diff --git a/Cargo.toml b/Cargo.toml
index 2eed7f101f0..0f73f93e3e7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,7 @@ libp2p-uds = { version = "0.13.0", path = "transports/uds" }
 libp2p-wasm-ext = { version = "0.6.0", path = "transports/wasm-ext" }
 libp2p-yamux = { version = "0.13.0", path = "muxers/yamux" }
 parking_lot = "0.9.0"
-smallvec = "0.6"
+smallvec = "1.0"
 tokio-codec = "0.1"
 tokio-executor = "0.1"
 tokio-io = "0.1"
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 401d3fc3720..514ea4b067c 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -30,7 +30,7 @@ quick-error = "1.2"
 rand = "0.7"
 rw-stream-sink = { version = "0.1.1", path = "../misc/rw-stream-sink" }
 sha2 = "0.8.0"
-smallvec = "0.6"
+smallvec = "1.0"
 unsigned-varint = "0.2"
 void = "1"
 wasm-timer = "0.1"
diff --git a/core/src/nodes/node.rs b/core/src/nodes/node.rs
index 37da9954097..99e5df61eb0 100644
--- a/core/src/nodes/node.rs
+++ b/core/src/nodes/node.rs
@@ -133,7 +133,7 @@ where
     /// Destroys all outbound streams and returns the corresponding user data.
     pub fn cancel_outgoing(&mut self) -> Vec<TUserData> {
         let mut out = Vec::with_capacity(self.outbound_substreams.len());
-        for (user_data, outbound) in self.outbound_substreams.drain() {
+        for (user_data, outbound) in self.outbound_substreams.drain(..) {
             out.push(user_data);
             self.muxer.destroy_outbound(outbound);
         }
@@ -201,7 +201,7 @@ where
         // The substreams that were produced will continue to work, as the muxer is held in an Arc.
         // However we will no longer process any further inbound or outbound substream, and we
         // therefore close everything.
-        for (_, outbound) in self.outbound_substreams.drain() {
+        for (_, outbound) in self.outbound_substreams.drain(..) {
             self.muxer.destroy_outbound(outbound);
         }
     }
diff --git a/misc/multistream-select/Cargo.toml b/misc/multistream-select/Cargo.toml
index 7e30a382e88..0568d75dffb 100644
--- a/misc/multistream-select/Cargo.toml
+++ b/misc/multistream-select/Cargo.toml
@@ -13,7 +13,7 @@ edition = "2018"
 bytes = "0.4"
 futures = "0.1"
 log = "0.4"
-smallvec = "0.6"
+smallvec = "1.0"
 tokio-io = "0.1"
 unsigned-varint = "0.2.2"
 
diff --git a/protocols/deflate/Cargo.toml b/protocols/deflate/Cargo.toml
index c81c6fade80..7bf924ccac2 100644
--- a/protocols/deflate/Cargo.toml
+++ b/protocols/deflate/Cargo.toml
@@ -10,13 +10,13 @@ keywords = ["peer-to-peer", "libp2p", "networking"]
 categories = ["network-programming", "asynchronous"]
 
 [dependencies]
-futures-preview = "0.3.0-alpha.18"
+futures = "0.3.1"
 libp2p-core = { version = "0.13.0", path = "../../core" }
 flate2 = "1.0"
 
 [dev-dependencies]
-async-std = "0.99"
+async-std = "1.0"
 env_logger = "0.7.1"
 libp2p-tcp = { version = "0.13.0", path = "../../transports/tcp" }
 rand = "0.7"
-quickcheck = "0.9.0"
+quickcheck = "0.9"
diff --git a/protocols/floodsub/Cargo.toml b/protocols/floodsub/Cargo.toml
index ec87c35cb03..f1c46f6bac5 100644
--- a/protocols/floodsub/Cargo.toml
+++ b/protocols/floodsub/Cargo.toml
@@ -14,9 +14,9 @@ bs58 = "0.3.0"
 bytes = "0.4"
 cuckoofilter = "0.3.2"
 fnv = "1.0"
-futures-preview = "0.3.0-alpha.18"
+futures = "0.3.1"
 libp2p-core = { version = "0.13.0", path = "../../core" }
 libp2p-swarm = { version = "0.3.0", path = "../../swarm" }
 protobuf = "2.8"
 rand = "0.6"
-smallvec = "0.6.5"
+smallvec = "1.0"
diff --git a/protocols/identify/Cargo.toml b/protocols/identify/Cargo.toml
index d4ff6339b58..e1776b21c5b 100644
--- a/protocols/identify/Cargo.toml
+++ b/protocols/identify/Cargo.toml
@@ -11,14 +11,14 @@ categories = ["network-programming", "asynchronous"]
 
 [dependencies]
 bytes = "0.4"
-futures_codec = "0.3.0"
-futures-preview = "0.3.0-alpha.18"
+futures_codec = "0.3.1"
+futures = "0.3.1"
 libp2p-core = { version = "0.13.0", path = "../../core" }
 libp2p-swarm = { version = "0.3.0", path = "../../swarm" }
 log = "0.4.1"
 multiaddr = { package = "parity-multiaddr", version = "0.5.0", path = "../../misc/multiaddr" }
 protobuf = "2.8"
-smallvec = "0.6"
+smallvec = "1.0"
 wasm-timer = "0.2"
 unsigned-varint = { version = "0.2.3", features = ["futures-codec"] }
 
