diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c8c4d735..74607bf51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 3.22.0 - 2018-08-15
+* [#674](https://github.com/stripe/stripe-ruby/pull/674) Use integer-indexed encoding for all arrays
+
 ## 3.21.0 - 2018-08-03
 * [#671](https://github.com/stripe/stripe-ruby/pull/671) Add cancel support for topups
 
diff --git a/VERSION b/VERSION
index 6075c9a9f..a7e7070f8 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.21.0
+3.22.0
diff --git a/lib/stripe/version.rb b/lib/stripe/version.rb
index c58cb0f3e..9c4196afc 100644
--- a/lib/stripe/version.rb
+++ b/lib/stripe/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Stripe
-  VERSION = "3.21.0".freeze
+  VERSION = "3.22.0".freeze
 end