diff --git a/Cargo.lock b/Cargo.lock
index 8e5aea5f7..288decc43 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -286,7 +286,7 @@ dependencies = [
  "ethjson 0.1.0",
  "heapsize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "keccak-hash 0.1.0",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rlp_derive 0.1.0",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -519,7 +519,7 @@ dependencies = [
  "price-info 1.7.0",
  "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rlp_derive 0.1.0",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -604,7 +604,7 @@ dependencies = [
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "patricia-trie 0.1.0",
  "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rlp_derive 0.1.0",
  "serde 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -654,7 +654,7 @@ dependencies = [
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "path 0.1.0",
  "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -741,7 +741,7 @@ dependencies = [
  "memorydb 0.1.1",
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "patricia-trie 0.1.0",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rocksdb 0.4.5 (git+https://github.com/paritytech/rust-rocksdb)",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -862,7 +862,7 @@ dependencies = [
  "macros 0.1.0",
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1220,7 +1220,7 @@ dependencies = [
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "memorydb 0.1.1",
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "util-error 0.1.0",
 ]
 
@@ -1353,7 +1353,7 @@ version = "0.1.0"
 dependencies = [
  "kvdb 0.1.0",
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
 ]
 
 [[package]]
@@ -1366,7 +1366,7 @@ dependencies = [
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rocksdb 0.4.5 (git+https://github.com/paritytech/rust-rocksdb)",
  "tempdir 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1515,7 +1515,7 @@ dependencies = [
  "hashdb 0.1.1",
  "heapsize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "keccak-hash 0.1.0",
- "rlp 0.2.0",
+ "rlp 0.2.1",
 ]
 
 [[package]]
@@ -1947,7 +1947,7 @@ dependencies = [
  "path 0.1.0",
  "pretty_assertions 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rpassword 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rpc-cli 1.4.0",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2060,7 +2060,7 @@ dependencies = [
  "jsonrpc-core 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
  "jsonrpc-http-server 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
  "multihash 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "unicase 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2075,7 +2075,7 @@ dependencies = [
  "kvdb 0.1.0",
  "kvdb-memorydb 0.1.0",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "serde 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2142,7 +2142,7 @@ dependencies = [
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_assertions 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2280,7 +2280,7 @@ dependencies = [
  "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "ring 0.9.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "serde 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2338,7 +2338,7 @@ dependencies = [
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "memorydb 0.1.1",
  "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "triehash 0.1.0",
 ]
 
@@ -2616,7 +2616,7 @@ dependencies = [
 
 [[package]]
 name = "rlp"
-version = "0.2.0"
+version = "0.2.1"
 dependencies = [
  "byteorder 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "elastic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2630,7 +2630,7 @@ name = "rlp_derive"
 version = "0.1.0"
 dependencies = [
  "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3247,7 +3247,7 @@ version = "0.1.0"
 dependencies = [
  "ethcore-bigint 0.2.1",
  "keccak-hash 0.1.0",
- "rlp 0.2.0",
+ "rlp 0.2.1",
 ]
 
 [[package]]
@@ -3350,7 +3350,7 @@ dependencies = [
  "error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-bigint 0.2.1",
  "kvdb 0.1.0",
- "rlp 0.2.0",
+ "rlp 0.2.1",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3400,7 +3400,7 @@ dependencies = [
  "keccak-hash 0.1.0",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "patricia-trie 0.1.0",
- "rlp 0.2.0",
+ "rlp 0.2.1",
 ]
 
 [[package]]
diff --git a/util/memorydb/Cargo.toml b/util/memorydb/Cargo.toml
index 785f16590..4ea50a736 100644
--- a/util/memorydb/Cargo.toml
+++ b/util/memorydb/Cargo.toml
@@ -12,4 +12,4 @@ heapsize = "0.4"
 ethcore-bigint = { version = "0.2", path = "../bigint", features = ["heapsizeof"] }
 keccak-hash = { version = "0.1.0", path = "../hash" }
 hashdb = { version = "0.1.1", path = "../hashdb" }
-rlp = { version = "0.2.0", path = "../rlp" }
+rlp = { version = "0.2.1", path = "../rlp" }
diff --git a/util/patricia_trie/Cargo.toml b/util/patricia_trie/Cargo.toml
index a7b1fa421..ee9d472a0 100644
--- a/util/patricia_trie/Cargo.toml
+++ b/util/patricia_trie/Cargo.toml
@@ -11,7 +11,7 @@ ethcore-bytes = { version = "0.1.0", path = "../bytes" }
 ethcore-bigint = { version = "0.2.1", path = "../bigint" }
 keccak-hash = { version = "0.1.0", path = "../hash" }
 hashdb = { version = "0.1.1", path = "../hashdb" }
-rlp = { version = "0.2.0", path = "../rlp" }
+rlp = { version = "0.2.1", path = "../rlp" }
 triehash = { version = "0.1.0", path = "../triehash" }
 memorydb = { version = "0.1.0", path = "../memorydb" }
 ethcore-logger = { version = "1.9.0", path = "../../logger" }
diff --git a/util/rlp/Cargo.toml b/util/rlp/Cargo.toml
index aa682e469..83ac3a9d6 100644
--- a/util/rlp/Cargo.toml
+++ b/util/rlp/Cargo.toml
@@ -3,12 +3,12 @@ description = "Recursive-length prefix encoding, decoding, and compression"
 repository = "https://github.com/paritytech/parity"
 license = "MIT/Apache-2.0"
 name = "rlp"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["Parity Technologies <admin@parity.io>"]
 
 [dependencies]
 elastic-array = "0.9"
-ethcore-bigint = { path = "../bigint" }
+ethcore-bigint = { version = "0.2.1", path = "../bigint" }
 lazy_static = "0.2"
 rustc-hex = "1.0"
 byteorder = "1.0"
diff --git a/util/triehash/Cargo.toml b/util/triehash/Cargo.toml
index d9ff4809c..53d6b56d8 100644
--- a/util/triehash/Cargo.toml
+++ b/util/triehash/Cargo.toml
@@ -6,6 +6,6 @@ description = "in memory patricia trie operations"
 license = "GPL-3.0"
 
 [dependencies]
-rlp = { version = "0.2", path = "../rlp" }
+rlp = { version = "0.2.1", path = "../rlp" }
 ethcore-bigint = { version = "0.2.1", path = "../bigint" }
 keccak-hash = { version = "0.1", path = "../hash" }