diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 60e48801f..ac9d35b55 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,14 +26,14 @@ linux-stable:
     - cargo build -j $(nproc) --release -p ethstore
     - cargo build -j $(nproc) --release -p ethkey
     - strip target/release/parity
-    - strip target/release/evm
+    - strip target/release/parity-evm
     - strip target/release/ethstore
     - strip target/release/ethkey
     - export SHA3=$(target/release/parity tools hash target/release/parity)
     - md5sum target/release/parity > parity.md5
     - sh scripts/deb-build.sh amd64
     - cp target/release/parity deb/usr/bin/parity
-    - cp target/release/evm deb/usr/bin/evm
+    - cp target/release/parity-evm deb/usr/bin/parity-evm
     - cp target/release/ethstore deb/usr/bin/ethstore
     - cp target/release/ethkey deb/usr/bin/ethkey
     - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
@@ -55,9 +55,9 @@ linux-stable:
   artifacts:
     paths:
     - target/release/parity
-    - target/release/parity/evmbin
-    - target/release/parity/ethstore
-    - target/release/parity/ethkey
+    - target/release/parity-evm
+    - target/release/ethstore
+    - target/release/ethkey
     name: "stable-x86_64-unknown-linux-gnu_parity"
 linux-stable-debian:
   stage: build
@@ -73,14 +73,14 @@ linux-stable-debian:
     - cargo build -j $(nproc) --release -p ethstore
     - cargo build -j $(nproc) --release -p ethkey
     - strip target/release/parity
-    - strip target/release/evm
+    - strip target/release/parity-evm
     - strip target/release/ethstore
     - strip target/release/ethkey
     - export SHA3=$(target/release/parity tools hash target/release/parity)
     - md5sum target/release/parity > parity.md5
     - sh scripts/deb-build.sh amd64
     - cp target/release/parity deb/usr/bin/parity
-    - cp target/release/evm deb/usr/bin/evm
+    - cp target/release/parity-evm deb/usr/bin/parity-evm
     - cp target/release/ethstore deb/usr/bin/ethstore
     - cp target/release/ethkey deb/usr/bin/ethkey
     - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
diff --git a/Cargo.lock b/Cargo.lock
index 75a19affa..71c889331 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 [root]
 name = "parity"
-version = "1.6.3"
+version = "1.6.4"
 dependencies = [
  "ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "app_dirs 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -23,7 +23,7 @@ dependencies = [
  "ethcore-secretstore 1.0.0",
  "ethcore-signer 1.6.0",
  "ethcore-stratum 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethsync 1.6.0",
  "evmbin 0.1.0",
  "fdlimit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -394,7 +394,7 @@ dependencies = [
  "ethcore-ipc-codegen 1.6.0",
  "ethcore-ipc-nano 1.6.0",
  "ethcore-stratum 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethjson 0.1.0",
  "ethkey 0.2.0",
  "ethstore 0.1.0",
@@ -443,7 +443,7 @@ dependencies = [
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-devtools 1.6.0",
  "ethcore-rpc 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "fetch 0.1.0",
  "futures 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.10.0-a.0 (git+https://github.com/ethcore/hyper)",
@@ -491,7 +491,7 @@ name = "ethcore-ipc"
 version = "1.6.0"
 dependencies = [
  "ethcore-devtools 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "nanomsg 0.5.1 (git+https://github.com/ethcore/nanomsg.rs.git?branch=parity-1.7)",
  "semver 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -538,7 +538,7 @@ dependencies = [
  "ethcore-ipc 1.6.0",
  "ethcore-ipc-codegen 1.6.0",
  "ethcore-ipc-nano 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "nanomsg 0.5.1 (git+https://github.com/ethcore/nanomsg.rs.git?branch=parity-1.7)",
  "semver 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -553,7 +553,7 @@ dependencies = [
  "ethcore-ipc 1.6.0",
  "ethcore-ipc-codegen 1.6.0",
  "ethcore-network 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "futures 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -569,7 +569,7 @@ name = "ethcore-logger"
 version = "1.6.0"
 dependencies = [
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "isatty 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "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)",
@@ -585,7 +585,7 @@ dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-devtools 1.6.0",
  "ethcore-io 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethcrypto 0.1.0",
  "ethkey 0.2.0",
  "igd 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -613,7 +613,7 @@ dependencies = [
  "ethcore-io 1.6.0",
  "ethcore-ipc 1.6.0",
  "ethcore-light 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethcrypto 0.1.0",
  "ethjson 0.1.0",
  "ethkey 0.2.0",
@@ -648,7 +648,7 @@ dependencies = [
  "ethcore-ipc 1.6.0",
  "ethcore-ipc-codegen 1.6.0",
  "ethcore-ipc-nano 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethcrypto 0.1.0",
  "ethkey 0.2.0",
  "hyper 0.10.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -666,7 +666,7 @@ dependencies = [
  "ethcore-devtools 1.6.0",
  "ethcore-io 1.6.0",
  "ethcore-rpc 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "jsonrpc-core 6.0.0 (git+https://github.com/ethcore/jsonrpc.git)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-dapps-glue 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -685,7 +685,7 @@ dependencies = [
  "ethcore-ipc 1.6.0",
  "ethcore-ipc-codegen 1.6.0",
  "ethcore-ipc-nano 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "futures 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 6.0.0 (git+https://github.com/ethcore/jsonrpc.git)",
  "jsonrpc-macros 6.0.0 (git+https://github.com/ethcore/jsonrpc.git)",
@@ -699,7 +699,7 @@ dependencies = [
 
