBody};
 use crate::http::error::PayloadError;
@@ -9,7 +7,7 @@ use crate::http::h1;
 use crate::http::header::{HeaderMap, HeaderValue, HOST};
 use crate::http::message::{RequestHeadType, ResponseHead};
 use crate::http::payload::{Payload, PayloadStream};
-use crate::util::{next, poll_fn, send};
+use crate::util::{next, poll_fn, send, BufMut, Bytes, BytesMut};
 use crate::{Sink, Stream};
 
 use super::connection::{ConnectionLifetime, ConnectionType, IoConnection};
diff --git a/ntex/src/http/client/h2proto.rs b/ntex/src/http/client/h2proto.rs
index 389e8fef..7fb575ec 100644
--- a/ntex/src/http/client/h2proto.rs
+++ b/ntex/src/http/client/h2proto.rs
@@ -1,6 +1,5 @@
 use std::{convert::TryFrom, time};
 
-use bytes::Bytes;
 use h2::{client::SendRequest, SendStream};
 use http::header::{HeaderValue, CONNECTION, CONTENT_LENGTH, TRANSFER_ENCODING};
 use http::{request::Request, Method, Version};
@@ -10,7 +9,7 @@ use crate::http::body::{BodySize, MessageBody};
 use crate::http::header::HeaderMap;
 use crate::http::message::{RequestHeadType, ResponseHead};
 use crate::http::payload::Payload;
-use crate::util::poll_fn;
+use crate::util::{poll_fn, Bytes};
 
 use super::connection::{ConnectionType, IoConnection};
 use super::error::SendRequestError;
diff --git a/ntex/src/http/client/request.rs b/ntex/src/http/client/request.rs
index aef67c24..48d6368c 100644
--- a/ntex/src/http/client/request.rs
+++ b/ntex/src/http/client/request.rs
@@ -1,11 +1,8 @@
 use std::{convert::TryFrom, error::Error, fmt, net, rc::Rc, time::Duration};
 
-use bytes::Bytes;
-use futures_core::Stream;
-use serde::Serialize;
-
 #[cfg(feature = "cookie")]
 use coo_kie::{Cookie, CookieJar};
+use serde::Serialize;
 
 use crate::http::body::Body;
 use crate::http::error::HttpError;
@@ -13,6 +10,7 @@ use crate::http::header::{self, HeaderMap, HeaderName, HeaderValue};
 use crate::http::{
     uri, ConnectionType, Method, RequestHead, RequestHeadType, Uri, Version,
 };
+use crate::{util::Bytes, Stream};
 
 use super::error::{FreezeRequestError, InvalidUrl};
 use super::frozen::FrozenClientRequest;
diff --git a/ntex/src/http/client/response.rs b/ntex/src/http/client/response.rs
index 7d8ab89b..0f8618ba 100644
--- a/ntex/src/http/client/response.rs
+++ b/ntex/src/http/client/response.rs
@@ -2,8 +2,6 @@ use std::cell::{Ref, RefMut};
 use std::task::{Context, Poll};
 use std::{fmt, future::Future, marker::PhantomData, mem, pin::Pin};
 
-use bytes::{Bytes, BytesMut};
-use futures_core::Stream;
 use serde::de::DeserializeOwned;
 
 #[cfg(feature = "cookie")]
@@ -13,7 +11,8 @@ use crate::http::error::PayloadError;
 use crate::http::header::{AsName, HeaderValue, CONTENT_LENGTH};
 use crate::http::{HeaderMap, StatusCode, Version};
 use crate::http::{HttpMessage, Payload, ResponseHead};
-use crate::util::Extensions;
+use crate::util::{Bytes, BytesMut, Extensions};
+use crate::Stream;
 
 use super::error::JsonPayloadError;
 
diff --git a/ntex/src/http/client/sender.rs b/ntex/src/http/client/sender.rs
index 08088ed8..cfd11e99 100644
--- a/ntex/src/http/client/sender.rs
+++ b/ntex/src/http/client/sender.rs
@@ -1,9 +1,6 @@
 use std::task::{Context, Poll};
 use std::{convert::TryFrom, error::Error, future::Future, net, pin::Pin, time};
 
-use bytes::Bytes;
-use derive_more::From;
-use futures_core::Stream;
 use serde::Serialize;
 
 use crate::http::body::{Body, BodyStream};
@@ -11,6 +8,7 @@ use crate::http::error::HttpError;
 use crate::http::header::{self, HeaderMap, HeaderName, HeaderValue};
 use crate::http::RequestHeadType;
 use crate::rt::time::{sleep, Sleep};
+use crate::{util::Bytes, Stream};
 
 #[cfg(feature = "compress")]
 use crate::http::encoding::Decoder;
diff --git a/ntex/src/http/client/test.rs b/ntex/src/http/client/test.rs
index 56bb4560..bf5ba644 100644
--- a/ntex/src/http/client/test.rs
+++ b/ntex/src/http/client/test.rs
@@ -1,14 +1,13 @@
 //! Test helpers for ntex http client to use during testing.
 use std::convert::TryFrom;
 
-use bytes::Bytes;
-
 #[cfg(feature = "cookie")]
 use coo_kie::{Cookie, CookieJar};
 
 use crate::http::error::HttpError;
 use crate::http::header::{HeaderName, HeaderValue};
 use crate::http::{h1, Payload, ResponseHead, StatusCode, Version};
+use crate::util::Bytes;
 
 use super::ClientResponse;
 
diff --git a/ntex/src/http/encoding/decoder.rs b/ntex/src/http/encoding/decoder.rs
index 32329b86..28d3c5d2 100644
--- a/ntex/src/http/encoding/decoder.rs
+++ b/ntex/src/http/encoding/decoder.rs
@@ -1,14 +1,13 @@
 use std::{future::Future, io, io::Write, pin::Pin, task::Context, task::Poll};
 
 use brotli2::write::BrotliDecoder;
-use bytes::Bytes;
 use flate2::write::{GzDecoder, ZlibDecoder};
-use futures_core::Stream;
 
 use super::Writer;
 use crate::http::error::PayloadError;
 use crate::http::header::{ContentEncoding, HeaderMap, CONTENT_ENCODING};
 use crate::rt::task::{spawn_blocking, JoinHandle};
+use crate::{util::Bytes, Stream};
 
 const INPLACE: usize = 2049;
 
