diff --git a/Cargo.lock b/Cargo.lock
index d68c5c121..8bf57cb6a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -93,16 +93,6 @@ dependencies = [
  "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "clippy"
-version = "0.0.49"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "regex-syntax 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "semver 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-normalization 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "clippy"
 version = "0.0.50"
@@ -300,7 +290,7 @@ dependencies = [
 name = "ethminer"
 version = "0.9.99"
 dependencies = [
- "clippy 0.0.49 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.50 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 0.9.99",
  "ethcore-util 0.9.99",
diff --git a/sync/src/chain.rs b/sync/src/chain.rs
index d06a34764..6045a23d9 100644
--- a/sync/src/chain.rs
+++ b/sync/src/chain.rs
@@ -1616,7 +1616,7 @@ mod tests {
 		let mut io = TestIo::new(&mut client, &mut queue, None);
 
 		// when
-		sync.chain_new_blocks(&mut io, &[], &good_blocks, &[], &[]);
+		sync.chain_new_blocks(&mut io, &[], &[], &[], &good_blocks);
 		assert_eq!(sync.miner.status().transaction_queue_future, 0);
 		assert_eq!(sync.miner.status().transaction_queue_pending, 1);
 		sync.chain_new_blocks(&mut io, &good_blocks, &[], &[], &retracted_blocks);
diff --git a/sync/src/lib.rs b/sync/src/lib.rs
index c47b74b66..1c87da2de 100644
--- a/sync/src/lib.rs
+++ b/sync/src/lib.rs
@@ -164,7 +164,6 @@ impl NetworkProtocolHandler<SyncMessage> for EthSync {
 		self.sync.write().unwrap().maintain_sync(&mut NetSyncIo::new(io, self.chain.deref()));
 	}
 
-	#[allow(single_match)]
 	fn message(&self, io: &NetworkContext<SyncMessage>, message: &SyncMessage) {
 		match *message {
 			SyncMessage::NewChainBlocks { ref imported, ref invalid, ref enacted, ref retracted } => {