diff --git a/Cargo.toml b/Cargo.toml
index 4c3b11e2..8c6d461d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -90,7 +90,7 @@ fxhash = "0.2.1"
 log = "0.4"
 mime = "0.3"
 socket2 = "0.3"
-pin-project = "0.4.6"
+pin-project = "0.4.17"
 regex = "1.3"
 serde = { version = "1.0", features=["derive"] }
 serde_json = "1.0"
diff --git a/actix-http/Cargo.toml b/actix-http/Cargo.toml
index edd8201d..d2ae7698 100644
--- a/actix-http/Cargo.toml
+++ b/actix-http/Cargo.toml
@@ -70,7 +70,7 @@ language-tags = "0.2"
 log = "0.4"
 mime = "0.3"
 percent-encoding = "2.1"
-pin-project = "0.4.6"
+pin-project = "0.4.17"
 rand = "0.7"
 regex = "1.3"
 serde = "1.0"
diff --git a/actix-http/src/body.rs b/actix-http/src/body.rs
index 9d6fb26e..0b01aa8c 100644
--- a/actix-http/src/body.rs
+++ b/actix-http/src/body.rs
@@ -6,7 +6,7 @@ use std::{fmt, mem};
 use bytes::{Bytes, BytesMut};
 use futures_core::Stream;
 use futures_util::ready;
-use pin_project::{pin_project, project};
+use pin_project::pin_project;
 
 use crate::error::Error;
 
@@ -70,7 +70,7 @@ impl<T: MessageBody + Unpin> MessageBody for Box<T> {
     }
 }
 
-#[pin_project]
+#[pin_project(project = ResponseBodyProj)]
 pub enum ResponseBody<B> {
     Body(#[pin] B),
     Other(#[pin] Body),
@@ -109,15 +109,13 @@ impl<B: MessageBody> MessageBody for ResponseBody<B> {
         }
     }
 
-    #[project]
     fn poll_next(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
     ) -> Poll<Option<Result<Bytes, Error>>> {
-        #[project]
         match self.project() {
-            ResponseBody::Body(body) => body.poll_next(cx),
-            ResponseBody::Other(body) => body.poll_next(cx),
+            ResponseBodyProj::Body(body) => body.poll_next(cx),
+            ResponseBodyProj::Other(body) => body.poll_next(cx),
         }
     }
 }
@@ -125,20 +123,18 @@ impl<B: MessageBody> MessageBody for ResponseBody<B> {
 impl<B: MessageBody> Stream for ResponseBody<B> {
     type Item = Result<Bytes, Error>;
 
-    #[project]
     fn poll_next(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
     ) -> Poll<Option<Self::Item>> {
-        #[project]
         match self.project() {
-            ResponseBody::Body(body) => body.poll_next(cx),
-            ResponseBody::Other(body) => body.poll_next(cx),
+            ResponseBodyProj::Body(body) => body.poll_next(cx),
+            ResponseBodyProj::Other(body) => body.poll_next(cx),
         }
     }
 }
 
-#[pin_project]
+#[pin_project(project = BodyProj)]
 /// Represents various types of http message body.
 pub enum Body {
     /// Empty response. `Content-Length` header is not set.
@@ -173,16 +169,14 @@ impl MessageBody for Body {
         }
     }
 
-    #[project]
     fn poll_next(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
     ) -> Poll<Option<Result<Bytes, Error>>> {
-        #[project]
         match self.project() {
-            Body::None => Poll::Ready(None),
-            Body::Empty => Poll::Ready(None),
-            Body::Bytes(ref mut bin) => {
+            BodyProj::None => Poll::Ready(None),
+            BodyProj::Empty => Poll::Ready(None),
+            BodyProj::Bytes(ref mut bin) => {
                 let len = bin.len();
                 if len == 0 {
                     Poll::Ready(None)
@@ -190,7 +184,7 @@ impl MessageBody for Body {
                     Poll::Ready(Some(Ok(mem::take(bin))))
                 }
             }
-            Body::Message(ref mut body) => Pin::new(body.as_mut()).poll_next(cx),
+            BodyProj::Message(ref mut body) => Pin::new(body.as_mut()).poll_next(cx),
         }
     }
 }
diff --git a/actix-http/src/client/connection.rs b/actix-http/src/client/connection.rs
index c1362df8..eecf2ee6 100644
--- a/actix-http/src/client/connection.rs
+++ b/actix-http/src/client/connection.rs
@@ -7,7 +7,7 @@ use actix_codec::{AsyncRead, AsyncWrite, Framed};
 use bytes::{Buf, Bytes};
 use futures_util::future::{err, Either, FutureExt, LocalBoxFuture, Ready};
 use h2::client::SendRequest;
-use pin_project::{pin_project, project};
+use pin_project::pin_project;
 
 use crate::body::MessageBody;
 use crate::h1::ClientCodec;
@@ -205,7 +205,7 @@ where
     }
 }
 
