diff --git a/Cargo.toml b/Cargo.toml
index 2e39b99..eb551cd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -44,9 +44,9 @@ members = [
 ]
 
 [dependencies]
-futures-preview = "0.3.0-alpha.18"
-tokio-io = { version = "0.2.0-alpha.2", features = ["util"] }
-tokio-codec = "0.2.0-alpha.2"
+futures-preview = "=0.3.0-alpha.18"
+tokio-io = { version = "=0.2.0-alpha.4", features = ["util"] }
+tokio-codec = "=0.2.0-alpha.4"
 bytes = "0.4.7"
 http = "0.1.8"
 log = "0.4.1"
@@ -68,7 +68,7 @@ serde = "1.0.0"
 serde_json = "1.0.0"
 
 # Akamai example
-tokio = "0.2.0-alpha.2"
+tokio = "=0.2.0-alpha.4"
 env_logger = { version = "0.5.3", default-features = false }
 rustls = "0.12"
 tokio-rustls = "0.5.0"
diff --git a/examples/client.rs b/examples/client.rs
index b443a57..61e237a 100644
--- a/examples/client.rs
+++ b/examples/client.rs
@@ -9,7 +9,7 @@ use tokio::net::TcpStream;
 pub async fn main() -> Result<(), Box<dyn Error>> {
     let _ = env_logger::try_init();
 
-    let tcp = TcpStream::connect(&"127.0.0.1:5928".parse().unwrap()).await?;
+    let tcp = TcpStream::connect("127.0.0.1:5928").await?;
     let (mut client, h2) = client::handshake(tcp).await?;
 
     println!("sending request");
diff --git a/examples/server.rs b/examples/server.rs
index 418fb82..abe792d 100644
--- a/examples/server.rs
+++ b/examples/server.rs
@@ -10,7 +10,7 @@ use tokio::net::{TcpListener, TcpStream};
 pub async fn main() -> Result<(), Box<dyn Error>> {
     let _ = env_logger::try_init();
 
-    let mut listener = TcpListener::bind(&"127.0.0.1:5928".parse()?)?;
+    let mut listener = TcpListener::bind("127.0.0.1:5928").await?;
 
     println!("listening on {:?}", listener.local_addr());
 
diff --git a/src/client.rs b/src/client.rs
index fdb5643..ec2d1fe 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -74,10 +74,8 @@
 //!
 //! #[tokio::main]
 //! pub async fn main() -> Result<(), Box<dyn Error>> {
-//!     let addr = "127.0.0.1:5928".parse().unwrap();
-//!
 //!     // Establish TCP connection to the server.
-//!     let tcp = TcpStream::connect(&addr).await?;
+//!     let tcp = TcpStream::connect("127.0.0.1:5928").await?;
 //!     let (h2, connection) = client::handshake(tcp).await?;
 //!     tokio::spawn(async move {
 //!         connection.await.unwrap();
diff --git a/src/server.rs b/src/server.rs
index 1cff258..924e8ce 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -70,8 +70,7 @@
 //!
 //! #[tokio::main]
 //! pub async fn main() {
-//!     let addr = "127.0.0.1:5928".parse().unwrap();
-//!     let mut listener = TcpListener::bind(&addr).unwrap();
+//!     let mut listener = TcpListener::bind("127.0.0.1:5928").await.unwrap();
 //!
 //!     // Accept all incoming TCP connections.
 //!     loop {
diff --git a/tests/h2-fuzz/Cargo.toml b/tests/h2-fuzz/Cargo.toml
index f9b9f11..f53652c 100644
--- a/tests/h2-fuzz/Cargo.toml
+++ b/tests/h2-fuzz/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2018"
 h2 = { path = "../.." }
 
 env_logger = { version = "0.5.3", default-features = false }
-futures-preview = "0.3.0-alpha.17"
+futures-preview = "=0.3.0-alpha.18"
 honggfuzz = "0.5"
 http = "0.1.3"
-tokio = "0.2.0-alpha.1"
+tokio = "=0.2.0-alpha.4"
diff --git a/tests/h2-support/Cargo.toml b/tests/h2-support/Cargo.toml
index 0ec64b9..d3ec410 100644
--- a/tests/h2-support/Cargo.toml
+++ b/tests/h2-support/Cargo.toml
@@ -9,7 +9,7 @@ h2 = { path = "../..", features = ["stream", "unstable"] }
 
 bytes = "0.4.7"
 env_logger = "0.5.9"
-futures-preview = "0.3.0-alpha.17"
+futures-preview = "=0.3.0-alpha.18"
 http = "0.1.5"
 string = "0.2"
-tokio = "0.2.0-alpha.1"
+tokio = "=0.2.0-alpha.4"
diff --git a/tests/h2-support/src/mock.rs b/tests/h2-support/src/mock.rs
index 19ae804..d74884f 100644
--- a/tests/h2-support/src/mock.rs
+++ b/tests/h2-support/src/mock.rs
@@ -7,14 +7,13 @@ use futures::future::poll_fn;
 use futures::{ready, Stream, StreamExt};
 
 use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
-use tokio::timer::Delay;
 
 use super::assert::assert_frame_eq;
 use futures::executor::block_on;
 use std::pin::Pin;
 use std::sync::{Arc, Mutex};
 use std::task::{Context, Poll, Waker};
-use std::time::{Duration, Instant};
+use std::time::Duration;
 use std::{cmp, io, usize};
 