diff --git a/ntex/src/http/encoding/encoder.rs b/ntex/src/http/encoding/encoder.rs
index faace54c..acac56c5 100644
--- a/ntex/src/http/encoding/encoder.rs
+++ b/ntex/src/http/encoding/encoder.rs
@@ -2,13 +2,13 @@
 use std::{future::Future, io, io::Write, pin::Pin, task::Context, task::Poll};
 
 use brotli2::write::BrotliEncoder;
-use bytes::Bytes;
 use flate2::write::{GzEncoder, ZlibEncoder};
 
 use crate::http::body::{Body, BodySize, MessageBody, ResponseBody};
 use crate::http::header::{ContentEncoding, HeaderValue, CONTENT_ENCODING};
 use crate::http::{ResponseHead, StatusCode};
 use crate::rt::task::{spawn_blocking, JoinHandle};
+use crate::util::Bytes;
 
 use super::Writer;
 
diff --git a/ntex/src/http/encoding/mod.rs b/ntex/src/http/encoding/mod.rs
index 9eaf4104..9edfa3e5 100644
--- a/ntex/src/http/encoding/mod.rs
+++ b/ntex/src/http/encoding/mod.rs
@@ -1,7 +1,7 @@
 //! Content-Encoding support
 use std::io;
 
-use bytes::{Bytes, BytesMut};
+use crate::util::{Bytes, BytesMut};
 
 mod decoder;
 mod encoder;
diff --git a/ntex/src/http/h1/client.rs b/ntex/src/http/h1/client.rs
index eb019233..be6d142a 100644
--- a/ntex/src/http/h1/client.rs
+++ b/ntex/src/http/h1/client.rs
@@ -1,7 +1,6 @@
 use std::{cell::Cell, cell::RefCell, io};
 
 use bitflags::bitflags;
-use bytes::{Bytes, BytesMut};
 
 use crate::codec::{Decoder, Encoder};
 use crate::http::body::BodySize;
@@ -9,6 +8,7 @@ use crate::http::config::DateService;
 use crate::http::error::{ParseError, PayloadError};
 use crate::http::message::{ConnectionType, RequestHeadType, ResponseHead};
 use crate::http::{Method, Version};
+use crate::util::{Bytes, BytesMut};
 
 use super::decoder::{PayloadDecoder, PayloadItem, PayloadType};
 use super::{decoder, encoder, reserve_readbuf, Message, MessageType};
diff --git a/ntex/src/http/h1/codec.rs b/ntex/src/http/h1/codec.rs
index 88a5f06a..a9c5b575 100644
--- a/ntex/src/http/h1/codec.rs
+++ b/ntex/src/http/h1/codec.rs
@@ -1,8 +1,6 @@
 use std::{cell::Cell, fmt, io};
 
 use bitflags::bitflags;
-use bytes::BytesMut;
-use http::{Method, Version};
 
 use crate::codec::{Decoder, Encoder};
 use crate::http::body::BodySize;
@@ -11,6 +9,8 @@ use crate::http::error::ParseError;
 use crate::http::message::ConnectionType;
 use crate::http::request::Request;
 use crate::http::response::Response;
+use crate::http::{Method, Version};
+use crate::util::BytesMut;
 
 use super::{decoder, decoder::PayloadType, encoder, Message};
 
@@ -182,10 +182,9 @@ impl Encoder for Codec {
 
 #[cfg(test)]
 mod tests {
-    use bytes::{Bytes, BytesMut};
-
     use super::*;
     use crate::http::{h1::PayloadItem, HttpMessage, Method};
+    use crate::util::{Bytes, BytesMut};
 
     #[test]
     fn test_http_request_chunked_payload_and_next_message() {
diff --git a/ntex/src/http/h1/decoder.rs b/ntex/src/http/h1/decoder.rs
index e9323ded..d8db9fb4 100644
--- a/ntex/src/http/h1/decoder.rs
+++ b/ntex/src/http/h1/decoder.rs
@@ -2,7 +2,6 @@ use std::{
     cell::Cell, convert::TryFrom, marker::PhantomData, mem::MaybeUninit, task::Poll,
 };
 
-use bytes::{Buf, Bytes, BytesMut};
 use http::header::{HeaderName, HeaderValue};
 use http::{header, Method, StatusCode, Uri, Version};
 
@@ -11,6 +10,7 @@ use crate::http::error::ParseError;
 use crate::http::header::HeaderMap;
 use crate::http::message::{ConnectionType, ResponseHead};
 use crate::http::request::Request;
+use crate::util::{Buf, Bytes, BytesMut};
 
 use super::MAX_BUFFER_SIZE;
 
@@ -641,12 +641,11 @@ impl ChunkedState {
 
 #[cfg(test)]
 mod tests {
-    use bytes::{Bytes, BytesMut};
-
     use super::*;
     use crate::http::error::ParseError;
     use crate::http::header::{HeaderName, SET_COOKIE};
     use crate::http::{HttpMessage, Method, Version};
+    use crate::util::{Bytes, BytesMut};
 
     impl PayloadType {
         fn unwrap(self) -> PayloadDecoder {
diff --git a/ntex/src/http/h1/dispatcher.rs b/ntex/src/http/h1/dispatcher.rs
index 1235adc1..f25110f6 100644
--- a/ntex/src/http/h1/dispatcher.rs
+++ b/ntex/src/http/h1/dispatcher.rs
@@ -5,11 +5,10 @@ use std::{
     time,
 };
 
-use bytes::Bytes;
-
 use crate::codec::{AsyncRead, AsyncWrite};
 use crate::framed::{ReadTask, State as IoState, WriteTask};
 use crate::service::Service;
+use crate::util::Bytes;
 
 use crate::http;
 use crate::http::body::{BodySize, MessageBody, ResponseBody};
@@ -733,7 +732,6 @@ mod tests {
     use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
     use std::{cell::Cell, io, sync::Arc};
 
