diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7c7262e..b563580 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
-## 2.2.0 [unreleased]
+## 2.2.0
 
-- Added support for enumerables
+- Added support for Arrays and Hashes
 
 ## 2.1.1
 
diff --git a/README.md b/README.md
index 3a4d5e7..191527c 100644
--- a/README.md
+++ b/README.md
@@ -137,7 +137,7 @@ User.group_by_hour_of_day(:created_at, format: "%l %P").count.keys.first # 12 am
 
 Takes a `String`, which is passed to [strftime](http://strfti.me/), or a `Proc`
 
-## Arrays and Hashes [master]
+## Arrays and Hashes
 
 ```ruby
 users.group_by_day{|u| u.created_at } # or group_by_day(&:created_at)
diff --git a/lib/groupdate/version.rb b/lib/groupdate/version.rb
index 5dfb826..935e54b 100644
--- a/lib/groupdate/version.rb
+++ b/lib/groupdate/version.rb
@@ -1,3 +1,3 @@
 module Groupdate
-  VERSION = "2.1.1"
+  VERSION = "2.2.0"
 end
--
libgit2 0.21.0