-#[pin_project]
+#[pin_project(project = EitherIoProj)]
 pub enum EitherIo<A, B> {
     A(#[pin] A),
     B(#[pin] B),
@@ -216,16 +216,14 @@ where
     A: AsyncRead,
     B: AsyncRead,
 {
-    #[project]
     fn poll_read(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
         buf: &mut [u8],
     ) -> Poll<io::Result<usize>> {
-        #[project]
         match self.project() {
-            EitherIo::A(val) => val.poll_read(cx, buf),
-            EitherIo::B(val) => val.poll_read(cx, buf),
+            EitherIoProj::A(val) => val.poll_read(cx, buf),
+            EitherIoProj::B(val) => val.poll_read(cx, buf),
         }
     }
 
@@ -245,41 +243,34 @@ where
     A: AsyncWrite,
     B: AsyncWrite,
 {
-    #[project]
     fn poll_write(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
         buf: &[u8],
     ) -> Poll<io::Result<usize>> {
-        #[project]
         match self.project() {
-            EitherIo::A(val) => val.poll_write(cx, buf),
-            EitherIo::B(val) => val.poll_write(cx, buf),
+            EitherIoProj::A(val) => val.poll_write(cx, buf),
+            EitherIoProj::B(val) => val.poll_write(cx, buf),
         }
     }
 
-    #[project]
     fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
-        #[project]
         match self.project() {
-            EitherIo::A(val) => val.poll_flush(cx),
-            EitherIo::B(val) => val.poll_flush(cx),
+            EitherIoProj::A(val) => val.poll_flush(cx),
+            EitherIoProj::B(val) => val.poll_flush(cx),
         }
     }
 
-    #[project]
     fn poll_shutdown(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
     ) -> Poll<io::Result<()>> {
-        #[project]
         match self.project() {
-            EitherIo::A(val) => val.poll_shutdown(cx),
-            EitherIo::B(val) => val.poll_shutdown(cx),
+            EitherIoProj::A(val) => val.poll_shutdown(cx),
+            EitherIoProj::B(val) => val.poll_shutdown(cx),
         }
     }
 
-    #[project]
     fn poll_write_buf<U: Buf>(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -288,10 +279,9 @@ where
     where
         Self: Sized,
     {
-        #[project]
         match self.project() {
-            EitherIo::A(val) => val.poll_write_buf(cx, buf),
-            EitherIo::B(val) => val.poll_write_buf(cx, buf),
+            EitherIoProj::A(val) => val.poll_write_buf(cx, buf),
+            EitherIoProj::B(val) => val.poll_write_buf(cx, buf),
         }
     }
 }
diff --git a/actix-http/src/encoding/encoder.rs b/actix-http/src/encoding/encoder.rs
index ef69aa03..eb182128 100644
--- a/actix-http/src/encoding/encoder.rs
+++ b/actix-http/src/encoding/encoder.rs
@@ -9,7 +9,7 @@ use brotli2::write::BrotliEncoder;
 use bytes::Bytes;
 use flate2::write::{GzEncoder, ZlibEncoder};
 use futures_core::ready;
-use pin_project::{pin_project, project};
+use pin_project::pin_project;
 
 use crate::body::{Body, BodySize, MessageBody, ResponseBody};
 use crate::http::header::{ContentEncoding, CONTENT_ENCODING};
@@ -79,7 +79,7 @@ impl<B: MessageBody> Encoder<B> {
     }
 }
 
-#[pin_project]
+#[pin_project(project = EncoderBodyProj)]
 enum EncoderBody<B> {
     Bytes(Bytes),
     Stream(#[pin] B),
@@ -95,22 +95,22 @@ impl<B: MessageBody> MessageBody for EncoderBody<B> {
         }
     }
 
-    #[project]
     fn poll_next(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
     ) -> Poll<Option<Result<Bytes, Error>>> {
-        #[project]
         match self.project() {
-            EncoderBody::Bytes(b) => {
+            EncoderBodyProj::Bytes(b) => {
                 if b.is_empty() {
                     Poll::Ready(None)
                 } else {
                     Poll::Ready(Some(Ok(std::mem::take(b))))
                 }
             }
-            EncoderBody::Stream(b) => b.poll_next(cx),
-            EncoderBody::BoxedStream(ref mut b) => Pin::new(b.as_mut()).poll_next(cx),
+            EncoderBodyProj::Stream(b) => b.poll_next(cx),
+            EncoderBodyProj::BoxedStream(ref mut b) => {
+                Pin::new(b.as_mut()).poll_next(cx)
+            }
         }
     }
 }
diff --git a/actix-http/src/h1/dispatcher.rs b/actix-http/src/h1/dispatcher.rs
index c95000bf..e16d3536 100644
--- a/actix-http/src/h1/dispatcher.rs
+++ b/actix-http/src/h1/dispatcher.rs
@@ -58,7 +58,7 @@ where
     inner: DispatcherState<T, S, B, X, U>,
 }
 
