diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8098a4b..e460cfe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2.3.0 (2019-11-27)
+
+- Speed up date / time conversion to OA format (#39)
+
 ## 2.2.0 (2019-11-27)
 
 - Allow usage with zip\_tricks 5.x gem (#38)
diff --git a/lib/xlsxtream/version.rb b/lib/xlsxtream/version.rb
index 83700ce..fabee4d 100644
--- a/lib/xlsxtream/version.rb
+++ b/lib/xlsxtream/version.rb
@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 module Xlsxtream
-  VERSION = '2.2.0'.freeze
+  VERSION = '2.3.0'.freeze
 end