diff --git a/Cargo.lock b/Cargo.lock
index c91ddbc5..1ef5acda 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -52,7 +52,7 @@ dependencies = [
  "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "tiny-keccak 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 1.8.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "trace-time 0.1.0",
  "transient-hashmap 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "trie-standardmap 0.1.0",
@@ -130,7 +130,7 @@ dependencies = [
  "solidity 0.2.0",
  "stats 0.1.0",
  "tiny-keccak 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 1.8.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "trace-time 0.1.0",
  "transient-hashmap 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -193,7 +193,7 @@ dependencies = [
  "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "term_size 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "textwrap 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 1.8.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -240,11 +240,16 @@ name = "atty"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "avm"
 version = "0.2.1"
@@ -253,7 +258,7 @@ dependencies = [
  "blake2b 0.1.0",
  "cmake 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "crypto 0.1.0",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-bigint 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rjni 0.0.1",
@@ -277,7 +282,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace-sys 0.1.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -288,7 +293,7 @@ version = "0.1.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -499,7 +504,7 @@ name = "crypto"
 version = "0.1.0"
 dependencies = [
  "gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -510,7 +515,7 @@ version = "1.1.1"
 source = "git+https://github.com/paritytech/rust-ctrlc.git#b523017108bb2d571a7a69bd97bc406e63bc7a9d"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -636,7 +641,7 @@ dependencies = [
  "aion-types 0.1.0",
  "bincode 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cmake 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-bigint 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "patricia-trie 0.1.0",
@@ -654,7 +659,7 @@ name = "fdlimit"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -663,7 +668,7 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heapsize 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -674,7 +679,7 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heapsize 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -695,7 +700,7 @@ name = "flate2"
 version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz-sys 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -836,9 +841,9 @@ dependencies = [
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-reactor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -873,7 +878,7 @@ name = "iovec"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -927,7 +932,7 @@ dependencies = [
  "jsonrpc-core 9.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-2.2)",
  "jsonrpc-server-utils 9.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-2.2)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicase 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -975,7 +980,7 @@ dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicase 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1024,7 +1029,7 @@ dependencies = [
  "dir 0.1.0",
  "itertools 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "key 0.3.0",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1079,7 +1084,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.43"
+version = "0.2.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -1144,7 +1149,7 @@ dependencies = [
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "humantime 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "log-mdc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1186,7 +1191,7 @@ name = "memchr"
 version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1208,7 +1213,7 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1221,10 +1226,10 @@ dependencies = [
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazycell 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1247,7 +1252,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1257,27 +1262,26 @@ version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "miow"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (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 = "miow"
-version = "0.3.2"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "socket2 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1291,11 +1295,11 @@ dependencies = [
 
 [[package]]
 name = "net2"
-version = "0.2.33"
+version = "0.2.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1384,7 +1388,7 @@ name = "num_cpus"
 version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1423,7 +1427,7 @@ dependencies = [