-    use bytes::{Bytes, BytesMut};
     use rand::Rng;
 
     use super::*;
@@ -741,7 +739,8 @@ mod tests {
     use crate::http::h1::{ClientCodec, ExpectHandler, UpgradeHandler};
     use crate::http::{body, Request, ResponseHead, StatusCode};
     use crate::service::{boxed, fn_service, IntoService};
-    use crate::{codec::Decoder, rt::time::sleep, testing::Io, util::lazy, util::next};
+    use crate::util::{lazy, next, Bytes, BytesMut};
+    use crate::{codec::Decoder, rt::time::sleep, testing::Io};
 
     const BUFFER_SIZE: usize = 32_768;
 
diff --git a/ntex/src/http/h1/encoder.rs b/ntex/src/http/h1/encoder.rs
index 1d1a648a..ec33a2ea 100644
--- a/ntex/src/http/h1/encoder.rs
+++ b/ntex/src/http/h1/encoder.rs
@@ -1,8 +1,5 @@
-use std::io::Write;
 use std::marker::PhantomData;
-use std::{cell::Cell, cmp, io, mem, ptr, ptr::copy_nonoverlapping, slice};
-
-use bytes::{BufMut, BytesMut};
+use std::{cell::Cell, cmp, io, io::Write, mem, ptr, ptr::copy_nonoverlapping, slice};
 
 use crate::http::body::BodySize;
 use crate::http::config::DateService;
@@ -11,6 +8,7 @@ use crate::http::helpers;
 use crate::http::message::{ConnectionType, RequestHeadType};
 use crate::http::response::Response;
 use crate::http::{HeaderMap, StatusCode, Version};
+use crate::util::{BufMut, BytesMut};
 
 const AVERAGE_HEADER_SIZE: usize = 30;
 
@@ -595,11 +593,10 @@ unsafe fn convert_usize(mut n: u64, bytes: &mut BytesMut) {
 mod tests {
     use std::rc::Rc;
 
-    use bytes::Bytes;
-
     use super::*;
     use crate::http::header::{HeaderValue, AUTHORIZATION};
     use crate::http::RequestHead;
+    use crate::util::Bytes;
 
     #[test]
     fn test_chunked_te() {
diff --git a/ntex/src/http/h1/mod.rs b/ntex/src/http/h1/mod.rs
index 8b8a63b5..4ebcc9b5 100644
--- a/ntex/src/http/h1/mod.rs
+++ b/ntex/src/http/h1/mod.rs
@@ -1,5 +1,5 @@
 //! HTTP/1 implementation
-use bytes::{Bytes, BytesMut};
+use crate::util::{Bytes, BytesMut};
 
 mod client;
 mod codec;
diff --git a/ntex/src/http/h1/payload.rs b/ntex/src/http/h1/payload.rs
index 2f7b7498..a8fb0902 100644
--- a/ntex/src/http/h1/payload.rs
+++ b/ntex/src/http/h1/payload.rs
@@ -3,11 +3,8 @@ use std::rc::{Rc, Weak};
 use std::task::{Context, Poll};
 use std::{cell::RefCell, collections::VecDeque, pin::Pin};
 
-use bytes::Bytes;
-use futures_core::Stream;
-
 use crate::http::error::PayloadError;
-use crate::task::LocalWaker;
+use crate::{task::LocalWaker, util::Bytes, Stream};
 
 /// max buffer size 32k
 const MAX_BUFFER_SIZE: usize = 32_768;
diff --git a/ntex/src/http/h2/dispatcher.rs b/ntex/src/http/h2/dispatcher.rs
index b335095f..320051b4 100644
--- a/ntex/src/http/h2/dispatcher.rs
+++ b/ntex/src/http/h2/dispatcher.rs
@@ -3,7 +3,6 @@ use std::{
     convert::TryFrom, future::Future, marker::PhantomData, net, pin::Pin, rc::Rc,
 };
 
-use bytes::{Bytes, BytesMut};
 use h2::server::{Connection, SendResponse};
 use h2::SendStream;
 use http::header::{HeaderValue, CONNECTION, CONTENT_LENGTH, DATE, TRANSFER_ENCODING};
@@ -19,6 +18,7 @@ use crate::http::payload::Payload;
 use crate::http::request::Request;
 use crate::http::response::Response;
 use crate::rt::time::{Instant, Sleep};
+use crate::util::{Bytes, BytesMut};
 use crate::Service;
 
 const CHUNK_SIZE: usize = 16_384;
diff --git a/ntex/src/http/h2/mod.rs b/ntex/src/http/h2/mod.rs
index 15b0b720..cc932f4d 100644
--- a/ntex/src/http/h2/mod.rs
+++ b/ntex/src/http/h2/mod.rs
@@ -2,8 +2,6 @@
 use std::pin::Pin;
 use std::task::{Context, Poll};
 
-use bytes::Bytes;
-use futures_core::Stream;
 use h2::RecvStream;
 
 mod dispatcher;
@@ -11,7 +9,7 @@ mod service;
 
 pub use self::dispatcher::Dispatcher;
 pub use self::service::H2Service;
-use crate::http::error::PayloadError;
+use crate::{http::error::PayloadError, util::Bytes, Stream};
 
 /// H2 receive stream
 #[derive(Debug)]
diff --git a/ntex/src/http/h2/service.rs b/ntex/src/http/h2/service.rs
index dbab947c..c9fbbdfb 100644
--- a/ntex/src/http/h2/service.rs
+++ b/ntex/src/http/h2/service.rs
@@ -1,7 +1,6 @@
 use std::task::{Context, Poll};
 use std::{future::Future, marker::PhantomData, net, pin::Pin, rc::Rc};
 
-use bytes::Bytes;
 use h2::server::{self, Handshake};
 use log::error;
 
@@ -13,6 +12,7 @@ use crate::http::helpers::DataFactory;
 use crate::http::request::Request;
 use crate::http::response::Response;
 use crate::rt::net::TcpStream;
+use crate::util::Bytes;
 use crate::{
     fn_factory, fn_service, pipeline_factory, IntoServiceFactory, Service,
     ServiceFactory,
diff --git a/ntex/src/http/helpers.rs b/ntex/src/http/helpers.rs
index 0a5e94fe..ec6b3aa1 100644
--- a/ntex/src/http/helpers.rs
+++ b/ntex/src/http/helpers.rs
@@ -1,9 +1,8 @@
 use std::io;
 
-use bytes::BytesMut;
 use percent_encoding::{AsciiSet, CONTROLS};
 
-use crate::util::Extensions;
+use crate::util::{BytesMut, Extensions};
 
 pub(crate) struct Writer<'a>(pub(crate) &'a mut BytesMut);
 
diff --git a/ntex/src/http/payload.rs b/ntex/src/http/payload.rs
index 4b6fc563..73c3e5b4 100644
--- a/ntex/src/http/payload.rs
+++ b/ntex/src/http/payload.rs
@@ -1,11 +1,9 @@
 use std::{fmt, mem, pin::Pin, task::Context, task::Poll};
 
-use bytes::Bytes;
-use futures_core::Stream;
 use h2::RecvStream;
 
