diff --git a/CHANGELOG.md b/CHANGELOG.md
index e73248b..bda4365 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,12 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.4.2] - 2024-07-13
+
+### Changed
+
+* Optimize the processing of multichannel arrays
+
 ## [0.4.1] - 2024-07-09
 
 ### Fixed
diff --git a/README.md b/README.md
index 238abbe..31a9c81 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # numpy-rms: a fast function for calculating a series of Root Mean Square (RMS) values
 
 * Written in C and takes advantage of AVX (on x86-64) or NEON (on ARM) for speed
-* The fast implementation is tailored for contiguous 1-dimensional float32 arrays
+* The fast implementation is tailored for C-contiguous 1-dimensional and 2-dimensional float32 arrays
 
 # Installation
 
@@ -27,11 +27,11 @@ print(rms_series.shape)  # (4,)
 
 # Changelog
 
-## [0.4.1] - 2024-07-09
+## [0.4.2] - 2024-07-13
 
-### Fixed
+### Changed
 
-* Fix multichannel processing in fallback function
+* Optimize the processing of multichannel arrays
 
 For the complete changelog, go to [CHANGELOG.md](CHANGELOG.md)
 
diff --git a/pyproject.toml b/pyproject.toml
index 0fc90a9..0edaa77 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ name = "numpy-rms"
 authors = [
     {name = "Iver Jordal"}
 ]
-version = "0.4.1"
+version = "0.4.2"
 description = "A fast python library for calculating the RMS of a NumPy array"
 dependencies = [
     "cffi>=1.0.0",