diff --git a/kvdb-rocksdb/CHANGELOG.md b/kvdb-rocksdb/CHANGELOG.md
index f2754de3b..f7cd5a5e9 100644
--- a/kvdb-rocksdb/CHANGELOG.md
+++ b/kvdb-rocksdb/CHANGELOG.md
@@ -6,6 +6,13 @@ The format is based on [Keep a Changelog].
 
 ## [Unreleased]
 
+## [0.4.2] - 2019-02-04
+### Fixes
+- Fixed `iter_from_prefix` being slow. [#326](https://github.com/paritytech/parity-common/pull/326)
+
+## [0.4.1] - 2019-01-06
+- Updated features and feature dependencies. [#307](https://github.com/paritytech/parity-common/pull/307)
+
 ## [0.4.0] - 2019-01-03
 - Add I/O statistics for RocksDB. [#294](https://github.com/paritytech/parity-common/pull/294)
 - Support querying memory footprint via `MallocSizeOf` trait. [#292](https://github.com/paritytech/parity-common/pull/292)
diff --git a/kvdb-rocksdb/Cargo.toml b/kvdb-rocksdb/Cargo.toml
index d7cef5999..797203ffe 100644
--- a/kvdb-rocksdb/Cargo.toml
+++ b/kvdb-rocksdb/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "kvdb-rocksdb"
-version = "0.4.1"
+version = "0.4.2"
 authors = ["Parity Technologies <admin@parity.io>"]
 repository = "https://github.com/paritytech/parity-common"
 description = "kvdb implementation backed by RocksDB"
diff --git a/kvdb-rocksdb/src/lib.rs b/kvdb-rocksdb/src/lib.rs
index d478a0c6d..40ee0f595 100644
--- a/kvdb-rocksdb/src/lib.rs
+++ b/kvdb-rocksdb/src/lib.rs
@@ -616,7 +616,7 @@ impl Database {
 		// We're not using "Prefix Seek" mode, so the iterator will return
 		// keys not starting with the given prefix as well,
 		// see https://github.com/facebook/rocksdb/wiki/Prefix-Seek-API-Changes
-		optional.into_iter().flat_map(identity).filter(move |(k, _)| k.starts_with(prefix))
+		optional.into_iter().flat_map(identity).take_while(move |(k, _)| k.starts_with(prefix))
 	}
 
 	/// Close the database