-use super::error::PayloadError;
-use super::{h1, h2 as h2d};
+use super::{error::PayloadError, h1, h2 as h2d};
+use crate::{util::Bytes, Stream};
 
 /// Type represent boxed payload
 pub type PayloadStream = Pin<Box<dyn Stream<Item = Result<Bytes, PayloadError>>>>;
diff --git a/ntex/src/http/response.rs b/ntex/src/http/response.rs
index b04cd8e1..a9f35600 100644
--- a/ntex/src/http/response.rs
+++ b/ntex/src/http/response.rs
@@ -1,7 +1,6 @@
 //! Http response
 use std::{cell::Ref, cell::RefMut, convert::TryFrom, error::Error, fmt, str};
 
-use bytes::{Bytes, BytesMut};
 use serde::Serialize;
 
 #[cfg(feature = "cookie")]
@@ -12,7 +11,7 @@ use crate::http::error::{HttpError, ResponseError};
 use crate::http::header::{self, HeaderMap, HeaderName, HeaderValue};
 use crate::http::message::{ConnectionType, Message, ResponseHead};
 use crate::http::StatusCode;
-use crate::{util::Extensions, Stream};
+use crate::{util::Bytes, util::BytesMut, util::Extensions, Stream};
 
 /// An HTTP Response
 pub struct Response<B = Body> {
diff --git a/ntex/src/http/service.rs b/ntex/src/http/service.rs
index 111aa92d..85f49f8c 100644
--- a/ntex/src/http/service.rs
+++ b/ntex/src/http/service.rs
@@ -3,13 +3,13 @@ use std::{
     task::Poll,
 };
 
-use bytes::Bytes;
 use h2::server::{self, Handshake};
 
 use crate::codec::{AsyncRead, AsyncWrite};
 use crate::framed::State;
 use crate::rt::net::TcpStream;
 use crate::service::{pipeline_factory, IntoServiceFactory, Service, ServiceFactory};
+use crate::util::Bytes;
 
 use super::body::MessageBody;
 use super::builder::HttpServiceBuilder;
diff --git a/ntex/src/http/test.rs b/ntex/src/http/test.rs
index 371da34a..1d7c45cb 100644
--- a/ntex/src/http/test.rs
+++ b/ntex/src/http/test.rs
@@ -1,14 +1,13 @@
 //! Test helpers to use during testing.
 use std::{convert::TryFrom, io, net, str::FromStr, sync::mpsc, thread, time};
 
-use bytes::Bytes;
-
 #[cfg(feature = "cookie")]
 use coo_kie::{Cookie, CookieJar};
 
 use crate::codec::{AsyncRead, AsyncWrite, Framed};
 use crate::rt::{net::TcpStream, System};
 use crate::server::{Server, StreamServiceFactory};
+use crate::util::Bytes;
 
 use super::client::error::WsClientError;
 use super::client::{Client, ClientRequest, ClientResponse, Connector};
diff --git a/ntex/src/testing.rs b/ntex/src/testing.rs
index 694c6702..67513d94 100644
--- a/ntex/src/testing.rs
+++ b/ntex/src/testing.rs
@@ -3,11 +3,9 @@ use std::sync::{Arc, Mutex};
 use std::task::{Context, Poll, Waker};
 use std::{cmp, fmt, io, mem, pin::Pin, time};
 
-use bytes::BytesMut;
-
 use crate::codec::{AsyncRead, AsyncWrite, ReadBuf};
 use crate::rt::time::sleep;
-use crate::util::poll_fn;
+use crate::util::{poll_fn, BytesMut};
 
 #[derive(Default)]
 struct AtomicWaker(Arc<Mutex<RefCell<Option<Waker>>>>);
diff --git a/ntex/src/util/stream.rs b/ntex/src/util/stream.rs
index cc14c60d..5d16df21 100644
--- a/ntex/src/util/stream.rs
+++ b/ntex/src/util/stream.rs
@@ -161,15 +161,11 @@ where
 
 #[cfg(test)]
 mod tests {
-    use bytes::BytesMut;
-    use bytestring::ByteString;
     use std::{cell::Cell, rc::Rc, time::Duration};
 
     use super::*;
-    use crate::channel::mpsc;
-    use crate::codec::Encoder;
-    use crate::rt::time::sleep;
-    use crate::{util::next, ws};
+    use crate::util::{next, ByteString, BytesMut};
+    use crate::{channel::mpsc, codec::Encoder, rt::time::sleep, ws};
 
     #[crate::rt_test]
     async fn test_basic() {
diff --git a/ntex/src/web/app.rs b/ntex/src/web/app.rs
index 6245a55e..b79ec31d 100644
--- a/ntex/src/web/app.rs
+++ b/ntex/src/web/app.rs
@@ -625,8 +625,6 @@ where
 
 #[cfg(test)]
 mod tests {
-    use bytes::Bytes;
-
     use super::*;
     use crate::http::header::{self, HeaderValue};
     use crate::http::{Method, StatusCode};
@@ -634,7 +632,7 @@ mod tests {
     use crate::web::request::WebRequest;
     use crate::web::test::{call_service, init_service, read_body, TestRequest};
     use crate::web::{self, DefaultError, HttpRequest, HttpResponse};
-    use crate::{fn_service, Service};
+    use crate::{fn_service, util::Bytes, Service};
 
     #[crate::rt_test]
     async fn test_default_resource() {
diff --git a/ntex/src/web/config.rs b/ntex/src/web/config.rs
index ba2f016d..3a043a66 100644
--- a/ntex/src/web/config.rs
+++ b/ntex/src/web/config.rs
@@ -1,5 +1,4 @@
-use std::net::SocketAddr;
-use std::rc::Rc;
+use std::{net::SocketAddr, rc::Rc};
 
 use crate::router::ResourceDef;
 
@@ -128,13 +127,11 @@ impl<Err: ErrorRenderer> ServiceConfig<Err> {
 
 #[cfg(test)]
 mod tests {
-    use bytes::Bytes;
-
     use super::*;
     use crate::http::{Method, StatusCode};
     use crate::web::test::{call_service, init_service, read_body, TestRequest};
     use crate::web::{self, App, HttpRequest, HttpResponse};
-    use crate::Service;
+    use crate::{util::Bytes, Service};
 
     #[crate::rt_test]
     async fn test_configure_data() {
diff --git a/ntex/src/web/error.rs b/ntex/src/web/error.rs
index 05efa9ad..ce044bb6 100644
--- a/ntex/src/web/error.rs
+++ b/ntex/src/web/error.rs
@@ -1,7 +1,6 @@
 //! Web error
 use std::{cell::RefCell, fmt, io::Write, marker::PhantomData};
 