-#[pin_project]
+#[pin_project(project = DispatcherStateProj)]
 enum DispatcherState<T, S, B, X, U>
 where
     S: Service<Request = Request>,
@@ -73,7 +73,7 @@ where
     Upgrade(Pin<Box<U::Future>>),
 }
 
-#[pin_project]
+#[pin_project(project = InnerDispatcherProj)]
 struct InnerDispatcher<T, S, B, X, U>
 where
     S: Service<Request = Request>,
@@ -112,7 +112,7 @@ enum DispatcherMessage {
     Error(Response<()>),
 }
 
-#[pin_project]
+#[pin_project(project = StateProj)]
 enum State<S, B, X>
 where
     S: Service<Request = Request>,
@@ -296,7 +296,6 @@ where
     ///
     /// true - got WouldBlock
     /// false - didn't get WouldBlock
-    #[pin_project::project]
     fn poll_flush(
         self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -307,8 +306,7 @@ where
 
         let len = self.write_buf.len();
         let mut written = 0;
-        #[project]
-        let InnerDispatcher { io, write_buf, .. } = self.project();
+        let InnerDispatcherProj { io, write_buf, .. } = self.project();
         let mut io = Pin::new(io.as_mut().unwrap());
         while written < len {
             match io.as_mut().poll_write(cx, &write_buf[written..]) {
@@ -366,16 +364,14 @@ where
             .extend_from_slice(b"HTTP/1.1 100 Continue\r\n\r\n");
     }
 
-    #[pin_project::project]
     fn poll_response(
         mut self: Pin<&mut Self>,
         cx: &mut Context<'_>,
     ) -> Result<PollResponse, DispatchError> {
         loop {
             let mut this = self.as_mut().project();
-            #[project]
             let state = match this.state.project() {
-                State::None => match this.messages.pop_front() {
+                StateProj::None => match this.messages.pop_front() {
                     Some(DispatcherMessage::Item(req)) => {
                         Some(self.as_mut().handle_request(req, cx)?)
                     }
@@ -388,7 +384,7 @@ where
                     }
                     None => None,
                 },
-                State::ExpectCall(fut) => match fut.as_mut().poll(cx) {
+                StateProj::ExpectCall(fut) => match fut.as_mut().poll(cx) {
                     Poll::Ready(Ok(req)) => {
                         self.as_mut().send_continue();
                         this = self.as_mut().project();
@@ -403,7 +399,7 @@ where
                     }
                     Poll::Pending => None,
                 },
-                State::ServiceCall(fut) => match fut.as_mut().poll(cx) {
+                StateProj::ServiceCall(fut) => match fut.as_mut().poll(cx) {
                     Poll::Ready(Ok(res)) => {
                         let (res, body) = res.into().replace_body(());
                         let state = self.as_mut().send_response(res, body)?;
@@ -418,7 +414,7 @@ where
                     }
                     Poll::Pending => None,
                 },
-                State::SendPayload(mut stream) => {
+                StateProj::SendPayload(mut stream) => {
                     loop {
                         if this.write_buf.len() < HW_BUFFER_SIZE {
                             match stream.as_mut().poll_next(cx) {
@@ -724,13 +720,11 @@ where
 {
     type Output = Result<(), DispatchError>;
 
-    #[pin_project::project]
     #[inline]
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         let this = self.as_mut().project();
-        #[project]
         match this.inner.project() {
-            DispatcherState::Normal(mut inner) => {
+            DispatcherStateProj::Normal(mut inner) => {
                 inner.as_mut().poll_keepalive(cx)?;
 
                 if inner.flags.contains(Flags::SHUTDOWN) {
@@ -850,7 +844,7 @@ where
                     }
                 }
             }
-            DispatcherState::Upgrade(fut) => fut.as_mut().poll(cx).map_err(|e| {
+            DispatcherStateProj::Upgrade(fut) => fut.as_mut().poll(cx).map_err(|e| {
                 error!("Upgrade handler error: {}", e);
                 DispatchError::Upgrade
             }),
diff --git a/actix-http/src/h2/dispatcher.rs b/actix-http/src/h2/dispatcher.rs
index a189697a..33fb3a81 100644
--- a/actix-http/src/h2/dispatcher.rs
+++ b/actix-http/src/h2/dispatcher.rs
@@ -165,7 +165,7 @@ struct ServiceResponse<F, I, E, B> {
     _t: PhantomData<(I, E)>,
 }
 
