diff --git a/src/client.rs b/src/client.rs
index 411afa5e..5dd0b0f8 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -341,7 +341,7 @@ pub(crate) struct Peer;
 
 impl<B> SendRequest<B>
 where
-    B: Buf + 'static,
+    B: Buf,
 {
     /// Returns `Ready` when the connection can initialize a new HTTP/2
     /// stream.
@@ -584,7 +584,7 @@ where
 
 impl<B> Future for ReadySendRequest<B>
 where
-    B: Buf + 'static,
+    B: Buf,
 {
     type Output = Result<SendRequest<B>, crate::Error>;
 
@@ -1100,7 +1100,7 @@ impl Builder {
     ) -> impl Future<Output = Result<(SendRequest<B>, Connection<T, B>), crate::Error>>
     where
         T: AsyncRead + AsyncWrite + Unpin,
-        B: Buf + 'static,
+        B: Buf,
     {
         Connection::handshake2(io, self.clone())
     }
@@ -1177,7 +1177,7 @@ where
 impl<T, B> Connection<T, B>
 where
     T: AsyncRead + AsyncWrite + Unpin,
-    B: Buf + 'static,
+    B: Buf,
 {
     async fn handshake2(
         mut io: T,
@@ -1306,7 +1306,7 @@ where
 impl<T, B> Future for Connection<T, B>
 where
     T: AsyncRead + AsyncWrite + Unpin,
-    B: Buf + 'static,
+    B: Buf,
 {
     type Output = Result<(), crate::Error>;
 
diff --git a/src/proto/streams/streams.rs b/src/proto/streams/streams.rs
index aee64ca6..24237f76 100644
--- a/src/proto/streams/streams.rs
+++ b/src/proto/streams/streams.rs
@@ -1229,10 +1229,7 @@ impl<B> StreamRef<B> {
             .map_err(From::from)
     }
 
-    pub fn clone_to_opaque(&self) -> OpaqueStreamRef
-    where
-        B: 'static,
-    {
+    pub fn clone_to_opaque(&self) -> OpaqueStreamRef {
         self.opaque.clone()
     }
 
diff --git a/src/server.rs b/src/server.rs
index 9f56f184..6e216a40 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -364,7 +364,7 @@ where
 impl<T, B> Connection<T, B>
 where
     T: AsyncRead + AsyncWrite + Unpin,
-    B: Buf + 'static,
+    B: Buf,
 {
     fn handshake2(io: T, builder: Builder) -> Handshake<T, B> {
         let span = tracing::trace_span!("server_handshake");
@@ -582,7 +582,7 @@ where
 impl<T, B> futures_core::Stream for Connection<T, B>
 where
     T: AsyncRead + AsyncWrite + Unpin,
-    B: Buf + 'static,
+    B: Buf,
 {
     type Item = Result<(Request<RecvStream>, SendResponse<B>), crate::Error>;
 
@@ -1007,7 +1007,7 @@ impl Builder {
     pub fn handshake<T, B>(&self, io: T) -> Handshake<T, B>
     where
         T: AsyncRead + AsyncWrite + Unpin,
-        B: Buf + 'static,
+        B: Buf,
     {
         Connection::handshake2(io, self.clone())
     }
@@ -1262,7 +1262,7 @@ where
 impl<T, B: Buf> Future for Handshake<T, B>
 where
     T: AsyncRead + AsyncWrite + Unpin,
-    B: Buf + 'static,
+    B: Buf,
 {
     type Output = Result<Connection<T, B>, crate::Error>;
 
diff --git a/tests/h2-support/src/client_ext.rs b/tests/h2-support/src/client_ext.rs
index a9ab71d9..eebbae98 100644
--- a/tests/h2-support/src/client_ext.rs
+++ b/tests/h2-support/src/client_ext.rs
@@ -11,7 +11,7 @@ pub trait SendRequestExt {
 
 impl<B> SendRequestExt for SendRequest<B>
 where
-    B: Buf + Unpin + 'static,
+    B: Buf,
 {
     fn get(&mut self, uri: &str) -> ResponseFuture {
         let req = Request::builder()
diff --git a/tests/h2-support/src/prelude.rs b/tests/h2-support/src/prelude.rs
index 86ef3249..d34f1b99 100644
--- a/tests/h2-support/src/prelude.rs
+++ b/tests/h2-support/src/prelude.rs
@@ -90,7 +90,7 @@ pub trait ClientExt {
 impl<T, B> ClientExt for client::Connection<T, B>
 where
     T: AsyncRead + AsyncWrite + Unpin + 'static,
-    B: Buf + Unpin + 'static,
+    B: Buf,
 {
     fn run<'a, F: Future + Unpin + 'a>(
         &'a mut self,