-use bytes::BytesMut;
 use derive_more::{Display, From};
 
 pub use http::Error as HttpError;
@@ -13,7 +12,7 @@ use super::{HttpRequest, HttpResponse};
 use crate::http::body::Body;
 use crate::http::helpers::Writer;
 use crate::http::{error, header, StatusCode};
-use crate::util::Either;
+use crate::util::{BytesMut, Either};
 
 pub use super::error_default::{DefaultError, Error};
 pub use crate::http::error::BlockingError;
diff --git a/ntex/src/web/error_default.rs b/ntex/src/web/error_default.rs
index cf7c445d..7c3069dc 100644
--- a/ntex/src/web/error_default.rs
+++ b/ntex/src/web/error_default.rs
@@ -1,9 +1,6 @@
 //! Web error
-use std::io::Write;
-use std::str::Utf8Error;
-use std::{fmt, io};
+use std::{fmt, io, io::Write, str::Utf8Error};
 
-use bytes::BytesMut;
 use serde::de::value::Error as DeError;
 use serde_json::error::Error as JsonError;
 use serde_urlencoded::ser::Error as FormError;
@@ -12,7 +9,7 @@ use crate::http::body::Body;
 use crate::http::helpers::Writer;
 use crate::http::ws::HandshakeError;
 use crate::http::{self, header, StatusCode};
-use crate::util::timeout::TimeoutError;
+use crate::util::{timeout::TimeoutError, BytesMut};
 
 use super::error::{self, ErrorContainer, ErrorRenderer, WebResponseError};
 use super::{HttpRequest, HttpResponse};
diff --git a/ntex/src/web/extract.rs b/ntex/src/web/extract.rs
index 17243f5d..5d042ea5 100644
--- a/ntex/src/web/extract.rs
+++ b/ntex/src/web/extract.rs
@@ -252,9 +252,8 @@ tuple_from_req!(TupleFromRequest10, (0, A), (1, B), (2, C), (3, D), (4, E), (5,
 
 #[cfg(test)]
 mod tests {
-    use bytes::Bytes;
-
     use crate::http::header;
+    use crate::util::Bytes;
     use crate::web::error::UrlencodedError;
     use crate::web::test::{from_request, TestRequest};
     use crate::web::types::{Form, FormConfig};
diff --git a/ntex/src/web/middleware/logger.rs b/ntex/src/web/middleware/logger.rs
index da9cf7bd..82a3d91f 100644
--- a/ntex/src/web/middleware/logger.rs
+++ b/ntex/src/web/middleware/logger.rs
@@ -3,13 +3,12 @@ use std::fmt::{self, Display};
 use std::task::{Context, Poll};
 use std::{convert::TryFrom, env, error::Error, future::Future, pin::Pin, rc::Rc, time};
 
-use bytes::Bytes;
 use regex::Regex;
 
 use crate::http::body::{Body, BodySize, MessageBody, ResponseBody};
 use crate::http::header::HeaderName;
 use crate::service::{Service, Transform};
-use crate::util::{Either, HashSet, Ready};
+use crate::util::{Bytes, Either, HashSet, Ready};
 use crate::web::dev::{WebRequest, WebResponse};
 use crate::web::HttpResponse;
 
diff --git a/ntex/src/web/responder.rs b/ntex/src/web/responder.rs
index a794484b..fad21e69 100644
--- a/ntex/src/web/responder.rs
+++ b/ntex/src/web/responder.rs
@@ -1,12 +1,10 @@
 use std::task::{Context, Poll};
 use std::{convert::TryFrom, future::Future, marker::PhantomData, pin::Pin};
 
-use bytes::{Bytes, BytesMut};
-
 use crate::http::error::HttpError;
 use crate::http::header::{HeaderMap, HeaderName, HeaderValue};
 use crate::http::{Response, ResponseBuilder, StatusCode};
-use crate::util::Either;
+use crate::util::{Bytes, BytesMut, Either};
 
 use super::error::{
     DefaultError, ErrorContainer, ErrorRenderer, InternalError, WebResponseError,
@@ -418,15 +416,13 @@ where
 
 #[cfg(test)]
 pub(crate) mod tests {
-    use bytes::{Bytes, BytesMut};
-
     use super::*;
     use crate::http::body::{Body, ResponseBody};
     use crate::http::header::{HeaderValue, CONTENT_TYPE};
     use crate::http::{Response as HttpResponse, StatusCode};
     use crate::web;
     use crate::web::test::{init_service, TestRequest};
-    use crate::Service;
+    use crate::{util::Bytes, util::BytesMut, Service};
 
     fn responder<T: Responder<DefaultError>>(
         responder: T,
diff --git a/ntex/src/web/route.rs b/ntex/src/web/route.rs
index b9004475..90175a6d 100644
--- a/ntex/src/web/route.rs
+++ b/ntex/src/web/route.rs
@@ -276,10 +276,9 @@ array_routes!(12, a, b, c, d, e, f, g, h, i, j, k, l);
 mod tests {
     use std::time::Duration;
 
-    use bytes::Bytes;
-
     use crate::http::{Method, StatusCode};
     use crate::rt::time::sleep;
+    use crate::util::Bytes;
     use crate::web::test::{call_service, init_service, read_body, TestRequest};
     use crate::web::{self, error, App, DefaultError, HttpResponse};
 
diff --git a/ntex/src/web/test.rs b/ntex/src/web/test.rs
index 4c03e5bf..6b8865c7 100644
--- a/ntex/src/web/test.rs
+++ b/ntex/src/web/test.rs
@@ -4,13 +4,10 @@ use std::{
     thread, time,
 };
 
