diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 5eac3fc..660c61e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -5,6 +5,15 @@ 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>`_.
 
 
+[0.2.3]
+-------
+
+Changed
+^^^^^^^
+
+* better allocation performace for all collections
+
+
 [0.2.2]
 -------
 
diff --git a/Cargo.toml b/Cargo.toml
index 832cb50..644519d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "map-macro"
-version = "0.2.2"
+version = "0.2.3"
 authors = ["jofas <jonas@fc-web.de>"]
 edition = "2018"
 license = "MIT"