diff --git a/Cargo.lock b/Cargo.lock
index 49899015b50..b165dfe1e98 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1369,7 +1369,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-core"
 version = "8.0.1"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#6b972b5fd34ada4a7de6aed1a8c92475a907732d"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#a1b2bb742ce16d1168669ffb13ffe856e8131228"
 dependencies = [
  "futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1381,7 +1381,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-http-server"
 version = "8.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#6b972b5fd34ada4a7de6aed1a8c92475a907732d"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#a1b2bb742ce16d1168669ffb13ffe856e8131228"
 dependencies = [
  "hyper 0.11.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 8.0.1 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
@@ -1394,19 +1394,19 @@ dependencies = [
 [[package]]
 name = "jsonrpc-ipc-server"
 version = "8.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#6b972b5fd34ada4a7de6aed1a8c92475a907732d"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#a1b2bb742ce16d1168669ffb13ffe856e8131228"
 dependencies = [
  "jsonrpc-core 8.0.1 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
  "jsonrpc-server-utils 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-tokio-ipc 0.1.5 (git+https://github.com/nikvolf/parity-tokio-ipc)",
+ "parity-tokio-ipc 0.1.5 (git+https://github.com/nikvolf/parity-tokio-ipc?rev=c0f80b40399d7f08ef1e6869569640eb28645f56)",
  "tokio-service 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "jsonrpc-macros"
 version = "8.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#6b972b5fd34ada4a7de6aed1a8c92475a907732d"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#a1b2bb742ce16d1168669ffb13ffe856e8131228"
 dependencies = [
  "jsonrpc-core 8.0.1 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
  "jsonrpc-pubsub 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
@@ -1416,7 +1416,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-pubsub"
 version = "8.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#6b972b5fd34ada4a7de6aed1a8c92475a907732d"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#a1b2bb742ce16d1168669ffb13ffe856e8131228"
 dependencies = [
  "jsonrpc-core 8.0.1 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1426,7 +1426,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-server-utils"
 version = "8.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#6b972b5fd34ada4a7de6aed1a8c92475a907732d"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#a1b2bb742ce16d1168669ffb13ffe856e8131228"
 dependencies = [
  "bytes 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "globset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1434,12 +1434,13 @@ dependencies = [
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-core 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-timer 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "jsonrpc-tcp-server"
 version = "8.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#6b972b5fd34ada4a7de6aed1a8c92475a907732d"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#a1b2bb742ce16d1168669ffb13ffe856e8131228"
 dependencies = [
  "jsonrpc-core 8.0.1 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
  "jsonrpc-server-utils 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
@@ -1451,7 +1452,7 @@ dependencies = [
 [[package]]
 name = "jsonrpc-ws-server"
 version = "8.0.0"
-source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#6b972b5fd34ada4a7de6aed1a8c92475a907732d"
+source = "git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11#a1b2bb742ce16d1168669ffb13ffe856e8131228"
 dependencies = [
  "error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 8.0.1 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.11)",
@@ -1957,7 +1958,7 @@ source = "git+https://github.com/paritytech/parity-common#0045887fecd2fec39e56c9
 name = "parity-clib"
 version = "1.12.0"
 dependencies = [
- "parity-ethereum 2.0.8",
+ "parity-ethereum 2.0.9",
 ]
 