-use bytes::{Bytes, BytesMut};
-use futures_core::Stream;
-use serde::de::DeserializeOwned;
-use serde::Serialize;
-
 #[cfg(feature = "cookie")]
 use coo_kie::Cookie;
+use serde::de::DeserializeOwned;
+use serde::Serialize;
 
 use crate::codec::{AsyncRead, AsyncWrite};
 use crate::http::body::MessageBody;
@@ -23,8 +20,10 @@ use crate::http::{HttpService, Method, Payload, Request, StatusCode, Uri, Versio
 use crate::router::{Path, ResourceDef};
 use crate::rt::{time::sleep, System};
 use crate::server::Server;
-use crate::util::{next, Extensions, Ready};
-use crate::{map_config, IntoService, IntoServiceFactory, Service, ServiceFactory};
+use crate::util::{next, Bytes, BytesMut, Extensions, Ready};
+use crate::{
+    map_config, IntoService, IntoServiceFactory, Service, ServiceFactory, Stream,
+};
 
 use crate::web::config::AppConfig;
 use crate::web::dev::{WebRequest, WebResponse};
@@ -130,8 +129,7 @@ where
 /// Helper function that returns a response body of a TestRequest
 ///
 /// ```rust
-/// use bytes::Bytes;
-/// use ntex::http::header;
+/// use ntex::{http::header, util::Bytes};
 /// use ntex::web::{self, test, App, HttpResponse};
 ///
 /// #[ntex::test]
@@ -173,8 +171,7 @@ where
 /// Helper function that returns a response body of a WebResponse.
 ///
 /// ```rust
-/// use bytes::Bytes;
-/// use ntex::http::header;
+/// use ntex::{util::Bytes, http::header};
 /// use ntex::web::{self, test, App, HttpResponse};
 ///
 /// #[ntex::test]
diff --git a/ntex/src/web/types/form.rs b/ntex/src/web/types/form.rs
index e4ad9dff..fb6b7bab 100644
--- a/ntex/src/web/types/form.rs
+++ b/ntex/src/web/types/form.rs
@@ -1,17 +1,14 @@
 //! Form extractor
-
 use std::{fmt, future::Future, ops, pin::Pin, task::Context, task::Poll};
 
-use bytes::BytesMut;
 use encoding_rs::{Encoding, UTF_8};
-use serde::de::DeserializeOwned;
-use serde::Serialize;
+use serde::{de::DeserializeOwned, Serialize};
 
 #[cfg(feature = "compress")]
 use crate::http::encoding::Decoder;
 use crate::http::header::{CONTENT_LENGTH, CONTENT_TYPE};
 use crate::http::{HttpMessage, Payload, Response, StatusCode};
-use crate::util::next;
+use crate::util::{next, BytesMut};
 use crate::web::error::{ErrorRenderer, UrlencodedError, WebResponseError};
 use crate::web::responder::{Ready, Responder};
 use crate::web::{FromRequest, HttpRequest};
@@ -342,11 +339,11 @@ where
 
 #[cfg(test)]
 mod tests {
-    use bytes::Bytes;
     use serde::{Deserialize, Serialize};
 
     use super::*;
     use crate::http::header::{HeaderValue, CONTENT_TYPE};
+    use crate::util::Bytes;
     use crate::web::test::{from_request, respond_to, TestRequest};
 
     #[derive(Deserialize, Serialize, Debug, PartialEq, derive_more::Display)]
diff --git a/ntex/src/web/types/json.rs b/ntex/src/web/types/json.rs
index 5ec32eb6..ad8e39e2 100644
--- a/ntex/src/web/types/json.rs
+++ b/ntex/src/web/types/json.rs
@@ -1,16 +1,13 @@
 //! Json extractor/responder
-
 use std::{fmt, future::Future, ops, pin::Pin, sync::Arc, task::Context, task::Poll};
 
-use bytes::BytesMut;
-use serde::de::DeserializeOwned;
-use serde::Serialize;
+use serde::{de::DeserializeOwned, Serialize};
 
 #[cfg(feature = "compress")]
 use crate::http::encoding::Decoder;
 use crate::http::header::CONTENT_LENGTH;
 use crate::http::{HttpMessage, Payload, Response, StatusCode};
-use crate::util::next;
+use crate::util::{next, BytesMut};
 use crate::web::error::{ErrorRenderer, JsonError, JsonPayloadError, WebResponseError};
 use crate::web::responder::{Ready, Responder};
 use crate::web::{FromRequest, HttpRequest};
@@ -374,10 +371,9 @@ where
 
 #[cfg(test)]
 mod tests {
-    use bytes::Bytes;
-
     use super::*;
     use crate::http::header;
+    use crate::util::Bytes;
     use crate::web::test::{from_request, respond_to, TestRequest};
 
     #[derive(
diff --git a/ntex/src/web/types/payload.rs b/ntex/src/web/types/payload.rs
index 7610415e..b4820be3 100644
--- a/ntex/src/web/types/payload.rs
+++ b/ntex/src/web/types/payload.rs
@@ -1,23 +1,22 @@
 //! Payload/Bytes/String extractors
 use std::{future::Future, pin::Pin, str, task::Context, task::Poll};
 
-use bytes::{Bytes, BytesMut};
 use encoding_rs::UTF_8;
-use futures_core::Stream;
 use mime::Mime;
 
 use crate::http::{error, header, HttpMessage};
-use crate::util::{next, Either, Ready};
+use crate::util::{next, Bytes, BytesMut, Either, Ready};
 use crate::web::error::{ErrorRenderer, PayloadError};
 use crate::web::{FromRequest, HttpRequest};
+use crate::Stream;
 
 /// Payload extractor returns request 's payload stream.
 ///
 /// ## Example
 ///
 /// ```rust
-/// use bytes::BytesMut;
 /// use futures::{Future, Stream};
+/// use ntex::util::BytesMut;
 /// use ntex::web::{self, error, App, HttpResponse};
 ///
 /// /// extract binary data from request
@@ -66,8 +65,8 @@ impl Stream for Payload {
 /// ## Example
 ///
 /// ```rust
-/// use bytes::BytesMut;
 /// use futures::{Future, Stream};
+/// use ntex::util::BytesMut;
 /// use ntex::web::{self, error, App, Error, HttpResponse};
 ///
 /// /// extract binary data from request
@@ -112,8 +111,7 @@ impl<Err: ErrorRenderer> FromRequest<Err> for Payload {
 /// ## Example
 ///
 /// ```rust
-/// use bytes::Bytes;
-/// use ntex::web;
+/// use ntex::{web, util::Bytes};
 ///
 /// /// extract binary data from request
 /// async fn index(body: Bytes) -> String {
@@ -408,10 +406,9 @@ impl Future for HttpMessageBody {
 
 #[cfg(test)]
 mod tests {
-    use bytes::Bytes;
-
     use super::*;
     use crate::http::header;
+    use crate::util::Bytes;
     use crate::web::test::{from_request, TestRequest};
 
