diff --git a/Cargo.lock b/Cargo.lock
index 2b3d9ccb7..b0c9e5eb3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,7 +2,7 @@
 name = "parity"
 version = "1.2.0"
 dependencies = [
- "clippy 0.0.64 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.67 (registry+https://github.com/rust-lang/crates.io-index)",
  "ctrlc 1.1.1 (git+https://github.com/ethcore/rust-ctrlc.git)",
  "daemonize 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -119,7 +119,7 @@ dependencies = [
 
 [[package]]
 name = "clippy"
-version = "0.0.64"
+version = "0.0.67"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "quine-mc_cluskey 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -147,11 +147,6 @@ dependencies = [
  "url 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "crossbeam"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "crossbeam"
 version = "0.2.9"
@@ -235,8 +230,8 @@ name = "ethcore"
 version = "1.2.0"
 dependencies = [
  "bloomchain 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.64 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.2.0",
  "ethcore-devtools 1.2.0",
@@ -296,7 +291,7 @@ dependencies = [
 name = "ethcore-rpc"
 version = "1.2.0"
 dependencies = [
- "clippy 0.0.64 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.67 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.2.0",
  "ethcore 1.2.0",
  "ethcore-util 1.2.0",
@@ -321,7 +316,7 @@ dependencies = [
  "arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "bigint 0.1.0",
  "chrono 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.64 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.67 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "elastic-array 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -354,7 +349,7 @@ dependencies = [
 name = "ethcore-webapp"
 version = "1.2.0"
 dependencies = [
- "clippy 0.0.64 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.67 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-rpc 1.2.0",
  "ethcore-util 1.2.0",
  "hyper 0.9.3 (git+https://github.com/ethcore/hyper)",
@@ -384,7 +379,7 @@ dependencies = [
 name = "ethminer"
 version = "1.2.0"
 dependencies = [
- "clippy 0.0.64 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.67 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.2.0",
  "ethcore-util 1.2.0",
@@ -398,7 +393,7 @@ dependencies = [
 name = "ethsync"
 version = "1.2.0"
 dependencies = [
- "clippy 0.0.64 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.67 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.2.0",
  "ethcore-util 1.2.0",
diff --git a/Cargo.toml b/Cargo.toml
index af97737e5..6d3ddf357 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ daemonize = "0.2"
 num_cpus = "0.2"
 number_prefix = "0.2"
 rpassword = "0.2.1"
-clippy = { version = "0.0.64", optional = true}
+clippy = { version = "0.0.67", optional = true}
 ethcore = { path = "ethcore" }
 ethcore-util = { path = "util" }
 ethsync = { path = "sync" }
diff --git a/ethcore/Cargo.toml b/ethcore/Cargo.toml
index d0b1927f6..795eaf90f 100644
--- a/ethcore/Cargo.toml
+++ b/ethcore/Cargo.toml
@@ -22,8 +22,8 @@ ethcore-util = { path = "../util" }
 evmjit = { path = "../evmjit", optional = true }
 ethash = { path = "../ethash" }
 num_cpus = "0.2"
-clippy = { version = "0.0.64", optional = true}
-crossbeam = "0.1.5"
+clippy = { version = "0.0.67", optional = true}
+crossbeam = "0.2.9"
 lazy_static = "0.1"
 ethcore-devtools = { path = "../devtools" }
 ethjson = { path = "../json" }
diff --git a/ethcore/src/lib.rs b/ethcore/src/lib.rs
index 0b62ec4fb..f443647bd 100644
--- a/ethcore/src/lib.rs
+++ b/ethcore/src/lib.rs
@@ -27,6 +27,10 @@
 #![cfg_attr(feature="dev", allow(clone_on_copy))]
 // In most cases it expresses function flow better
 #![cfg_attr(feature="dev", allow(if_not_else))]
+// TODO [todr] a lot of warnings to be fixed
+#![cfg_attr(feature="dev", allow(needless_borrow))]
+#![cfg_attr(feature="dev", allow(assign_op_pattern))]
+
 