 [[package]]
@@ -1974,7 +1975,7 @@ dependencies = [
 
 [[package]]
 name = "parity-ethereum"
-version = "2.0.8"
+version = "2.0.9"
 dependencies = [
  "ansi_term 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "atty 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2023,7 +2024,7 @@ dependencies = [
  "parity-rpc 1.12.0",
  "parity-rpc-client 1.4.0",
  "parity-updater 1.12.0",
- "parity-version 2.0.8",
+ "parity-version 2.0.9",
  "parity-whisper 0.1.0",
  "parking_lot 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "path 0.1.1 (git+https://github.com/paritytech/parity-common)",
@@ -2162,7 +2163,7 @@ dependencies = [
  "parity-crypto 0.1.0 (git+https://github.com/paritytech/parity-common)",
  "parity-reactor 0.1.0",
  "parity-updater 1.12.0",
- "parity-version 2.0.8",
+ "parity-version 2.0.9",
  "parking_lot 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "patricia-trie 0.2.1 (git+https://github.com/paritytech/parity-common)",
  "plain_hasher 0.1.0 (git+https://github.com/paritytech/parity-common)",
@@ -2203,7 +2204,7 @@ dependencies = [
 [[package]]
 name = "parity-tokio-ipc"
 version = "0.1.5"
-source = "git+https://github.com/nikvolf/parity-tokio-ipc#2af3e5b6b746552d8181069a2c6be068377df1de"
+source = "git+https://github.com/nikvolf/parity-tokio-ipc?rev=c0f80b40399d7f08ef1e6869569640eb28645f56#c0f80b40399d7f08ef1e6869569640eb28645f56"
 dependencies = [
  "bytes 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2215,6 +2216,7 @@ dependencies = [
  "tokio-io 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-named-pipes 0.1.0 (git+https://github.com/nikvolf/tokio-named-pipes)",
  "tokio-uds 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2233,7 +2235,7 @@ dependencies = [
  "matches 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-bytes 0.1.0 (git+https://github.com/paritytech/parity-common)",
  "parity-hash-fetch 1.12.0",
- "parity-version 2.0.8",
+ "parity-version 2.0.9",
  "parking_lot 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "path 0.1.1 (git+https://github.com/paritytech/parity-common)",
  "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2244,7 +2246,7 @@ dependencies = [
 
 [[package]]
 name = "parity-version"
-version = "2.0.8"
+version = "2.0.9"
 dependencies = [
  "parity-bytes 0.1.0 (git+https://github.com/paritytech/parity-common)",
  "rlp 0.2.1 (git+https://github.com/paritytech/parity-common)",
@@ -3790,7 +3792,7 @@ dependencies = [
 "checksum owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cdf84f41639e037b484f93433aa3897863b561ed65c6e59c7073d7c561710f37"
 "checksum parity-bytes 0.1.0 (git+https://github.com/paritytech/parity-common)" = "<none>"
 "checksum parity-crypto 0.1.0 (git+https://github.com/paritytech/parity-common)" = "<none>"
-"checksum parity-tokio-ipc 0.1.5 (git+https://github.com/nikvolf/parity-tokio-ipc)" = "<none>"
+"checksum parity-tokio-ipc 0.1.5 (git+https://github.com/nikvolf/parity-tokio-ipc?rev=c0f80b40399d7f08ef1e6869569640eb28645f56)" = "<none>"
 "checksum parity-wasm 0.31.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e1c91199d14bd5b78ecade323d4a891d094799749c1b9e82d9c590c2e2849a40"
 "checksum parity-wordlist 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d0dec124478845b142f68b446cbee953d14d4b41f1bc0425024417720dce693"
 "checksum parking_lot 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "901d6514273469bb17380c1ac3f51fb3ce54be1f960e51a6f04901eba313ab8d"
diff --git a/Cargo.toml b/Cargo.toml
index cb561fc7c70..44c6fb92fb8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 description = "Parity Ethereum client"
 name = "parity-ethereum"
 # NOTE Make sure to update util/version/Cargo.toml as well
-version = "2.0.8"
+version = "2.0.9"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 
diff --git a/ethcore/res/ethereum/ropsten.json b/ethcore/res/ethereum/ropsten.json
index cf418af19dc..6d9c6ca1762 100644
--- a/ethcore/res/ethereum/ropsten.json
+++ b/ethcore/res/ethereum/ropsten.json
@@ -24,8 +24,8 @@
 		"maximumExtraDataSize": "0x20",
 		"minGasLimit": "0x1388",
 		"networkID" : "0x3",
-		"forkBlock": 3383558,
-		"forkCanonHash": "0x6b4b80d65951375a70bc1ecf9a270d152dd355454d57869abbae2e42c213e0f3",
+		"forkBlock": "0x40E80F",
+		"forkCanonHash": "0x3e12d5c0f8d63fbc5831cc7f7273bd824fa4d0a9a4102d65d99a7ea5604abc00",
 		"maxCodeSize": 24576,
 		"maxCodeSizeTransition": 10,
 		"eip150Transition": 0,
diff --git a/ethcore/src/client/client.rs b/ethcore/src/client/client.rs
index 2fb6d3f2abf..2014cd2e9bd 100644
--- a/ethcore/src/client/client.rs
+++ b/ethcore/src/client/client.rs
@@ -1486,28 +1486,34 @@ impl Call for Client {
 		let sender = t.sender();
 		let options = || TransactOptions::with_tracing().dont_check_nonce();
 