     #[crate::rt_test]
diff --git a/ntex/src/web/ws.rs b/ntex/src/web/ws.rs
index 76576073..bddace4a 100644
--- a/ntex/src/web/ws.rs
+++ b/ntex/src/web/ws.rs
@@ -2,10 +2,6 @@ use std::{
     error::Error as StdError, marker::PhantomData, pin::Pin, task::Context, task::Poll,
 };
 
-use bytes::Bytes;
-use futures_core::Stream;
-use futures_sink::Sink;
-
 pub use crate::ws::{CloseCode, CloseReason, Frame, Message};
 
 use crate::http::body::{Body, BoxedBodyStream};
@@ -13,7 +9,7 @@ use crate::http::error::PayloadError;
 use crate::http::ws::{handshake, HandshakeError};
 use crate::service::{IntoServiceFactory, Service, ServiceFactory};
 use crate::web::{HttpRequest, HttpResponse};
-use crate::{channel::mpsc, rt, ws};
+use crate::{channel::mpsc, rt, util::Bytes, ws, Sink, Stream};
 
 pub type WebSocketsSink =
     ws::StreamEncoder<mpsc::Sender<Result<Bytes, Box<dyn StdError>>>>;
diff --git a/ntex/src/ws/codec.rs b/ntex/src/ws/codec.rs
index 265301fe..61b496a1 100644
--- a/ntex/src/ws/codec.rs
+++ b/ntex/src/ws/codec.rs
@@ -1,8 +1,7 @@
-use bytes::{Bytes, BytesMut};
-use bytestring::ByteString;
 use std::cell::Cell;
 
 use crate::codec::{Decoder, Encoder};
+use crate::util::{ByteString, Bytes, BytesMut};
 
 use super::frame::Parser;
 use super::proto::{CloseReason, OpCode};
diff --git a/ntex/src/ws/frame.rs b/ntex/src/ws/frame.rs
index 23832fb6..34b4cf50 100644
--- a/ntex/src/ws/frame.rs
+++ b/ntex/src/ws/frame.rs
@@ -1,12 +1,11 @@
 use std::convert::TryFrom;
 
-use bytes::{Buf, BufMut, BytesMut};
 use log::debug;
 use nanorand::{WyRand, RNG};
 
-use super::mask::apply_mask;
 use super::proto::{CloseCode, CloseReason, OpCode};
-use super::ProtocolError;
+use super::{mask::apply_mask, ProtocolError};
+use crate::util::{Buf, BufMut, BytesMut};
 
 /// WebSocket frame parser.
 #[derive(Debug)]
@@ -219,7 +218,7 @@ impl Parser {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use bytes::Bytes;
+    use crate::util::Bytes;
 
     struct F {
         finished: bool,
diff --git a/ntex/src/ws/stream.rs b/ntex/src/ws/stream.rs
index d562c4b3..e0069e77 100644
--- a/ntex/src/ws/stream.rs
+++ b/ntex/src/ws/stream.rs
@@ -2,11 +2,9 @@ use std::{
     cell::RefCell, fmt, marker::PhantomData, pin::Pin, rc::Rc, task::Context, task::Poll,
 };
 
-use bytes::{Bytes, BytesMut};
-use ntex_codec::{Decoder, Encoder};
-
 use super::{Codec, Frame, Message, ProtocolError};
-use crate::{Sink, Stream};
+use crate::util::{Bytes, BytesMut};
+use crate::{codec::Decoder, codec::Encoder, Sink, Stream};
 
 /// Stream error
 #[derive(Debug, Display)]
@@ -170,10 +168,10 @@ where
 
 #[cfg(test)]
 mod tests {
-    use bytestring::ByteString;
-
     use super::*;
-    use crate::{channel::mpsc, util::next, util::poll_fn, util::send};
+    use crate::{
+        channel::mpsc, util::next, util::poll_fn, util::send, util::ByteString,
+    };
 
     #[crate::rt_test]
     async fn test_decoder() {
diff --git a/ntex/tests/connect.rs b/ntex/tests/connect.rs
index c35bef2b..b095153b 100644
--- a/ntex/tests/connect.rs
+++ b/ntex/tests/connect.rs
@@ -1,6 +1,5 @@
 use std::io;
 
-use bytes::Bytes;
 use futures::SinkExt;
 
 use ntex::codec::{BytesCodec, Framed};
@@ -8,6 +7,7 @@ use ntex::connect::Connect;
 use ntex::rt::net::TcpStream;
 use ntex::server::test_server;
 use ntex::service::{fn_service, Service, ServiceFactory};
+use ntex::util::Bytes;
 
 #[cfg(feature = "openssl")]
 #[ntex::test]
diff --git a/ntex/tests/http_awc_client.rs b/ntex/tests/http_awc_client.rs
index e9abc0d8..814ee9b8 100644
--- a/ntex/tests/http_awc_client.rs
+++ b/ntex/tests/http_awc_client.rs
@@ -5,11 +5,9 @@ use std::sync::Arc;
 use std::time::Duration;
 
 use brotli2::write::BrotliEncoder;
-use bytes::Bytes;
 use coo_kie::Cookie;
 use flate2::{read::GzDecoder, write::GzEncoder, write::ZlibEncoder, Compression};
-use futures::future::ok;
-use futures::stream::once;
+use futures::{future::ok, stream::once};
 use rand::Rng;
 
 use ntex::http::client::error::{JsonPayloadError, SendRequestError};
@@ -17,6 +15,7 @@ use ntex::http::client::{Client, Connector};
 use ntex::http::test::server as test_server;
 use ntex::http::{header, HttpMessage, HttpService};
 use ntex::service::{map_config, pipeline_factory, Service};
+use ntex::util::Bytes;
 use ntex::web::dev::AppConfig;
 use ntex::web::middleware::Compress;
 use ntex::web::{self, test, App, BodyEncoding, Error, HttpRequest, HttpResponse};
diff --git a/ntex/tests/http_awc_ws.rs b/ntex/tests/http_awc_ws.rs
index d47971db..209e5cd3 100644
--- a/ntex/tests/http_awc_ws.rs
+++ b/ntex/tests/http_awc_ws.rs
@@ -1,7 +1,5 @@
 use std::io;
 
-use bytes::Bytes;
-use bytestring::ByteString;
 use futures::{future::ok, SinkExt, StreamExt};
 
 use ntex::framed::{DispatchItem, Dispatcher, State};
@@ -9,7 +7,7 @@ use ntex::http::test::server as test_server;
 use ntex::http::ws::handshake_response;
 use ntex::http::{body::BodySize, h1, HttpService, Request, Response};
 use ntex::rt::net::TcpStream;
-use ntex::ws;
+use ntex::{util::ByteString, util::Bytes, ws};
 
 async fn ws_service(
     msg: DispatchItem<ws::Codec>,
diff --git a/ntex/tests/http_client.rs b/ntex/tests/http_client.rs
index 475ed9b7..a41d234e 100644
--- a/ntex/tests/http_client.rs
+++ b/ntex/tests/http_client.rs
@@ -1,11 +1,11 @@
 use std::io;
 
