diff --git a/Cargo.lock b/Cargo.lock
index aa4f0a902..56bd823c1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -11,7 +11,6 @@ dependencies = [
  "ethcore-devtools 1.1.0",
  "ethcore-rpc 1.1.0",
  "ethcore-util 1.1.0",
- "ethjson 0.1.0",
  "ethminer 1.1.0",
  "ethsync 1.1.0",
  "fdlimit 0.1.0",
@@ -20,7 +19,6 @@ dependencies = [
  "rpassword 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -43,10 +41,10 @@ dependencies = [
 
 [[package]]
 name = "aster"
-version = "0.13.1"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "syntex_syntax 0.29.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex_syntax 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -54,7 +52,7 @@ name = "bigint"
 version = "0.1.0"
 dependencies = [
  "arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -141,7 +139,7 @@ source = "git+https://github.com/tomusdrw/rust-ctrlc.git#f4927770f89eca80ec25091
 dependencies = [
  "kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -165,7 +163,7 @@ name = "docopt"
 version = "0.6.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "regex 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "strsim 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -181,7 +179,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -218,7 +216,7 @@ dependencies = [
  "ethcore-devtools 1.1.0",
  "ethcore-util 1.1.0",
  "ethjson 0.1.0",
- "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -244,14 +242,14 @@ dependencies = [
  "ethcore-util 1.1.0",
  "ethminer 1.1.0",
  "ethsync 1.1.0",
- "jsonrpc-core 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-http-server 3.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-http-server 3.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_codegen 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_codegen 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "syntex 0.29.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "transient-hashmap 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -268,7 +266,7 @@ dependencies = [
  "env_logger 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "eth-secp256k1 0.5.4 (git+https://github.com/ethcore/rust-secp256k1)",
  "ethcore-devtools 1.1.0",
- "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "igd 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "json-tests 0.1.0",
@@ -297,9 +295,9 @@ dependencies = [
  "ethcore-util 1.1.0",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_codegen 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_codegen 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "syntex 0.29.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -325,7 +323,7 @@ dependencies = [
  "ethcore 1.1.0",
  "ethcore-util 1.1.0",
  "ethminer 1.1.0",
- "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -355,11 +353,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "heapsize"
-version = "0.3.3"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -391,27 +388,27 @@ dependencies = [
  "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
  "traitobject 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicase 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 0.2.38 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "hyper"
-version = "0.7.2"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cookie 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "httparse 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "mime 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "solicit 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
  "traitobject 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicase 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 0.5.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -422,7 +419,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hyper 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "xml-rs 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)",
  "xmltree 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -442,23 +439,23 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-core"
-version = "2.0.0"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "serde 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_codegen 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_codegen 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "syntex 0.29.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "jsonrpc-http-server"
-version = "3.0.0"
+version = "3.0.1"
 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 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicase 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hyper 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jsonrpc-core 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -466,7 +463,7 @@ name = "kernel32-sys"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -498,7 +495,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "librocksdb-sys"
 version = "0.2.3"
-source = "git+https://github.com/arkpar/rust-rocksdb.git#ebb602fc74b4067f9f51310bdc0401b8e59b7156"
+source = "git+https://github.com/arkpar/rust-rocksdb.git#ae44ef33ed1358ffc79aa05ed77839d555daba33"
 dependencies = [
  "libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -533,6 +530,14 @@ dependencies = [
  "serde 0.6.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "mime"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "mio"
 version = "0.5.0"
@@ -542,11 +547,11 @@ dependencies = [
  "libc 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -555,20 +560,20 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "net2"
-version = "0.2.22"
+version = "0.2.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -667,20 +672,20 @@ dependencies = [
 