  "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.98 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 1.8.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "uuid 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1440,7 +1444,7 @@ name = "parity-rocksdb"
 version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "local-encoding 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-rocksdb-sys 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1451,7 +1455,7 @@ version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cmake 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "local-encoding 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-snappy-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1462,7 +1466,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cmake 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1474,9 +1478,9 @@ dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-named-pipes 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-named-pipes 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-uds 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1505,7 +1509,7 @@ name = "parking_lot_core"
 version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1531,6 +1535,11 @@ name = "percent-encoding"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "pin-project-lite"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "plain_hasher"
 version = "0.1.0"
@@ -1600,7 +1609,7 @@ version = "0.3.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1610,7 +1619,7 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1621,7 +1630,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1646,7 +1655,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1715,7 +1724,7 @@ dependencies = [
 name = "rjni"
 version = "0.0.1"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1753,7 +1762,7 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "rprompt 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1898,23 +1907,12 @@ name = "smallvec"
 version = "0.6.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "socket2"
-version = "0.3.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "solidity"
 version = "0.2.0"
 dependencies = [
  "cmake 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2002,7 +2000,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2011,7 +2009,7 @@ name = "termion"
 version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2045,7 +2043,7 @@ name = "time"
 version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2060,7 +2058,7 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "0.1.13"
+version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2070,16 +2068,27 @@ dependencies = [
  "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-current-thread 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-fs 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-fs 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-io 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-reactor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-sync 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-tcp 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-threadpool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-timer 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-trace-core 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-udp 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-uds 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "tokio"
+version = "1.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project-lite 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "tokio-codec"
 version = "0.1.1"
@@ -2109,7 +2118,7 @@ dependencies = [
 
 [[package]]
 name = "tokio-fs"
-version = "0.1.3"
+version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2136,7 +2145,7 @@ dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-named-pipes 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2164,6 +2173,15 @@ dependencies = [
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "tokio-sync"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "tokio-tcp"
 version = "0.1.2"
@@ -2202,6 +2220,14 @@ dependencies = [
  "tokio-executor 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "tokio-trace-core"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "tokio-udp"
 version = "0.1.1"
@@ -2224,7 +2250,7 @@ dependencies = [
  "bytes 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-uds 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2431,7 +2457,7 @@ dependencies = [
  "aion-types 0.1.0",
  "avm 0.2.1",
  "fastvm 0.2.0",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm_common 0.1.0",
 ]
@@ -2516,6 +2542,7 @@ dependencies = [
 "checksum antidote 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "34fde25430d87a9388dadbe6e34d7f72a462c8b43ac8d309b42b0a8505d7e2a5"
 "checksum arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)" = "a1e964f9e24d588183fcb43503abda40d288c8657dfc27311516ce2f05675aef"
 "checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