-use bytes::Bytes;
 use futures::future::{self, ok};
 
 use ntex::http::test::server as test_server;
 use ntex::http::{HttpService, Method, Request, Response};
 use ntex::service::ServiceFactory;
+use ntex::util::Bytes;
 
 const STR: &str = "Hello World Hello World Hello World Hello World Hello World \
                    Hello World Hello World Hello World Hello World Hello World \
diff --git a/ntex/tests/http_openssl.rs b/ntex/tests/http_openssl.rs
index dde2761e..c2745e03 100644
--- a/ntex/tests/http_openssl.rs
+++ b/ntex/tests/http_openssl.rs
@@ -1,7 +1,6 @@
 #![cfg(feature = "openssl")]
 use std::io;
 
-use bytes::{Bytes, BytesMut};
 use futures::future::{err, ok, ready};
 use futures::stream::{once, Stream, StreamExt};
 use open_ssl::ssl::{AlpnError, SslAcceptor, SslFiletype, SslMethod};
@@ -11,6 +10,7 @@ use ntex::http::header::{self, HeaderName, HeaderValue};
 use ntex::http::test::server as test_server;
 use ntex::http::{body, HttpService, Method, Request, Response, StatusCode, Version};
 use ntex::service::{fn_service, ServiceFactory};
+use ntex::util::{Bytes, BytesMut};
 use ntex::web::error::InternalError;
 
 async fn load_body<S>(stream: S) -> Result<BytesMut, PayloadError>
diff --git a/ntex/tests/http_rustls.rs b/ntex/tests/http_rustls.rs
index 3f5983db..21568a2f 100644
--- a/ntex/tests/http_rustls.rs
+++ b/ntex/tests/http_rustls.rs
@@ -3,7 +3,6 @@ use std::fs::File;
 use std::io::{self, BufReader};
 use std::time::Duration;
 
-use bytes::{Bytes, BytesMut};
 use futures::future::{self, err, ok};
 use futures::stream::{once, Stream, StreamExt};
 use rust_tls::{
@@ -16,6 +15,7 @@ use ntex::http::header::{self, HeaderName, HeaderValue};
 use ntex::http::test::server as test_server;
 use ntex::http::{body, HttpService, Method, Request, Response, StatusCode, Version};
 use ntex::service::{fn_factory_with_config, fn_service};
+use ntex::util::{Bytes, BytesMut};
 use ntex::web::error::InternalError;
 
 async fn load_body<S>(mut stream: S) -> Result<BytesMut, PayloadError>
diff --git a/ntex/tests/http_server.rs b/ntex/tests/http_server.rs
index 77d2a4d1..1b2360db 100644
--- a/ntex/tests/http_server.rs
+++ b/ntex/tests/http_server.rs
@@ -1,8 +1,6 @@
 use std::io::{Read, Write};
-use std::time::Duration;
-use std::{io, net, thread};
+use std::{io, net, thread, time::Duration};
 
-use bytes::Bytes;
 use futures::future::{self, ok, ready, FutureExt};
 use futures::stream::{once, StreamExt};
 use regex::Regex;
@@ -13,6 +11,7 @@ use ntex::http::{
 };
 use ntex::rt::time::sleep;
 use ntex::service::fn_service;
+use ntex::util::Bytes;
 use ntex::web::error;
 
 #[ntex::test]
diff --git a/ntex/tests/http_ws.rs b/ntex/tests/http_ws.rs
index 223065c2..52d8f8ef 100644
--- a/ntex/tests/http_ws.rs
+++ b/ntex/tests/http_ws.rs
@@ -2,15 +2,13 @@ use std::sync::{Arc, Mutex};
 use std::task::{Context, Poll};
 use std::{cell::Cell, io, marker::PhantomData, pin::Pin};
 
-use bytes::Bytes;
-use bytestring::ByteString;
 use futures::{future, Future, SinkExt, StreamExt};
 
 use ntex::codec::{AsyncRead, AsyncWrite};
 use ntex::framed::{DispatchItem, Dispatcher, State, Timer};
 use ntex::http::{body, h1, test, ws::handshake, HttpService, Request, Response};
 use ntex::service::{fn_factory, Service};
-use ntex::ws;
+use ntex::{util::ByteString, util::Bytes, ws};
 
 struct WsService<T>(Arc<Mutex<Cell<bool>>>, PhantomData<T>);
 
diff --git a/ntex/tests/server.rs b/ntex/tests/server.rs
index f894e232..f39ca9ad 100644
--- a/ntex/tests/server.rs
+++ b/ntex/tests/server.rs
@@ -2,7 +2,6 @@ use std::sync::atomic::{AtomicUsize, Ordering::Relaxed};
 use std::sync::{mpsc, Arc};
 use std::{io, io::Read, net, thread, time};
 
-use bytes::Bytes;
 use futures::future::{lazy, ok, FutureExt};
 use futures::SinkExt;
 
@@ -10,6 +9,7 @@ use ntex::codec::{BytesCodec, Framed};
 use ntex::rt::net::TcpStream;
 use ntex::server::{Server, TestServer};
 use ntex::service::fn_service;
+use ntex::util::Bytes;
 
 #[test]
 fn test_bind() {
diff --git a/ntex/tests/web_server.rs b/ntex/tests/web_server.rs
index 8076db0e..ea154a49 100644
--- a/ntex/tests/web_server.rs
+++ b/ntex/tests/web_server.rs
@@ -4,7 +4,6 @@ use std::task::{Context, Poll};
 use std::time::Duration;
 
 use brotli2::write::{BrotliDecoder, BrotliEncoder};
-use bytes::Bytes;
 use derive_more::Display;
 use flate2::read::GzDecoder;
 use flate2::write::{GzEncoder, ZlibDecoder, ZlibEncoder};
@@ -19,6 +18,7 @@ use ntex::http::header::{
 };
 use ntex::http::{Method, StatusCode};
 use ntex::rt::time::{sleep, Sleep};
+use ntex::util::Bytes;
 
 use ntex::web::middleware::Compress;
 use ntex::web::{