diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66de6109..a3e22c86 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## v9.0.1 4th February 2021
+
+### Changed
+- Deprecate `ActiveRecord::Base.default_timezone` in favour of `ActiveRecord.default_timezone` [#446](https://github.com/gocardless/statesman/pull/446)
+
 ## v9.0.0 9th August 2021
 
 ### Added
diff --git a/lib/statesman/version.rb b/lib/statesman/version.rb
index 400f1a68..c92568da 100644
--- a/lib/statesman/version.rb
+++ b/lib/statesman/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Statesman
-  VERSION = "9.0.0"
+  VERSION = "9.0.1"
 end