diff --git a/CHANGELOG.md b/CHANGELOG.md
index 255ac70..eb56e51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 This file is used to list changes made in each version of the postfix cookbook.
 
+## 4.0.0 (2016-09-07)
+
+- Update supported platforms in metadata
+- Remove node name from config file
+- Testing updates
+- Use node.normal vs. node.set to avoid deprecation warnings
+- Require Chef 12+
+
 ## v3.8.0 (2016-04-01)
 
 - Updated attributes to use  node.default_unless instead of node.default to be more wrapper friendly
diff --git a/metadata.rb b/metadata.rb
index 3160cdf..66e3111 100644
--- a/metadata.rb
+++ b/metadata.rb
@@ -4,7 +4,7 @@ maintainer_email 'cookbooks@chef.io'
 license 'Apache 2.0'
 description 'Installs and configures postfix for client or outbound relayhost, or to do SASL auth'
 long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
-version '3.8.0'
+version '4.0.0'
 
 recipe 'postfix', 'Installs and configures postfix'
 recipe 'postfix::sasl_auth', 'Set up postfix to auth to a server with sasl'