diff --git a/Cargo.lock b/Cargo.lock
index 625564013..16dac7aed 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2278,7 +2278,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2392,7 +2392,7 @@ dependencies = [
  "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "jni 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "panic_hook 0.1.0",
- "parity-ethereum 2.5.6",
+ "parity-ethereum 2.5.7",
  "tokio 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-current-thread 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2422,7 +2422,7 @@ dependencies = [
 
 [[package]]
 name = "parity-ethereum"
-version = "2.5.6"
+version = "2.5.7"
 dependencies = [
  "ansi_term 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2475,7 +2475,7 @@ dependencies = [
  "parity-rpc 1.12.0",
  "parity-runtime 0.1.0",
  "parity-updater 1.12.0",
- "parity-version 2.5.6",
+ "parity-version 2.5.7",
  "parity-whisper 0.1.0",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_assertions 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2618,7 +2618,7 @@ dependencies = [
  "parity-crypto 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-runtime 0.1.0",
  "parity-updater 1.12.0",
- "parity-version 2.5.6",
+ "parity-version 2.5.7",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_assertions 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2716,7 +2716,7 @@ dependencies = [
  "parity-bytes 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-hash-fetch 1.12.0",
  "parity-path 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "parity-version 2.5.6",
+ "parity-version 2.5.7",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2726,7 +2726,7 @@ dependencies = [
 
 [[package]]
 name = "parity-version"
-version = "2.5.6"
+version = "2.5.7"
 dependencies = [
  "parity-bytes 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 9bd8d16f9..28e26fadf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 description = "Parity Ethereum client"
 name = "parity-ethereum"
 # NOTE Make sure to update util/version/Cargo.toml as well
-version = "2.5.6"
+version = "2.5.7"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 
diff --git a/ethcore/src/trace/executive_tracer.rs b/ethcore/src/trace/executive_tracer.rs
index 015deaea0..dbb2bc1ec 100644
--- a/ethcore/src/trace/executive_tracer.rs
+++ b/ethcore/src/trace/executive_tracer.rs
@@ -18,6 +18,7 @@
 
 use ethereum_types::{U256, Address};
 use vm::{Error as VmError, ActionParams};
+use log::{debug, warn};
 use trace::trace::{Call, Create, Action, Res, CreateResult, CallResult, VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff, Suicide, Reward, RewardType};
 use trace::{Tracer, VMTracer, FlatTrace};
 
@@ -245,7 +246,19 @@ impl VMTracer for ExecutiveVMTracer {
 	}
 
 	fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
-		let mem_diff = self.last_mem_written.take().map(|(o, s)| (o, &(mem[o..o+s])));
+		let mem_diff = self.last_mem_written.take().map(|(o, s)| {
+			if o + s > mem.len() {
+				warn!(
+					target: "trace",
+					"Last mem written is out of bounds {} (mem is {})",
+					o + s,
+					mem.len(),
+				);
+				(o, &[][..])
+			} else {
+				(o, &(mem[o..o+s]))
+			}
+		});
 		let store_diff = self.last_store_written.take();
 		Self::with_trace_in_depth(&mut self.data, self.depth, move |trace| {
 			let ex = VMExecutedOperation {
diff --git a/util/version/Cargo.toml b/util/version/Cargo.toml
index 5cfd5b8b9..77f159dc9 100644
--- a/util/version/Cargo.toml
+++ b/util/version/Cargo.toml
@@ -3,7 +3,7 @@
 [package]
 name = "parity-version"
 # NOTE: this value is used for Parity Ethereum version string (via env CARGO_PKG_VERSION)
-version = "2.5.6"
+version = "2.5.7"
 authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"