 //! Ethcore library
 //!
diff --git a/json/Cargo.toml b/json/Cargo.toml
index e6b914f4f..93b86cedb 100644
--- a/json/Cargo.toml
+++ b/json/Cargo.toml
@@ -10,7 +10,7 @@ rustc-serialize = "0.3"
 serde = "0.7.0"
 serde_json = "0.7.0"
 serde_macros = { version = "0.7.0", optional = true }
-clippy = { version = "0.0.64", optional = true}
+clippy = { version = "0.0.67", optional = true}
 
 [build-dependencies]
 serde_codegen = { version = "0.7.0", optional = true }
diff --git a/miner/Cargo.toml b/miner/Cargo.toml
index cf28fd03e..d42753a39 100644
--- a/miner/Cargo.toml
+++ b/miner/Cargo.toml
@@ -17,7 +17,7 @@ log = "0.3"
 env_logger = "0.3"
 rustc-serialize = "0.3"
 rayon = "0.3.1"
-clippy = { version = "0.0.64", optional = true}
+clippy = { version = "0.0.67", optional = true}
 
 [features]
 default = []
diff --git a/rpc/Cargo.toml b/rpc/Cargo.toml
index c4de059bf..0f1f6925a 100644
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -22,7 +22,7 @@ ethminer = { path = "../miner" }
 rustc-serialize = "0.3"
 transient-hashmap = "0.1"
 serde_macros = { version = "0.7.0", optional = true }
-clippy = { version = "0.0.64", optional = true}
+clippy = { version = "0.0.67", optional = true}
 json-ipc-server = { git = "https://github.com/ethcore/json-ipc-server.git" }
 
 [build-dependencies]
diff --git a/sync/Cargo.toml b/sync/Cargo.toml
index cb9190f75..b51bed259 100644
--- a/sync/Cargo.toml
+++ b/sync/Cargo.toml
@@ -10,7 +10,7 @@ authors = ["Ethcore <admin@ethcore.io"]
 [dependencies]
 ethcore-util = { path = "../util" }
 ethcore = { path = "../ethcore" }
-clippy = { version = "0.0.64", optional = true}
+clippy = { version = "0.0.67", optional = true}
 ethminer = { path = "../miner" }
 log = "0.3"
 env_logger = "0.3"
diff --git a/util/Cargo.toml b/util/Cargo.toml
index 0936eae16..1ed4e8e61 100644
--- a/util/Cargo.toml
+++ b/util/Cargo.toml
@@ -28,7 +28,7 @@ crossbeam = "0.2"
 slab = "0.1"
 sha3 = { path = "sha3" }
 serde = "0.7.0"
-clippy = { version = "0.0.64", optional = true}
+clippy = { version = "0.0.67", optional = true}
 json-tests = { path = "json-tests" }
 igd = "0.4.2"
 ethcore-devtools = { path = "../devtools" }
diff --git a/util/src/lib.rs b/util/src/lib.rs
index a97282198..a8f74b5a4 100644
--- a/util/src/lib.rs
+++ b/util/src/lib.rs
@@ -29,6 +29,10 @@
 #![cfg_attr(feature="dev", allow(clone_on_copy))]
 // In most cases it expresses function flow better
 #![cfg_attr(feature="dev", allow(if_not_else))]
+// TODO [todr] a lot of warnings to be fixed
+#![cfg_attr(feature="dev", allow(needless_borrow))]
+#![cfg_attr(feature="dev", allow(assign_op_pattern))]
+
 
 //! Ethcore-util library
 //!
diff --git a/webapp/Cargo.toml b/webapp/Cargo.toml
index 093136ea4..fe6fb9bf6 100644
--- a/webapp/Cargo.toml
+++ b/webapp/Cargo.toml
@@ -20,7 +20,7 @@ parity-webapp = { git = "https://github.com/ethcore/parity-webapp.git" }
 parity-status = { git = "https://github.com/ethcore/parity-status.git", version = "0.4.1" }
 parity-idmanager = { git = "https://github.com/ethcore/parity-idmanager-rs.git", version = "0.1.3" }
 parity-wallet = { git = "https://github.com/ethcore/parity-wallet.git", version = "0.3.0", optional = true }
-clippy = { version = "0.0.64", optional = true}
+clippy = { version = "0.0.67", optional = true}
 
 [features]
 default = ["parity-wallet"]