diff --git a/protocols/kad/Cargo.toml b/protocols/kad/Cargo.toml
index f81f8757c31..5faa2d169ac 100644
--- a/protocols/kad/Cargo.toml
+++ b/protocols/kad/Cargo.toml
@@ -14,8 +14,8 @@ arrayvec = "0.5.1"
 bytes = "0.4"
 either = "1.5"
 fnv = "1.0"
-futures_codec = "0.3.0"
-futures-preview = "0.3.0-alpha.18"
+futures_codec = "0.3.1"
+futures = "0.3.1"
 log = "0.4"
 libp2p-core = { version = "0.13.0", path = "../../core" }
 libp2p-swarm = { version = "0.3.0", path = "../../swarm" }
@@ -24,7 +24,7 @@ multihash = { package = "parity-multihash", version = "0.1.4", path = "../../mis
 protobuf = "2.8"
 rand = "0.7.2"
 sha2 = "0.8.0"
-smallvec = "0.6"
+smallvec = "1.0"
 wasm-timer = "0.2"
 uint = "0.8"
 unsigned-varint = { version = "0.2.3", features = ["futures-codec"] }
diff --git a/protocols/noise/Cargo.toml b/protocols/noise/Cargo.toml
index 051dadb26ed..0d59bf34a5b 100644
--- a/protocols/noise/Cargo.toml
+++ b/protocols/noise/Cargo.toml
@@ -10,7 +10,7 @@ edition = "2018"
 [dependencies]
 bytes = "0.4"
 curve25519-dalek = "1"
-futures-preview = "0.3.0-alpha.18"
+futures = "0.3.1"
 lazy_static = "1.2"
 libp2p-core = { version = "0.13.0", path = "../../core" }
 log = "0.4"
diff --git a/protocols/noise/src/io.rs b/protocols/noise/src/io.rs
index 780a76c6179..351bcfe2430 100644
--- a/protocols/noise/src/io.rs
+++ b/protocols/noise/src/io.rs
@@ -22,11 +22,11 @@
 
 pub mod handshake;
 
-use futures::{ready, Poll};
+use futures::ready;
 use futures::prelude::*;
 use log::{debug, trace};
 use snow;
-use std::{fmt, io, pin::Pin, ops::DerefMut, task::Context};
+use std::{fmt, io, pin::Pin, ops::DerefMut, task::{Context, Poll}};
 
 const MAX_NOISE_PKG_LEN: usize = 65535;
 const MAX_WRITE_BUF_LEN: usize = 16384;
diff --git a/protocols/ping/Cargo.toml b/protocols/ping/Cargo.toml
index 83b5f12917e..d2f561cac83 100644
--- a/protocols/ping/Cargo.toml
+++ b/protocols/ping/Cargo.toml
@@ -15,7 +15,7 @@ libp2p-core = { version = "0.13.0", path = "../../core" }
 libp2p-swarm = { version = "0.3.0", path = "../../swarm" }
 log = "0.4.1"
 multiaddr = { package = "parity-multiaddr", version = "0.5.0", path = "../../misc/multiaddr" }
-futures-preview = "0.3.0-alpha.18"
+futures = "0.3.1"
 rand = "0.7.2"
 wasm-timer = "0.2"
 void = "1.0"
diff --git a/swarm/Cargo.toml b/swarm/Cargo.toml
index 55535691bb0..b9cc2cdec9b 100644
--- a/swarm/Cargo.toml
+++ b/swarm/Cargo.toml
@@ -12,7 +12,7 @@ categories = ["network-programming", "asynchronous"]
 [dependencies]
 futures = "0.3.1"
 libp2p-core = { version = "0.13.0", path = "../core" }
-smallvec = "0.6"
+smallvec = "1.0"
 wasm-timer = "0.2"
 void = "1"
 
diff --git a/transports/dns/Cargo.toml b/transports/dns/Cargo.toml
index 62f8251fb58..134b448eeba 100644
--- a/transports/dns/Cargo.toml
+++ b/transports/dns/Cargo.toml
@@ -12,4 +12,4 @@ categories = ["network-programming", "asynchronous"]
 [dependencies]
 libp2p-core = { version = "0.13.0", path = "../../core" }
 log = "0.4.1"
-futures-preview = "0.3.0-alpha.18"
+futures = "0.3.1"
diff --git a/transports/wasm-ext/Cargo.toml b/transports/wasm-ext/Cargo.toml
index 41606b40236..878132d4127 100644
--- a/transports/wasm-ext/Cargo.toml
+++ b/transports/wasm-ext/Cargo.toml
@@ -10,9 +10,9 @@ keywords = ["peer-to-peer", "libp2p", "networking"]
 categories = ["network-programming", "asynchronous"]
 
 [dependencies]
-futures-preview = "0.3.0-alpha.18"
+futures = "0.3.1"
 js-sys = "0.3.19"
 libp2p-core = { version = "0.13.0", path = "../../core" }
 parity-send-wrapper = "0.1.0"
 wasm-bindgen = "0.2.42"
-wasm-bindgen-futures = { version = "0.3.25", features = ["futures_0_3"] }
+wasm-bindgen-futures = "0.4.4"
diff --git a/transports/wasm-ext/src/lib.rs b/transports/wasm-ext/src/lib.rs
index 64026eef46c..9b788a8db2a 100644
--- a/transports/wasm-ext/src/lib.rs
+++ b/transports/wasm-ext/src/lib.rs
@@ -37,7 +37,7 @@ use libp2p_core::{transport::ListenerEvent, transport::TransportError, Multiaddr
 use parity_send_wrapper::SendWrapper;
 use std::{collections::VecDeque, error, fmt, io, mem, pin::Pin, task::Context, task::Poll};
 use wasm_bindgen::{JsCast, prelude::*};
-use wasm_bindgen_futures::futures_0_3::JsFuture;
+use wasm_bindgen_futures::JsFuture;
 
 /// Contains the definition that one must match on the JavaScript side.
 pub mod ffi {