diff --git a/postgres-native-tls/Cargo.toml b/postgres-native-tls/Cargo.toml
index 59fde802..fdea8bea 100644
--- a/postgres-native-tls/Cargo.toml
+++ b/postgres-native-tls/Cargo.toml
@@ -16,12 +16,12 @@ default = ["runtime"]
 runtime = ["tokio-postgres/runtime"]
 
 [dependencies]
-futures-preview = "=0.3.0-alpha.17"
+futures-preview = "=0.3.0-alpha.18"
 native-tls = "0.2"
-tokio-io = "=0.2.0-alpha.1"
-tokio-tls = "=0.3.0-alpha.1"
+tokio-io = "=0.2.0-alpha.2"
+tokio-tls = "=0.3.0-alpha.2"
 tokio-postgres = { version = "0.4.0-rc.1", path = "../tokio-postgres", default-features = false }
 
 [dev-dependencies]
-tokio = "=0.2.0-alpha.1"
+tokio = "=0.2.0-alpha.2"
 postgres = { version = "0.16.0-rc.1", path = "../postgres" }
diff --git a/postgres-openssl/Cargo.toml b/postgres-openssl/Cargo.toml
index 21198e9d..a44e63ec 100644
--- a/postgres-openssl/Cargo.toml
+++ b/postgres-openssl/Cargo.toml
@@ -16,12 +16,12 @@ default = ["runtime"]
 runtime = ["tokio-postgres/runtime"]
 
 [dependencies]
-futures-preview = "=0.3.0-alpha.17"
+futures-preview = "=0.3.0-alpha.18"
 openssl = "0.10"
-tokio-io = "=0.2.0-alpha.1"
-tokio-openssl = "=0.4.0-alpha.1"
+tokio-io = "=0.2.0-alpha.2"
+tokio-openssl = "=0.4.0-alpha.2"
 tokio-postgres = { version = "0.4.0-rc.1", path = "../tokio-postgres", default-features = false }
 
 [dev-dependencies]
-tokio = "=0.2.0-alpha.1"
+tokio = "=0.2.0-alpha.2"
 postgres = { version = "0.16.0-rc.1", path = "../postgres" }
diff --git a/postgres/Cargo.toml b/postgres/Cargo.toml
index bc47ae82..fd5b2e83 100644
--- a/postgres/Cargo.toml
+++ b/postgres/Cargo.toml
@@ -30,14 +30,14 @@ runtime = ["tokio-postgres/runtime", "tokio", "lazy_static", "log"]
 [dependencies]
 bytes = "0.4"
 fallible-iterator = "0.2"
-futures-preview = "=0.3.0-alpha.17"
+futures-preview = "=0.3.0-alpha.18"
 pin-utils = "=0.1.0-alpha.4"
 tokio-postgres = { version = "0.4.0-rc.2", path = "../tokio-postgres", default-features = false }
-tokio-executor = "=0.2.0-alpha.1"
+tokio-executor = "=0.2.0-alpha.2"
 
-tokio = { version = "=0.2.0-alpha.1", optional = true }
+tokio = { version = "=0.2.0-alpha.2", optional = true }
 lazy_static = { version = "1.0", optional = true }
 log = { version = "0.4", optional = true }
 
 [dev-dependencies]
-tokio = "=0.2.0-alpha.1"
+tokio = "=0.2.0-alpha.2"
diff --git a/tokio-postgres/Cargo.toml b/tokio-postgres/Cargo.toml
index 02e4d5ca..92790e96 100644
--- a/tokio-postgres/Cargo.toml
+++ b/tokio-postgres/Cargo.toml
@@ -21,7 +21,7 @@ circle-ci = { repository = "sfackler/rust-postgres" }
 
 [features]
 default = ["runtime"]
-runtime = ["tokio/rt-full", "tokio/tcp", "tokio/uds", "tokio-threadpool", "lazy_static"]
+runtime = ["tokio/rt-full", "tokio/tcp", "tokio/uds", "tokio-executor", "lazy_static"]
 
 "with-bit-vec-0_5" = ["bit-vec-05"]
 "with-chrono-0_4" = ["chrono-04"]
@@ -33,16 +33,16 @@ with-serde_json-1 = ["serde-1", "serde_json-1"]
 [dependencies]
 bytes = "0.4"
 fallible-iterator = "0.2"
-futures-preview = { version = "=0.3.0-alpha.17", features = ["nightly", "async-await"] }
+futures-preview = { version = "=0.3.0-alpha.18", features = ["nightly", "async-await"] }
 log = "0.4"
 parking_lot = "0.9"
 percent-encoding = "1.0"
 pin-utils = "=0.1.0-alpha.4"
 phf = "0.7.23"
 postgres-protocol = { version = "0.4.1", path = "../postgres-protocol" }
-tokio = { version = "=0.2.0-alpha.1", default-features = false, features = ["io", "codec"] }
+tokio = { version = "=0.2.0-alpha.2", default-features = false, features = ["io", "codec"] }
 
-tokio-threadpool = { version = "=0.2.0-alpha.1", optional = true }
+tokio-executor = { version = "=0.2.0-alpha.2", optional = true }
 lazy_static = { version = "1.0", optional = true }
 
 bit-vec-05 = { version = "0.5", package = "bit-vec", optional = true }
@@ -54,5 +54,5 @@ serde_json-1 = { version = "1.0", package = "serde_json", optional = true }
 uuid-07 = { version = "0.7", package = "uuid", optional = true }
 
 [dev-dependencies]
-tokio = "=0.2.0-alpha.1"
+tokio = "=0.2.0-alpha.2"
 env_logger = "0.5"
diff --git a/tokio-postgres/src/connect_socket.rs b/tokio-postgres/src/connect_socket.rs
index 5c7d7271..bcb7cfe0 100644
--- a/tokio-postgres/src/connect_socket.rs
+++ b/tokio-postgres/src/connect_socket.rs
@@ -1,16 +1,17 @@
 use crate::config::Host;
 use crate::{Error, Socket};
-use std::vec;
 use futures::channel::oneshot;
 use futures::future;
 use std::future::Future;
 use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
 use std::time::Duration;
+use std::vec;
 use std::{io, thread};
 use tokio::net::TcpStream;
 #[cfg(unix)]
 use tokio::net::UnixStream;
 use tokio::timer::Timeout;
+use tokio_executor::threadpool;
 
 pub(crate) async fn connect_socket(
     host: &Host,
@@ -67,7 +68,7 @@ pub(crate) async fn connect_socket(
 async fn dns(host: &str, port: u16) -> io::Result<vec::IntoIter<SocketAddr>> {
     // if we're running on a threadpool, use its blocking support
     if let Ok(r) =
-        future::poll_fn(|_| tokio_threadpool::blocking(|| (host, port).to_socket_addrs())).await
+        future::poll_fn(|_| threadpool::blocking(|| (host, port).to_socket_addrs())).await
     {
         return r;
     }