-		let cond = |gas| {
+		let exec = |gas| {
 			let mut tx = t.as_unsigned().clone();
 			tx.gas = gas;
 			let tx = tx.fake_sign(sender);
 
 			let mut clone = state.clone();
-			Ok(Executive::new(&mut clone, &env_info, self.engine.machine())
+			Executive::new(&mut clone, &env_info, self.engine.machine())
 				.transact_virtual(&tx, options())
+				.ok()
 				.map(|r| r.exception.is_none())
-				.unwrap_or(false))
 		};
 
-		if !cond(upper)? {
+		let cond = |gas| exec(gas).unwrap_or(false);
+
+		if !cond(upper) {
 			upper = max_upper;
-			if !cond(upper)? {
-				trace!(target: "estimate_gas", "estimate_gas failed with {}", upper);
-				let err = ExecutionError::Internal(format!("Requires higher than upper limit of {}", upper));
-				return Err(err.into())
+			match exec(upper) {
+				Some(false) => return Err(CallError::Exceptional),
+				None => {
+					trace!(target: "estimate_gas", "estimate_gas failed with {}", upper);
+					let err = ExecutionError::Internal(format!("Requires higher than upper limit of {}", upper));
+					return Err(err.into())
+				},
+				_ => {},
 			}
 		}
 		let lower = t.gas_required(&self.engine.schedule(env_info.number)).into();
-		if cond(lower)? {
+		if cond(lower) {
 			trace!(target: "estimate_gas", "estimate_gas succeeded with {}", lower);
 			return Ok(lower)
 		}
@@ -1516,12 +1522,12 @@ impl Call for Client {
 		/// Returns the lowest value between `lower` and `upper` for which `cond` returns true.
 		/// We assert: `cond(lower) = false`, `cond(upper) = true`
 		fn binary_chop<F, E>(mut lower: U256, mut upper: U256, mut cond: F) -> Result<U256, E>
-			where F: FnMut(U256) -> Result<bool, E>
+			where F: FnMut(U256) -> bool
 		{
 			while upper - lower > 1.into() {
 				let mid = (lower + upper) / 2.into();
 				trace!(target: "estimate_gas", "{} .. {} .. {}", lower, mid, upper);
-				let c = cond(mid)?;
+				let c = cond(mid);
 				match c {
 					true => upper = mid,
 					false => lower = mid,
diff --git a/ethcore/transaction/src/transaction.rs b/ethcore/transaction/src/transaction.rs
index b6434384bb2..556cd49244a 100644
--- a/ethcore/transaction/src/transaction.rs
+++ b/ethcore/transaction/src/transaction.rs
@@ -90,8 +90,8 @@ pub mod signature {
 		match v {
 			v if v == 27 => 0,
 			v if v == 28 => 1,
-			v if v > 36 => ((v - 1) % 2) as u8,
-			 _ => 4
+			v if v >= 35 => ((v - 1) % 2) as u8,
+			_ => 4
 		}
 	}
 }
@@ -358,7 +358,7 @@ impl UnverifiedTransaction {
 	pub fn chain_id(&self) -> Option<u64> {
 		match self.v {
 			v if self.is_unsigned() => Some(v),
-			v if v > 36 => Some((v - 35) / 2),
+			v if v >= 35 => Some((v - 35) / 2),
 			_ => None,
 		}
 	}
@@ -577,6 +577,27 @@ mod tests {
 		assert_eq!(t.chain_id(), None);
 	}
 