 [[package]]
 name = "ethcore-util"
-version = "1.6.3"
+version = "1.6.4"
 dependencies = [
  "ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -748,7 +748,7 @@ dependencies = [
 name = "ethjson"
 version = "0.1.0"
 dependencies = [
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -776,7 +776,7 @@ version = "0.1.0"
 dependencies = [
  "docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-devtools 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethcrypto 0.1.0",
  "ethkey 0.2.0",
  "itertools 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -809,7 +809,7 @@ dependencies = [
  "ethcore-ipc-nano 1.6.0",
  "ethcore-light 1.6.0",
  "ethcore-network 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethkey 0.2.0",
  "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -826,7 +826,7 @@ version = "0.1.0"
 dependencies = [
  "docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1054,7 +1054,7 @@ version = "1.6.0"
 dependencies = [
  "ethcore-ipc 1.6.0",
  "ethcore-ipc-codegen 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "semver 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1379,7 +1379,7 @@ dependencies = [
 [[package]]
 name = "nanomsg"
 version = "0.5.1"
-source = "git+https://github.com/ethcore/nanomsg.rs.git?branch=parity-1.7#26ec71ecbdb284d7a5d596bdb3d0fde02c55d0bc"
+source = "git+https://github.com/ethcore/nanomsg.rs.git?branch=parity-1.7#673b79beef6e149273899850d7692335a481a920"
 dependencies = [
  "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "nanomsg-sys 0.5.0 (git+https://github.com/ethcore/nanomsg.rs.git?branch=parity-1.7)",
@@ -1388,7 +1388,7 @@ dependencies = [
 [[package]]
 name = "nanomsg-sys"
 version = "0.5.0"
-source = "git+https://github.com/ethcore/nanomsg.rs.git?branch=parity-1.7#26ec71ecbdb284d7a5d596bdb3d0fde02c55d0bc"
+source = "git+https://github.com/ethcore/nanomsg.rs.git?branch=parity-1.7#673b79beef6e149273899850d7692335a481a920"
 dependencies = [
  "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1621,7 +1621,7 @@ name = "parity-hash-fetch"
 version = "1.6.0"
 dependencies = [
  "ethabi 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "fetch 0.1.0",
  "futures 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1638,7 +1638,7 @@ version = "1.6.0"
 dependencies = [
  "cid 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "hyper 0.10.0-a.0 (git+https://github.com/ethcore/hyper)",
  "jsonrpc-http-server 6.0.0 (git+https://github.com/ethcore/jsonrpc.git)",
  "mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1652,7 +1652,7 @@ version = "0.1.0"
 dependencies = [
  "ethcore 1.6.0",
  "ethcore-io 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethkey 0.2.0",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.1.0",
@@ -1675,7 +1675,7 @@ version = "1.4.0"
 dependencies = [
  "ethcore-rpc 1.6.0",
  "ethcore-signer 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "futures 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 6.0.0 (git+https://github.com/ethcore/jsonrpc.git)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1719,7 +1719,7 @@ dependencies = [
  "ethcore 1.6.0",
  "ethcore-ipc 1.6.0",
  "ethcore-ipc-codegen 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "ethsync 1.6.0",
  "ipc-common-types 1.6.0",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1994,7 +1994,7 @@ version = "1.4.0"
 dependencies = [
  "ethcore-bigint 0.1.2",
  "ethcore-rpc 1.6.0",
- "ethcore-util 1.6.3",
+ "ethcore-util 1.6.4",
  "futures 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-rpc-client 1.4.0",
  "rpassword 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 28541ddf3..7b93b46d0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 description = "Parity Ethereum client"
 name = "parity"
-version = "1.6.3"
+version = "1.6.4"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 
diff --git a/ethcore/src/miner/miner.rs b/ethcore/src/miner/miner.rs
index 99c22f88e..6d4d216cf 100644
--- a/ethcore/src/miner/miner.rs
+++ b/ethcore/src/miner/miner.rs
@@ -230,7 +230,8 @@ pub struct Miner {
 impl Miner {
 	/// Push notifier that will handle new jobs
 	pub fn push_notifier(&self, notifier: Box<NotifyWork>) {
-		self.notifiers.write().push(notifier)
+		self.notifiers.write().push(notifier);
+		self.sealing_work.lock().enabled = true;
 	}
 
