diff --git a/Cargo.lock b/Cargo.lock
index 0a2e21df2..8448b0a97 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -20,7 +20,7 @@ dependencies = [
  "ethsync 1.3.0",
  "fdlimit 0.1.0",
  "hyper 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "json-ipc-server 0.2.3 (git+https://github.com/ethcore/json-ipc-server.git)",
+ "json-ipc-server 0.2.4 (git+https://github.com/ethcore/json-ipc-server.git)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "number_prefix 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -344,7 +344,7 @@ dependencies = [
  "ethcore-util 1.3.0",
  "ethjson 0.1.0",
  "ethsync 1.3.0",
- "json-ipc-server 0.2.3 (git+https://github.com/ethcore/json-ipc-server.git)",
+ "json-ipc-server 0.2.4 (git+https://github.com/ethcore/json-ipc-server.git)",
  "jsonrpc-core 2.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-http-server 5.1.0 (git+https://github.com/ethcore/jsonrpc-http-server.git)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -594,8 +594,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "json-ipc-server"
-version = "0.2.3"
-source = "git+https://github.com/ethcore/json-ipc-server.git#bfe16b66b2e9412d153b1ea53bc078d74037da7f"
+version = "0.2.4"
+source = "git+https://github.com/ethcore/json-ipc-server.git#902b031b8f50a59ecb4f389cbec1d264a98556bc"
 dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",