diff --git a/Cargo.lock b/Cargo.lock
index beafce255..7fd24dcdc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -104,14 +104,17 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "byteorder"
-version = "0.5.2"
+name = "bytes"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "bytes"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+version = "0.4.0-dev"
+source = "git+https://github.com/carllerche/bytes#6529f6392a9717585b8d67e1db96e6fa0fb6cb1f"
+dependencies = [
+ "stable-heap 0.1.0 (git+https://github.com/carllerche/stable-heap?rev=3c5cd1ca47)",
+]
 
 [[package]]
 name = "cfg-if"
@@ -164,7 +167,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -293,7 +296,7 @@ dependencies = [
  "serde_codegen 0.7.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex 0.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -370,7 +373,7 @@ dependencies = [
  "parity-dapps-signer 0.6.0 (git+https://github.com/ethcore/parity-ui.git)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "ws 0.5.0 (git+https://github.com/ethcore/ws-rs.git?branch=stable)",
+ "ws 0.5.2 (git+https://github.com/ethcore/ws-rs.git?branch=mio-upstream-stable)",
 ]
 
 [[package]]
@@ -563,7 +566,7 @@ dependencies = [
  "traitobject 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vecio 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -605,7 +608,7 @@ dependencies = [
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -721,7 +724,7 @@ dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -737,7 +740,7 @@ dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -745,9 +748,24 @@ dependencies = [
  "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "mio"
+version = "0.6.0-dev"
+source = "git+https://github.com/carllerche/mio?rev=62ec763c9cc34d8a452ed0392c575c50ddd5fc8d#62ec763c9cc34d8a452ed0392c575c50ddd5fc8d"
+dependencies = [
+ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nix 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.2.0 (git+https://github.com/carllerche/slab?rev=5476efcafb)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "miow"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -795,6 +813,19 @@ dependencies = [
  "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "nix"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "semver 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "nodrop"
 version = "0.1.6"
@@ -1193,11 +1224,8 @@ dependencies = [
 
 [[package]]
 name = "sha1"
-version = "0.1.1"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "byteorder 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "sha3"
@@ -1211,6 +1239,11 @@ name = "slab"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "slab"
+version = "0.2.0"
+source = "git+https://github.com/carllerche/slab?rev=5476efcafb#5476efcafbc5ef4d7315b1bea3f756d8a1fe975e"
+
 [[package]]
 name = "slab"
 version = "0.2.0"
@@ -1230,6 +1263,11 @@ name = "spmc"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "stable-heap"
+version = "0.1.0"
+source = "git+https://github.com/carllerche/stable-heap?rev=3c5cd1ca47#3c5cd1ca4706f167a1de85658b5af0d6d3e65165"
+
 [[package]]
 name = "strsim"
 version = "0.3.0"
@@ -1386,7 +1424,7 @@ dependencies = [
 
 [[package]]
 name = "url"
-version = "1.1.1"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "idna 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1450,15 +1488,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "ws"
-version = "0.5.0"
-source = "git+https://github.com/ethcore/ws-rs.git?branch=stable#a876fc115c3ef50a17c8822c9bd2f6e94473e005"
+version = "0.5.2"
+source = "git+https://github.com/ethcore/ws-rs.git?branch=mio-upstream-stable#afbff59776ce16ccec5ee9e218b8891830ee6fdf"
 dependencies = [
+ "bytes 0.4.0-dev (git+https://github.com/carllerche/bytes)",
  "httparse 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "mio 0.5.1 (git+https://github.com/ethcore/mio?branch=v0.5.x)",
+ "mio 0.6.0-dev (git+https://github.com/carllerche/mio?rev=62ec763c9cc34d8a452ed0392c575c50ddd5fc8d)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha1 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sha1 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "slab 0.2.0 (git+https://github.com/carllerche/slab?rev=5476efcafb)",
+ "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
diff --git a/signer/Cargo.toml b/signer/Cargo.toml
index a90129a6b..86c7ad626 100644
--- a/signer/Cargo.toml
+++ b/signer/Cargo.toml
@@ -15,7 +15,7 @@ rand = "0.3.14"
 jsonrpc-core = "2.0"
 log = "0.3"
 env_logger = "0.3"
-ws = { git = "https://github.com/ethcore/ws-rs.git", branch = "stable" }
+ws = { git = "https://github.com/ethcore/ws-rs.git", branch = "mio-upstream-stable" }
 ethcore-util = { path = "../util" }
 ethcore-rpc = { path = "../rpc" }
 parity-dapps-signer = { git = "https://github.com/ethcore/parity-ui.git", version = "0.6", optional = true}
diff --git a/signer/src/authcode_store.rs b/signer/src/authcode_store.rs
index e85633d2c..214e67897 100644
--- a/signer/src/authcode_store.rs
+++ b/signer/src/authcode_store.rs
@@ -46,7 +46,7 @@ impl TimeProvider for DefaultTimeProvider {
 }
 
 /// No of seconds the hash is valid
-const TIME_THRESHOLD: u64 = 2;
+const TIME_THRESHOLD: u64 = 7;
 const TOKEN_LENGTH: usize = 16;
 
 /// Manages authorization codes for `SignerUIs`
@@ -102,7 +102,7 @@ impl<T: TimeProvider> AuthCodes<T> {
 		let now = self.now.now();
 		// check time
 		if time >= now + TIME_THRESHOLD || time <= now - TIME_THRESHOLD {
-			warn!(target: "signer", "Received old authentication request.");
+			warn!(target: "signer", "Received old authentication request. ({} vs {})", now, time);
 			return false;
 		}
 
diff --git a/signer/src/ws_server/session.rs b/signer/src/ws_server/session.rs
index 73d38656f..c2347fa0e 100644
--- a/signer/src/ws_server/session.rs
+++ b/signer/src/ws_server/session.rs
@@ -142,7 +142,9 @@ impl ws::Handler for Session {
 	fn on_message(&mut self, msg: ws::Message) -> ws::Result<()> {
 		let req = try!(msg.as_text());
 		match self.handler.handle_request(req) {
-			Some(res) => self.out.send(res),
+			Some(res) => {
+				self.out.send(res)
+			},
 			None => Ok(()),
 		}
 	}