 	/// Creates new instance of miner Arc.
@@ -298,7 +299,7 @@ impl Miner {
 	}
 
 	fn forced_sealing(&self) -> bool {
-		self.options.force_sealing || !self.options.new_work_notify.is_empty()
+		self.options.force_sealing || !self.notifiers.read().is_empty()
 	}
 
 	/// Clear all pending block states
diff --git a/ethcore/src/miner/stratum.rs b/ethcore/src/miner/stratum.rs
index d887f1afa..a0ee737de 100644
--- a/ethcore/src/miner/stratum.rs
+++ b/ethcore/src/miner/stratum.rs
@@ -211,6 +211,8 @@ impl From<AddrParseError> for Error {
 
 impl super::work_notify::NotifyWork for Stratum {
 	fn notify(&self, pow_hash: H256, difficulty: U256, number: u64) {
+		trace!(target: "stratum", "Notify work");
+
 		self.service.push_work_all(
 			self.dispatcher.payload(pow_hash, difficulty, number)
 		).unwrap_or_else(
diff --git a/evmbin/Cargo.toml b/evmbin/Cargo.toml
index 98193a5c3..7f671d384 100644
--- a/evmbin/Cargo.toml
+++ b/evmbin/Cargo.toml
@@ -5,11 +5,11 @@ version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 
 [lib]
-name = "evm"
+name = "evmbin"
 path = "./src/main.rs"
 
 [[bin]]
-name = "evm"
+name = "parity-evm"
 path = "./src/main.rs"
 
 [dependencies]
diff --git a/hw/src/ledger.rs b/hw/src/ledger.rs
index 255fa8515..8d0054214 100644
--- a/hw/src/ledger.rs
+++ b/hw/src/ledger.rs
@@ -271,7 +271,7 @@ impl Manager {
 					chunk_size += size;
 				}
 				trace!("writing {:?}", &hid_chunk[..]);
-				let n = handle.write(&hid_chunk[0..chunk_size])?;
+				let n = handle.write(&hid_chunk[..])?;
 				if n < chunk_size {
 					return Err(Error::Protocol("Write data size mismatch"));
 				}
diff --git a/mac/Parity.pkgproj b/mac/Parity.pkgproj
index 641ff8bd1..9245d1213 100755
--- a/mac/Parity.pkgproj
+++ b/mac/Parity.pkgproj
@@ -462,7 +462,7 @@
 				<key>OVERWRITE_PERMISSIONS</key>
 				<false/>
 				<key>VERSION</key>
-				<string>1.6.3</string>
+				<string>1.6.4</string>
 			</dict>
 			<key>UUID</key>
 			<string>2DCD5B81-7BAF-4DA1-9251-6274B089FD36</string>
diff --git a/mac/Parity/Info.plist b/mac/Parity/Info.plist
index 26ddc8153..7b7b733d2 100644
--- a/mac/Parity/Info.plist
+++ b/mac/Parity/Info.plist
@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.6.3</string>
+	<string>1.6.4</string>
 	<key>CFBundleVersion</key>
 	<string>1</string>
 	<key>LSApplicationCategoryType</key>
diff --git a/nsis/installer.nsi b/nsis/installer.nsi
index 75f09ed95..7317dc529 100644
--- a/nsis/installer.nsi
+++ b/nsis/installer.nsi
@@ -10,7 +10,7 @@
 !define DESCRIPTION "Fast, light, robust Ethereum implementation"
 !define VERSIONMAJOR 1
 !define VERSIONMINOR 6
-!define VERSIONBUILD 3
+!define VERSIONBUILD 4
 !define ARGS "--warp"
 !define FIRST_START_ARGS "ui --warp --mode=passive"
 
diff --git a/util/Cargo.toml b/util/Cargo.toml
index 49e026940..d48babd4e 100644
--- a/util/Cargo.toml
+++ b/util/Cargo.toml
@@ -3,7 +3,7 @@ description = "Ethcore utility library"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-util"
-version = "1.6.3"
+version = "1.6.4"
 authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"