+"checksum autocfg 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 "checksum backtrace 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "89a47830402e9981c5c41223151efcced65a0510c13097c769cede7efb34782a"
 "checksum backtrace-sys 0.1.24 (registry+https://github.com/rust-lang/crates.io-index)" = "c66d56ac8dabd07f6aacdaf633f4b8262f5b3601a810a0dcddffd5c22c69daa0"
 "checksum bigdecimal 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "460825c9e21708024d67c07057cd5560e5acdccac85de0de624a81d3de51bacb"
@@ -2586,7 +2613,7 @@ dependencies = [
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum lazycell 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ddba4c30a78328befecec92fc94970e53b3ae385827d28620f0f5bb2493081e0"
-"checksum libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)" = "76e3a3ef172f1a0b9a9ff0dd1491ae5e6c948b94479a3021819ba7d860c8645d"
+"checksum libc 0.2.126 (registry+https://github.com/rust-lang/crates.io-index)" = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
 "checksum linked-hash-map 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7860ec297f7008ff7a1e3382d7f7e1dcd69efc94751a2284bafc3d013c2aa939"
 "checksum linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ae91b68aebc4ddb91978b11a1b02ddd8602a05ec19002801c5666000e05e0f83"
 "checksum local-encoding 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e1ceb20f39ff7ae42f3ff9795f3986b1daad821caaa1e1732a0944103a5a1a66"
@@ -2604,10 +2631,10 @@ dependencies = [
 "checksum mio-extras 2.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "46e73a04c2fa6250b8d802134d56d554a9ec2922bf977777c805ea5def61ce40"
 "checksum mio-named-pipes 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "f5e374eff525ce1c5b7687c4cef63943e7686524a387933ad27ca7ec43779cb3"
 "checksum mio-uds 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)" = "84c7b5caa3a118a6e34dbac36504503b1e8dc5835e833306b9d6af0e05929f79"
-"checksum miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f2f3b1cf331de6896aabf6e9d55dca90356cc9960cca7eaaf408a355ae919"
-"checksum miow 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c53ec39fa97777f523d4b77815d3f626ce4032f007cdd97f732fc9330c59e471"
+"checksum miow 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ebd808424166322d4a38da87083bfddd3ac4c131334ed55856112eb06d46944d"
+"checksum miow 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
 "checksum multimap 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2eb04b9f127583ed176e163fb9ec6f3e793b87e21deedd5734a69386a18a0151"
-"checksum net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)" = "42550d9fb7b6684a6d404d9fa7250c2eb2646df731d1c06afc06dcee9e1bcf88"
+"checksum net2 0.2.37 (registry+https://github.com/rust-lang/crates.io-index)" = "391630d12b68002ae1e25e8f974306474966550ad82dac6886fb8910c19568ae"
 "checksum nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "9a2228dca57108069a5262f2ed8bd2e82496d2e074a06d1ccc7ce1687b6ae0a2"
 "checksum num 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "4703ad64153382334aa8db57c637364c322d3372e097840c72000dabdcf6156e"
 "checksum num-bigint 0.1.44 (registry+https://github.com/rust-lang/crates.io-index)" = "e63899ad0da84ce718c14936262a41cee2c79c981fc0a0e7c7beb47d5a07e8c1"
@@ -2629,6 +2656,7 @@ dependencies = [
 "checksum parking_lot 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "69376b761943787ebd5cc85a5bc95958651a22609c5c1c2b65de21786baec72b"
 "checksum parking_lot_core 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "4db1a8ccf734a7bce794cc19b3df06ed87ab2f3907036b693c68f56b4d4537fa"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
+"checksum pin-project-lite 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
 "checksum pretty_assertions 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2412f3332a07c7a2a50168988dcc184f32180a9758ad470390e5f55e089f6b6e"
 "checksum proc-macro-hack 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2c725b36c99df7af7bf9324e9c999b9e37d92c8f8caf106d82e1d7953218d2d8"
 "checksum proc-macro-hack-impl 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2b753ad9ed99dd8efeaa7d2fb8453c8f6bc3e54b97966d35f1bc77ca6865254a"
@@ -2673,7 +2701,6 @@ dependencies = [
 "checksum slab 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5f9776d6b986f77b35c6cf846c11ad986ff128fe0b2b63a3628e3755e8d3102d"
 "checksum smallvec 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f90c5e5fe535e48807ab94fc611d323935f39d4660c52b26b96446a7b33aef10"
 "checksum smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ab606a9c5e214920bb66c458cd7be8ef094f813f20fe77a54cc7dbfff220d4b7"
-"checksum socket2 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "962a516af4d3a7c272cb3a1d50a8cc4e5b41802e4ad54cfb7bee8ba61d37d703"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum string 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "00caf261d6f90f588f8450b8e1230fa0d5be49ee6140fdfbcb55335aff350970"