+	#[test]
+	fn signing_eip155_zero_chainid() {
+		use ethkey::{Random, Generator};
+
+		let key = Random.generate().unwrap();
+		let t = Transaction {
+			action: Action::Create,
+			nonce: U256::from(42),
+			gas_price: U256::from(3000),
+			gas: U256::from(50_000),
+			value: U256::from(1),
+			data: b"Hello!".to_vec()
+		};
+
+		let hash = t.hash(Some(0));
+		let sig = ::ethkey::sign(&key.secret(), &hash).unwrap();
+		let u = t.with_signature(sig, Some(0));
+
+		assert!(SignedTransaction::new(u).is_ok());
+	}
+
 	#[test]
 	fn signing() {
 		use ethkey::{Random, Generator};
diff --git a/parity/run.rs b/parity/run.rs
index 73324aa0896..0129aaf5a03 100644
--- a/parity/run.rs
+++ b/parity/run.rs
@@ -960,6 +960,11 @@ fn prepare_account_provider(spec: &SpecType, dirs: &Directories, data_dir: &str,
 		account_settings,
 	);
 
+	// Add development account if running dev chain:
+	if let SpecType::Dev = *spec {
+		insert_dev_account(&account_provider);
+	}
+
 	for a in cfg.unlocked_accounts {
 		// Check if the account exists
 		if !account_provider.has_account(a) {
@@ -976,11 +981,6 @@ fn prepare_account_provider(spec: &SpecType, dirs: &Directories, data_dir: &str,
 		}
 	}
 
-	// Add development account if running dev chain:
-	if let SpecType::Dev = *spec {
-		insert_dev_account(&account_provider);
-	}
-
 	Ok(account_provider)
 }
 
diff --git a/scripts/gitlab/build-windows.sh b/scripts/gitlab/build-windows.sh
index b0570b917dc..afd4c64a601 100755
--- a/scripts/gitlab/build-windows.sh
+++ b/scripts/gitlab/build-windows.sh
@@ -5,8 +5,6 @@ set -u # treat unset variables as error
 set INCLUDE="C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Include;C:\vs2015\VC\include;C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt"
 set LIB="C:\vs2015\VC\lib;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.10240.0\ucrt\x64"
 
-rustup default stable-x86_64-pc-windows-msvc
-
 echo "__________Show ENVIROMENT__________"
 echo "CI_SERVER_NAME:   " $CI_SERVER_NAME
 echo "CARGO_HOME:       " $CARGO_HOME
diff --git a/util/version/Cargo.toml b/util/version/Cargo.toml
index 72597e4ca37..ce6f7700ae0 100644
--- a/util/version/Cargo.toml
+++ b/util/version/Cargo.toml
@@ -3,7 +3,7 @@
 [package]
 name = "parity-version"
 # NOTE: this value is used for Parity version string (via env CARGO_PKG_VERSION)
-version = "2.0.8"
+version = "2.0.9"
 authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
 
@@ -16,9 +16,9 @@ track = "stable"
 # Latest supported fork blocks.
 # Indicates a critical release in this track (i.e. consensus issue).
 [package.metadata.networks]
-foundation = { forkBlock = 4370000, critical = true }
-ropsten = { forkBlock = 10, critical = true }
-kovan = { forkBlock = 6600000, critical = true }
+foundation = { forkBlock = 4370000, critical = false }
+ropsten = { forkBlock = 4230000, critical = false }
+kovan = { forkBlock = 6600000, critical = false }
 
 [dependencies]
 parity-bytes = { git = "https://github.com/paritytech/parity-common" }