 [[package]]
 name = "quasi"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "syntex_syntax 0.29.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex_syntax 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "quasi_codegen"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "aster 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "syntex 0.29.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "syntex_syntax 0.29.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "aster 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex_syntax 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -703,7 +708,7 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "0.1.56"
+version = "0.1.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -720,7 +725,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "rocksdb"
 version = "0.4.3"
-source = "git+https://github.com/arkpar/rust-rocksdb.git#ebb602fc74b4067f9f51310bdc0401b8e59b7156"
+source = "git+https://github.com/arkpar/rust-rocksdb.git#ae44ef33ed1358ffc79aa05ed77839d555daba33"
 dependencies = [
  "libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "librocksdb-sys 0.2.3 (git+https://github.com/arkpar/rust-rocksdb.git)",
@@ -734,7 +739,7 @@ dependencies = [
  "kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "termios 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -790,14 +795,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde_codegen"
-version = "0.7.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "aster 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "quasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "quasi_codegen 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "syntex 0.29.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "syntex_syntax 0.29.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "aster 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quasi 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quasi_codegen 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex_syntax 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -837,18 +842,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "syntex"
-version = "0.29.0"
+version = "0.30.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "syntex_syntax 0.29.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntex_syntax 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "syntex_syntax"
-version = "0.29.1"
+version = "0.30.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -867,7 +872,7 @@ version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -885,7 +890,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -921,7 +926,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "unicase"
-version = "1.3.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -992,7 +997,7 @@ dependencies = [
 
 [[package]]
 name = "winapi"
-version = "0.2.5"
+version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1005,7 +1010,7 @@ name = "ws2_32-sys"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 62a3c31c7..e468799ea 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,8 +27,6 @@ ethsync = { path = "sync" }
 ethminer = { path = "miner" }
 ethcore-devtools = { path = "devtools" }
 ethcore-rpc = { path = "rpc", optional = true }
-ethjson = { path = "json" }
-serde_json = "0.7.0"
 
 [features]
 default = ["rpc"]
@@ -41,10 +39,6 @@ travis-nightly = ["ethcore/json-tests", "dev"]
 path = "parity/main.rs"
 name = "parity"
 
-[[bin]]
-path = "parity/rpctest.rs"
-name = "rpctest"
-
 [profile.release]
 debug = false
 lto = false
diff --git a/json/Cargo.toml b/json/Cargo.toml
index 91f8b8431..7887f2cea 100644
--- a/json/Cargo.toml
+++ b/json/Cargo.toml
@@ -14,7 +14,7 @@ clippy = { version = "0.0.54", optional = true }
 
 [build-dependencies]
 serde_codegen = { version = "0.7.0", optional = true }
-syntex = "0.29.0"
+syntex = "0.30.0"
 
 [features]
 default = ["serde_codegen"]
diff --git a/rpc/Cargo.toml b/rpc/Cargo.toml
index ca8004728..c28f598fd 100644
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -26,7 +26,7 @@ clippy = { version = "0.0.54", optional = true }
 
 [build-dependencies]
 serde_codegen = { version = "0.7.0", optional = true }
-syntex = "0.29.0"
+syntex = "0.30.0"
 
 [features]
 default = ["serde_codegen"]
diff --git a/rpc/rpctest/Cargo.toml b/rpc/rpctest/Cargo.toml
new file mode 100644
index 000000000..5b8f7f845
--- /dev/null
+++ b/rpc/rpctest/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+description = "Rpc test client."
+name = "rpctest"
+version = "1.1.0"
+license = "GPL-3.0"
+authors = ["Ethcore <admin@ethcore.io>"]
+
+[dependencies]
+ctrlc = { git = "https://github.com/tomusdrw/rust-ctrlc.git" }
+docopt = "0.6"
+rustc-serialize = "0.3"
+ethcore = { path = "../../ethcore" }
+ethcore-devtools = { path = "../../devtools" }
+ethcore-rpc = { path = ".." }
+ethcore-util = { path = "../../util" }
+ethjson = { path = "../../json" }
+serde_json = "0.7.0"
diff --git a/parity/rpctest.rs b/rpc/rpctest/src/main.rs
similarity index 100%
rename from parity/rpctest.rs
rename to rpc/rpctest/src/main.rs