 "checksum strsim 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b4d15c810519a91cf877e7e36e63fe068815c678181439f2f29e2562147c3694"
@@ -2691,18 +2718,21 @@ dependencies = [
 "checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
 "checksum time 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "d825be0eb33fda1a7e68012d51e9c7f451dc1a69391e7fdc197060bb8c56667b"
 "checksum tiny-keccak 1.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e9175261fbdb60781fcd388a4d6cc7e14764a2b629a7ad94abb439aed223a44f"
-"checksum tokio 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "a7817d4c98cc5be21360b3b37d6036fe9b7aefa5b7a201b7b16ff33423822f7d"
+"checksum tokio 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)" = "1021bb1f4150435ab8f222eb7ed37c60b2d57037def63ba43085a79f387512d7"
+"checksum tokio 1.8.4 (registry+https://github.com/rust-lang/crates.io-index)" = "50dae83881bc9b0403dd5b44ea9deed3e939856cc8722d5be37f0d6e5c6d53dd"
 "checksum tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5c501eceaf96f0e1793cf26beb63da3d11c738c4a943fdf3746d81d64684c39f"
 "checksum tokio-current-thread 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f90fcd90952f0a496d438a976afba8e5c205fb12123f813d8ab3aa1c8436638c"
 "checksum tokio-executor 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "c117b6cf86bb730aab4834f10df96e4dd586eff2c3c27d3781348da49e255bde"
-"checksum tokio-fs 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b5cbe4ca6e71cb0b62a66e4e6f53a8c06a6eefe46cc5f665ad6f274c9906f135"
+"checksum tokio-fs 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "297a1206e0ca6302a0eed35b700d292b275256f596e2f3fea7729d5e629b6ff4"
 "checksum tokio-io 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "7392fe0a70d5ce0c882c4778116c519bd5dbaa8a7c3ae3d04578b3afafdcda21"
 "checksum tokio-named-pipes 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9d282d483052288b2308ba5ee795f5673b159c9bdf63c385a05609da782a5eae"
 "checksum tokio-reactor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "4b26fd37f1125738b2170c80b551f69ff6fecb277e6e5ca885e53eec2b005018"
 "checksum tokio-service 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "24da22d077e0f15f55162bdbdc661228c1581892f52074fb242678d015b45162"
+"checksum tokio-sync 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "edfe50152bc8164fcc456dab7891fa9bf8beaf01c5ee7e1dd43a397c3cf87dee"
 "checksum tokio-tcp 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7ad235e9dadd126b2d47f6736f65aa1fdcd6420e66ca63f44177bc78df89f912"
 "checksum tokio-threadpool 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "3929aee321c9220ed838ed6c3928be7f9b69986b0e3c22c972a66dbf8a298c68"
 "checksum tokio-timer 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "4f37f0111d76cc5da132fe9bc0590b9b9cfd079bc7e75ac3846278430a299ff8"
+"checksum tokio-trace-core 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "350c9edade9830dc185ae48ba45667a445ab59f6167ef6d0254ec9d2430d9dd3"
 "checksum tokio-udp 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "43eb534af6e8f37d43ab1b612660df14755c42bd003c5f8d2475ee78cc4600c0"
 "checksum tokio-uds 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "df195376b43508f01570bacc73e13a1de0854dc59e79d1ec09913e8db6dd2a70"
 "checksum toml 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "a0263c6c02c4db6c8f7681f9fd35e90de799ebd4cfdeab77a38f4ff6b3d8c0d9"
diff --git a/Cargo.toml b/Cargo.toml
index 6576a14c..d25cb00b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ serde = "1.0"
 serde_json = "1.0"
 serde_derive = "1.0"
 fdlimit = "0.1"
-tokio = "0.1.13"
+tokio = "1.8.4"
 ctrlc =             { git = "https://github.com/paritytech/rust-ctrlc.git" }
 jsonrpc-core =      { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-2.2" }
 acore =             { path = "core", version = "0.1" }
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 6c52ae04..550ef37a 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -57,7 +57,7 @@ num-bigint = "0.2"
 bytebuffer = "0.2.1"
 transient-hashmap = "0.4"
 futures = "0.1.6"
-tokio = "0.1.11"
+tokio = "1.8.4"
 rand = "0.5.5"
 ctrlc = { git = "https://github.com/paritytech/rust-ctrlc.git" }
 delta-calc = { path = "../util/delta-calc" }
diff --git a/p2p/Cargo.toml b/p2p/Cargo.toml
index cf24c185..80c550c1 100644
--- a/p2p/Cargo.toml
+++ b/p2p/Cargo.toml
@@ -13,7 +13,7 @@ uuid = { version = "0.6.5", features = ["v4"] }
 serde = "1.0.80"
 serde_derive = "1.0.92"
 futures = "0.1.26"
-tokio = "0.1.11"
+tokio = "1.8.4"
 tokio-codec = "0.1.1"
 parking_lot = "0.5"
 acore-bytes =  { path = "../util/bytes" }
diff --git a/rpc/Cargo.toml b/rpc/Cargo.toml
index 201f2087..ad9f3edd 100644
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -17,7 +17,7 @@ serde_json = "1.0"
 tiny-keccak = "1.4.2"
 blake2b = { path = "../util/blake2b"}
 trace-time = { path = "../util/trace-time" }
-tokio = "0.1.13"
+tokio = "1.8.4"
 transient-hashmap = "0.4"
 
 jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-2.2" }