diff --git a/Cargo.toml b/Cargo.toml
index 63db804..1adcbb5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,7 +36,7 @@ yaml = ["yaml_config"]
 
 proxy = ["tokio-socks"]
 
-tls-native = ["native-tls", "tokio-tls"]
+tls-native = ["native-tls", "tokio-native-tls"]
 tls-rust = ["tokio-rustls", "webpki-roots"]
 
 
@@ -52,8 +52,8 @@ log = "0.4.0"
 parking_lot = "0.11.0"
 pin-utils = "0.1.0-alpha.4"
 thiserror = "1.0.0"
-tokio = { version = "0.2.0", features = ["macros", "net", "stream", "time"] }
-tokio-util = { version = "0.3.0", features = ["codec"] }
+tokio = { version = "0.3.0", features = ["net", "stream", "time"] }
+tokio-util = { version = "0.4.0", features = ["codec"] }
 
 # Feature - Config
 serde = { version = "1.0.0", optional = true }
@@ -67,8 +67,8 @@ tokio-socks = { version = "0.3.0", optional = true }
 
 # Feature - TLS
 native-tls = { version = "0.2.0", optional = true }
-tokio-rustls = { version = "0.14.0", optional = true }
-tokio-tls = { version = "0.3.0", optional = true }
+tokio-rustls = { version = "0.20.0", optional = true }
+tokio-native-tls = { version = "0.2.0", optional = true }
 webpki-roots = { version = "0.20.0", optional = true }
 
 
@@ -78,6 +78,7 @@ args = "2.0.0"
 env_logger = "0.7.0"
 futures = "0.3.0"
 getopts = "0.2.0"
+tokio = { version = "0.3.0", features = ["rt", "rt-multi-thread", "macros", "net", "stream", "time"] }
 
 
 [[example]]
diff --git a/irc-proto/Cargo.toml b/irc-proto/Cargo.toml
index 069b3bf..3f31e3c 100644
--- a/irc-proto/Cargo.toml
+++ b/irc-proto/Cargo.toml
@@ -21,5 +21,5 @@ encoding = "0.2.0"
 thiserror = "1.0.0"
 
 bytes = { version = "0.5.0", optional = true }
-tokio = { version = "0.2.0", optional = true }
-tokio-util = { version = "0.3.0", features = ["codec"], optional = true }
+tokio = { version = "0.3.0", optional = true }
+tokio-util = { version = "0.4.0", features = ["codec"], optional = true }
diff --git a/src/client/conn.rs b/src/client/conn.rs
index 716b8f8..c01b872 100644
--- a/src/client/conn.rs
+++ b/src/client/conn.rs
@@ -7,7 +7,7 @@ use std::{
     task::{Context, Poll},
 };
 use tokio::net::TcpStream;
-use tokio_util::codec::Decoder;
+use tokio_util::codec::Framed;
 
 #[cfg(feature = "proxy")]
 use tokio_socks::tcp::Socks5Stream;
@@ -22,7 +22,7 @@ use std::{fs::File, io::Read};
 use native_tls::{Certificate, Identity, TlsConnector};
 
 #[cfg(feature = "tls-native")]
-use tokio_tls::{self, TlsStream};
+use tokio_native_tls::{self, TlsStream};
 
 #[cfg(feature = "tls-rust")]
 use std::{
@@ -150,7 +150,7 @@ impl Connection {
         tx: UnboundedSender<Message>,
     ) -> error::Result<Transport<TcpStream>> {
         let stream = Self::new_stream(config).await?;
-        let framed = IrcCodec::new(config.encoding())?.framed(stream);
+        let framed = Framed::new(stream, IrcCodec::new(config.encoding())?);
 
         Ok(Transport::new(&config, framed, tx))
     }
@@ -184,12 +184,12 @@ impl Connection {
             );
         }
 
-        let connector: tokio_tls::TlsConnector = builder.build()?.into();
+        let connector: tokio_native_tls::TlsConnector = builder.build()?.into();
         let domain = config.server()?;
 
         let stream = Self::new_stream(config).await?;
         let stream = connector.connect(domain, stream).await?;
-        let framed = IrcCodec::new(config.encoding())?.framed(stream);
+        let framed = Framed::new(stream, IrcCodec::new(config.encoding())?);
 
         Ok(Transport::new(&config, framed, tx))
     }
@@ -236,7 +236,7 @@ impl Connection {
 
         let stream = Self::new_stream(config).await?;
         let stream = connector.connect(domain, stream).await?;
-        let framed = IrcCodec::new(config.encoding())?.framed(stream);
+        let framed = Framed::new(stream, IrcCodec::new(config.encoding())?);
 
         Ok(Transport::new(&config, framed, tx))
     }
@@ -262,7 +262,7 @@ impl Connection {
             })?;
 
         let stream = MockStream::new(&initial);
-        let framed = IrcCodec::new(config.encoding())?.framed(stream);
+        let framed = Framed::new(stream, IrcCodec::new(config.encoding())?);
 
         Ok(Transport::new(&config, framed, tx))
     }
diff --git a/src/client/mock.rs b/src/client/mock.rs
index e1c3334..eb7e885 100644
--- a/src/client/mock.rs
+++ b/src/client/mock.rs
@@ -3,7 +3,7 @@ use std::{
     pin::Pin,
     task::{Context, Poll},
 };
-use tokio::io::{AsyncRead, AsyncWrite};
+use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
 
 /// A fake stream for testing network applications backed by buffers.
 #[derive(Clone, Debug)]
@@ -41,9 +41,11 @@ impl AsyncRead for MockStream {
     fn poll_read(
         mut self: Pin<&mut Self>,
         _: &mut Context<'_>,
-        buf: &mut [u8],
-    ) -> Poll<io::Result<usize>> {
-        Poll::Ready(self.as_mut().received.read(buf))
+        buf: &mut ReadBuf<'_>,
+    ) -> Poll<io::Result<()>> {
+        let n = self.as_mut().received.read(buf.initialize_unfilled())?;
+        buf.advance(n);
+        Poll::Ready(Ok(()))
     }
 }
 
diff --git a/src/client/transport.rs b/src/client/transport.rs
index 1d10ffa..573d566 100644
--- a/src/client/transport.rs
+++ b/src/client/transport.rs
@@ -13,7 +13,7 @@ use futures_channel::mpsc::UnboundedSender;
 use futures_util::{future::Future, ready, sink::Sink, stream::Stream};
 use tokio::{
     io::{AsyncRead, AsyncWrite},
-    time::{self, Delay, Interval},
+    time::{self, Interval, Sleep},
 };
 use tokio_util::codec::Framed;
 
@@ -31,7 +31,7 @@ struct Pinger {
     /// The amount of time to wait before timing out from no ping response.
     ping_timeout: Duration,
     /// The instant that the last ping was sent to the server.
-    ping_deadline: Option<Delay>,
+    ping_deadline: Option<Sleep>,
     /// The interval at which to send pings.
     ping_interval: Interval,
 }
@@ -98,7 +98,7 @@ impl Pinger {
     /// Set the ping deadline.
     fn set_deadline(&mut self) {
         if self.ping_deadline.is_none() {
-            let ping_deadline = time::delay_for(self.ping_timeout);
+            let ping_deadline = time::sleep(self.ping_timeout);
             self.ping_deadline = Some(ping_deadline);
         }
     }