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diff --git a/Cargo.toml b/Cargo.toml
index ebacc96..f3acaec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,8 @@ preserves = "0.3.1"
 serde = { version = "1.0", features = ["derive", "rc"] }
 serde_bytes = "0.11"
 
-tokio = "0.2.0-alpha"
-bytes = "0.4.12"
+tokio = { version = "0.2.20", features = ["macros", "rt-threaded", "sync", "dns", "tcp", "time", "stream"] }
+tokio-util = { version = "0.3.1", features = ["codec"] }
+bytes = "0.5.4"
 
-futures-preview = { version = "=0.3.0-alpha.18", features = ["async-await", "nightly"] }
+futures = "0.3.4"
diff --git a/src/dataspace.rs b/src/dataspace.rs
index b294138..a0bd5b4 100644
--- a/src/dataspace.rs
+++ b/src/dataspace.rs
@@ -137,7 +137,7 @@ impl Dataspace {
 
     fn deliver_outbound_turns(&mut self, outbound_turns: Map<ConnId, Vec<packets::Event>>) {
         for (target, events) in outbound_turns {
-            let _ = self.peers.get_mut(&target).unwrap().tx.try_send(packets::Out::Turn(events));
+            let _ = self.peers.get_mut(&target).unwrap().tx.send(packets::Out::Turn(events));
         }
     }
 }
diff --git a/src/packets.rs b/src/packets.rs
index 63bcacb..8e04c91 100644
--- a/src/packets.rs
+++ b/src/packets.rs
@@ -1,7 +1,7 @@
 use super::V;
 use super::Syndicate;
 
-use bytes::BytesMut;
+use bytes::{Buf, BytesMut};
 use preserves::value;
 use std::io;
 use std::sync::Arc;
@@ -97,7 +97,7 @@ impl Codec {
     }
 }
 
-impl tokio::codec::Decoder for Codec {
+impl tokio_util::codec::Decoder for Codec {
     type Item = In;
     type Error = DecodeError;
     fn decode(&mut self, bs: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
@@ -119,10 +119,10 @@ impl tokio::codec::Decoder for Codec {
     }
 }
 
-impl tokio::codec::Encoder for Codec {
-    type Item = Out;
+impl tokio_util::codec::Encoder<Out> for Codec
+{
     type Error = EncodeError;
-    fn encode(&mut self, item: Self::Item, bs: &mut BytesMut) -> Result<(), Self::Error> {
+    fn encode(&mut self, item: Out, bs: &mut BytesMut) -> Result<(), Self::Error> {
         let v: V = value::to_value(&item)?;
         bs.extend(self.codec.encode_bytes(&v)?);
         Ok(())
diff --git a/src/peer.rs b/src/peer.rs
index af1bd72..53ce601 100644
--- a/src/peer.rs
+++ b/src/peer.rs
@@ -5,14 +5,16 @@ use super::packets;
 use super::spaces;
 
 use core::time::Duration;
+use futures::FutureExt;
+use futures::SinkExt;
 use futures::select;
 use preserves::value::{self, Map};
 use std::sync::{Mutex, Arc};
-use tokio::codec::Framed;
 use tokio::net::TcpStream;
-use tokio::prelude::*;
+use tokio::stream::StreamExt;
 use tokio::sync::mpsc::{unbounded_channel, UnboundedSender, UnboundedReceiver};
-use tokio::timer::Interval;
+use tokio::time::interval;
+use tokio_util::codec::Framed;
 
 pub struct Peer {
     id: ConnId,
@@ -55,7 +57,7 @@ impl Peer {
         self.space = Some(spaces.lock().unwrap().lookup(&dsname));
         self.space.as_ref().unwrap().write().unwrap().register(self.id, self.tx.clone());
 
-        let mut ping_timer = Interval::new_interval(Duration::from_secs(60));
+        let mut ping_timer = interval(Duration::from_secs(60));
 
         let mut running = true;
         while running {