 /// A mock I/O
@@ -483,5 +482,5 @@ impl AsyncWrite for Pipe {
 }
 
 pub async fn idle_ms(ms: u64) {
-    Delay::new(Instant::now() + Duration::from_millis(ms)).await
+    tokio::timer::delay(tokio::clock::now() + Duration::from_millis(ms)).await
 }
diff --git a/tests/h2-support/src/mock_io.rs b/tests/h2-support/src/mock_io.rs
index 8b3c95b..4d86882 100644
--- a/tests/h2-support/src/mock_io.rs
+++ b/tests/h2-support/src/mock_io.rs
@@ -396,7 +396,7 @@ mod tokio_ {
                 match self.inner.read(buf) {
                     Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
                         if let Some(rem) = self.inner.remaining_wait() {
-                            self.tokio.sleep = Some(Delay::new(Instant::now() + rem));
+                            self.tokio.sleep = Some(tokio::timer::delay(Instant::now() + rem));
                         } else {
                             self.tokio.read_wait = Some(cx.waker().clone());
                             return Poll::Pending;
@@ -440,7 +440,7 @@ mod tokio_ {
                 match self.inner.write(buf) {
                     Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
                         if let Some(rem) = self.inner.remaining_wait() {
-                            self.tokio.sleep = Some(Delay::new(Instant::now() + rem));
+                            self.tokio.sleep = Some(tokio::timer::delay(Instant::now() + rem));
                         } else {
                             panic!("unexpected WouldBlock");
                         }
diff --git a/tests/h2-tests/Cargo.toml b/tests/h2-tests/Cargo.toml
index 5876b5e..6495aa3 100644
--- a/tests/h2-tests/Cargo.toml
+++ b/tests/h2-tests/Cargo.toml
@@ -10,5 +10,5 @@ edition = "2018"
 [dev-dependencies]
 h2-support = { path = "../h2-support" }
 log = "0.4.1"
-futures-preview = "0.3.0-alpha.17"
-tokio = "0.2.0-alpha.1"
+futures-preview = "=0.3.0-alpha.18"
+tokio = "=0.2.0-alpha.4"
diff --git a/tests/h2-tests/tests/flow_control.rs b/tests/h2-tests/tests/flow_control.rs
index 18b5cd2..170263a 100644
--- a/tests/h2-tests/tests/flow_control.rs
+++ b/tests/h2-tests/tests/flow_control.rs
@@ -947,7 +947,6 @@ async fn settings_lowered_capacity_returns_capacity_to_connection() {
     use futures::channel::oneshot;
     use futures::future::{select, Either};
     use std::time::Instant;
-    use tokio::timer::Delay;
 
     let _ = env_logger::try_init();
     let (io, mut srv) = mock::new();
@@ -979,7 +978,11 @@ async fn settings_lowered_capacity_returns_capacity_to_connection() {
         //
         // A timeout is used here to avoid blocking forever if there is a
         // failure
-        let result = select(rx2, Delay::new(Instant::now() + Duration::from_secs(5))).await;
+        let result = select(
+            rx2,
+            tokio::timer::delay(Instant::now() + Duration::from_secs(5)),
+        )
+        .await;
         if let Either::Right((_, _)) = result {
             panic!("Timed out");
         }
@@ -1011,7 +1014,11 @@ async fn settings_lowered_capacity_returns_capacity_to_connection() {
     });
 
     // Wait for server handshake to complete.
-    let result = select(rx1, Delay::new(Instant::now() + Duration::from_secs(5))).await;
+    let result = select(
+        rx1,
+        tokio::timer::delay(Instant::now() + Duration::from_secs(5)),
+    )
+    .await;
     if let Either::Right((_, _)) = result {
         panic!("Timed out");
     }
diff --git a/tests/h2-tests/tests/hammer.rs b/tests/h2-tests/tests/hammer.rs
index 589d348..b5da13f 100644
--- a/tests/h2-tests/tests/hammer.rs
+++ b/tests/h2-tests/tests/hammer.rs
@@ -26,7 +26,10 @@ impl Server {
     {
         let mk_data = Arc::new(mk_data);
 
-        let listener = TcpListener::bind(&SocketAddr::from(([127, 0, 0, 1], 0))).unwrap();
+        let rt = tokio::runtime::Runtime::new().unwrap();
+        let listener = rt
+            .block_on(TcpListener::bind(SocketAddr::from(([127, 0, 0, 1], 0))))
+            .unwrap();
         let addr = listener.local_addr().unwrap();
         let reqs = Arc::new(AtomicUsize::new(0));
         let reqs2 = reqs.clone();
@@ -44,7 +47,6 @@ impl Server {
                 }
             };
 
-            let rt = tokio::runtime::Runtime::new().unwrap();
             rt.block_on(server);
         });