diff --git a/Cargo.lock b/Cargo.lock
index 684389f7d..c451a6477 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -190,12 +190,12 @@ dependencies = [
  "ethcore 0.9.0",
  "ethcore-util 0.9.0",
  "ethsync 0.1.0",
- "jsonrpc-core 1.1.1 (git+https://github.com/debris/jsonrpc-core)",
- "jsonrpc-http-server 1.1.0 (git+https://github.com/debris/jsonrpc-http-server)",
+ "jsonrpc-core 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-http-server 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_macros 0.6.13 (git+https://github.com/debris/serde)",
+ "serde_macros 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -346,21 +346,21 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-core"
-version = "1.1.1"
-source = "git+https://github.com/debris/jsonrpc-core#f59f462d29f75849d1af1958500730349c93d239"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "serde 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_macros 0.6.13 (git+https://github.com/debris/serde)",
+ "serde_macros 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "jsonrpc-http-server"
-version = "1.1.0"
-source = "git+https://github.com/debris/jsonrpc-http-server#23ee2d14331a1fcfe9b9d58cbfa3f49a15ad2326"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hyper 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 1.1.1 (git+https://github.com/debris/jsonrpc-core)",
+ "jsonrpc-core 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -626,7 +626,7 @@ dependencies = [
 [[package]]
 name = "serde_codegen"
 version = "0.6.13"
-source = "git+https://github.com/debris/serde#f1fcd7ed1f3f610c7df0ede2a6928fbc05cf4efb"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aster 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "quasi 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -645,9 +645,9 @@ dependencies = [
 [[package]]
 name = "serde_macros"
 version = "0.6.13"
-source = "git+https://github.com/debris/serde#f1fcd7ed1f3f610c7df0ede2a6928fbc05cf4efb"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde_codegen 0.6.13 (git+https://github.com/debris/serde)",
+ "serde_codegen 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
diff --git a/README.md b/README.md
index 8ef5dce19..2ffb28f45 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@
 # install rocksdb
 add-apt-repository ppa:ethcore/ethcore
 apt-get update
-apt-get install -y --force-yes librocksdb
+apt-get install -y --force-yes librocksdb-dev
 
 # install multirust
 curl -sf https://raw.githubusercontent.com/brson/multirust/master/blastoff.sh | sh -s -- --yes
diff --git a/ethcore/res/ethereum/frontier.json b/ethcore/res/ethereum/frontier.json
index e01c4bb3f..6e31a2fce 100644
--- a/ethcore/res/ethereum/frontier.json
+++ b/ethcore/res/ethereum/frontier.json
@@ -3,7 +3,7 @@
 	"engineName": "Ethash",
 	"params": {
 		"accountStartNonce": "0x00",
-		"frontierCompatibilityModeLimit": "0xf4240fff",
+		"frontierCompatibilityModeLimit": "0x10c8e0",
 		"maximumExtraDataSize": "0x20",
 		"tieBreakingGas": false,
 		"minGasLimit": "0x1388",
diff --git a/ethcore/res/ethereum/frontier_like_test.json b/ethcore/res/ethereum/frontier_like_test.json
index 7ab6a58f4..553bb8018 100644
--- a/ethcore/res/ethereum/frontier_like_test.json
+++ b/ethcore/res/ethereum/frontier_like_test.json
@@ -3,7 +3,7 @@
 	"engineName": "Ethash",
 	"params": {
 		"accountStartNonce": "0x00",
-		"frontierCompatibilityModeLimit": "0xf4240fff",
+		"frontierCompatibilityModeLimit": "0x10c8e0",
 		"maximumExtraDataSize": "0x20",
 		"tieBreakingGas": false,
 		"minGasLimit": "0x1388",
diff --git a/ethcore/res/ethereum/morden.json b/ethcore/res/ethereum/morden.json
index cdcf8c7dc..0d0c2489d 100644
--- a/ethcore/res/ethereum/morden.json
+++ b/ethcore/res/ethereum/morden.json
@@ -3,7 +3,7 @@
 	"engineName": "Ethash",
 	"params": {
 		"accountStartNonce": "0x0100000",
-		"frontierCompatibilityModeLimit": "0xdbba0",
+		"frontierCompatibilityModeLimit": "0x10c8e0",
 		"maximumExtraDataSize": "0x20",
 		"tieBreakingGas": false,
 		"minGasLimit": "0x1388",
diff --git a/rpc/Cargo.toml b/rpc/Cargo.toml
index c506d44b3..0bb255d98 100644
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -9,10 +9,10 @@ authors = ["Ethcore <admin@ethcore.io"]
 
 [dependencies]
 serde = "0.6.7"
-serde_macros = { git = "https://github.com/debris/serde", path = "serde_macros" }
+serde_macros = "0.6.13"
 serde_json = "0.6.0"
-jsonrpc-core = { git = "https://github.com/debris/jsonrpc-core" }
-jsonrpc-http-server = { git = "https://github.com/debris/jsonrpc-http-server" }
+jsonrpc-core = "1.1.2"
+jsonrpc-http-server = "1.1.2"
 ethcore-util = { path = "../util" }
 ethcore = { path = "../ethcore" }
 ethsync = { path = "../sync" }
diff --git a/sync/src/tests/chain.rs b/sync/src/tests/chain.rs
index 5ee5df831..1dd9a1e78 100644
--- a/sync/src/tests/chain.rs
+++ b/sync/src/tests/chain.rs
@@ -160,3 +160,14 @@ fn propagade_blocks() {
 	// NEW_BLOCK_PACKET
 	assert_eq!(0x07, net.peer(0).queue[0].packet_id);
 }
+
+#[test]
+fn restart_on_malformed_block() {
+	let mut net = TestNet::new(2);
+	net.peer_mut(1).chain.add_blocks(10, false);
+	net.peer_mut(1).chain.corrupt_block(6);
+	net.sync_steps(10);
+
+	assert_eq!(net.peer(0).chain.chain_info().best_block_number, 4);
+}
+
diff --git a/sync/src/tests/helpers.rs b/sync/src/tests/helpers.rs
index d8cd5e54a..c561b65a3 100644
--- a/sync/src/tests/helpers.rs
+++ b/sync/src/tests/helpers.rs
@@ -71,6 +71,17 @@ impl TestBlockChainClient {
 		}
 	}
 
+	pub fn corrupt_block(&mut self, n: BlockNumber) {
+		let hash = self.block_hash(BlockId::Number(n)).unwrap();
+		let mut header: BlockHeader = decode(&self.block_header(BlockId::Number(n)).unwrap());
+		header.parent_hash = H256::new();
+		let mut rlp = RlpStream::new_list(3);
+		rlp.append(&header);
+		rlp.append_raw(&rlp::NULL_RLP, 1);
+		rlp.append_raw(&rlp::NULL_RLP, 1);
+		self.blocks.write().unwrap().insert(hash, rlp.out());
+	}
+
 	pub fn block_hash_delta_minus(&mut self, delta: usize) -> H256 {
 		let blocks_read = self.numbers.read().unwrap();
 		let index = blocks_read.len() - delta;