-#[pin_project::pin_project]
+#[pin_project::pin_project(project = ServiceResponseStateProj)]
 enum ServiceResponseState<F, B> {
     ServiceCall(#[pin] F, Option<SendResponse<Bytes>>),
     SendPayload(SendStream<Bytes>, #[pin] ResponseBody<B>),
@@ -245,13 +245,11 @@ where
 {
     type Output = ();
 
-    #[pin_project::project]
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
         let mut this = self.as_mut().project();
 
-        #[project]
         match this.state.project() {
-            ServiceResponseState::ServiceCall(call, send) => match call.poll(cx) {
+            ServiceResponseStateProj::ServiceCall(call, send) => match call.poll(cx) {
                 Poll::Ready(Ok(res)) => {
                     let (res, body) = res.into().replace_body(());
 
@@ -305,7 +303,7 @@ where
                     }
                 }
             },
-            ServiceResponseState::SendPayload(ref mut stream, ref mut body) => loop {
+            ServiceResponseStateProj::SendPayload(ref mut stream, ref mut body) => loop {
                 loop {
                     if let Some(ref mut buffer) = this.buffer {
                         match stream.poll_capacity(cx) {
diff --git a/actix-http/src/service.rs b/actix-http/src/service.rs
index 51de9513..94cdbc82 100644
--- a/actix-http/src/service.rs
+++ b/actix-http/src/service.rs
@@ -10,7 +10,7 @@ use bytes::Bytes;
 use futures_core::{ready, Future};
 use futures_util::future::ok;
 use h2::server::{self, Handshake};
-use pin_project::{pin_project, project};
+use pin_project::pin_project;
 
 use crate::body::MessageBody;
 use crate::builder::HttpServiceBuilder;
@@ -574,7 +574,7 @@ where
     }
 }
 
-#[pin_project]
+#[pin_project(project = StateProj)]
 enum State<T, S, B, X, U>
 where
     S: Service<Request = Request>,
@@ -650,16 +650,14 @@ where
     U: Service<Request = (Request, Framed<T, h1::Codec>), Response = ()>,
     U::Error: fmt::Display,
 {
-    #[project]
     fn poll(
         mut self: Pin<&mut Self>,
         cx: &mut Context<'_>,
     ) -> Poll<Result<(), DispatchError>> {
-        #[project]
         match self.as_mut().project() {
-            State::H1(disp) => disp.poll(cx),
-            State::H2(disp) => disp.poll(cx),
-            State::H2Handshake(ref mut data) => {
+            StateProj::H1(disp) => disp.poll(cx),
+            StateProj::H2(disp) => disp.poll(cx),
+            StateProj::H2Handshake(ref mut data) => {
                 let conn = if let Some(ref mut item) = data {
                     match Pin::new(&mut item.0).poll(cx) {
                         Poll::Ready(Ok(conn)) => conn,
diff --git a/actix-web-actors/Cargo.toml b/actix-web-actors/Cargo.toml
index 20fd3743..8db7a35e 100644
--- a/actix-web-actors/Cargo.toml
+++ b/actix-web-actors/Cargo.toml
@@ -23,7 +23,7 @@ actix-codec = "0.2.0"
 bytes = "0.5.2"
 futures-channel = { version = "0.3.5", default-features = false }
 futures-core = { version = "0.3.5", default-features = false }
-pin-project = "0.4.6"
+pin-project = "0.4.17"
 
 [dev-dependencies]
 actix-rt = "1.0.0"
diff --git a/src/responder.rs b/src/responder.rs
index 367c9fcc..e102d23e 100644
--- a/src/responder.rs
+++ b/src/responder.rs
@@ -12,7 +12,7 @@ use actix_http::{Error, Response, ResponseBuilder};
 use bytes::{Bytes, BytesMut};
 use futures_util::future::{err, ok, Either as EitherFuture, Ready};
 use futures_util::ready;
-use pin_project::{pin_project, project};
+use pin_project::pin_project;
 
 use crate::request::HttpRequest;
 
@@ -379,7 +379,7 @@ where
     }
 }
 
-#[pin_project]
+#[pin_project(project = EitherResponderProj)]
 pub enum EitherResponder<A, B>
 where
     A: Responder,
@@ -396,14 +396,12 @@ where
 {
     type Output = Result<Response, Error>;
 
-    #[project]
     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
-        #[project]
         match self.project() {
-            EitherResponder::A(fut) => {
+            EitherResponderProj::A(fut) => {
                 Poll::Ready(ready!(fut.poll(cx)).map_err(|e| e.into()))
             }
-            EitherResponder::B(fut) => {
+            EitherResponderProj::B(fut) => {
                 Poll::Ready(ready!(fut.poll(cx).map_err(|e| e.into())))
             }
         }