diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4994e7b9..adac358f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,30 @@
 # Change Log
 All notable changes to this project will be documented in this file.
 
-## [6.0.0] - date TBD ##
+## [6.0.0] - 2019-06-04 ##
 ### BREAKING CHANGE
-- The sinatra gem is no longer specified as a dependency of this gem.
-  If you would like to use the inbound processing, you must add this gem
-  to your Gemfile. e.g. `gem 'sinatra', '>= 1.4.7', '< 3'`
+- [PR #284](https://github.com/sendgrid/sendgrid-ruby/pull/284): The sinatra gem is no longer specified as a dependency of this gem. If you would like to use the inbound processing, please follow the [upgrade guide](https://github.com/sendgrid/sendgrid-ruby/blob/master/UPGRADE.md). Big thanks to [@jjb](https://github.com/jjb) for the PR!
+
+### Added
+- [PR #271](https://github.com/sendgrid/sendgrid-ruby/pull/271): Add ability to impersonate a subuser. Big thanks to [@danilospa](https://github.com/danilospa) for the PR!
+- [PR #278](https://github.com/sendgrid/sendgrid-ruby/pull/278): Make SendGrid permissions management easy. Big thanks to [@sony-mathew](https://github.com/sony-mathew) for the PR!
+- [PR #343](https://github.com/sendgrid/sendgrid-ruby/pull/343) and [PR #345](https://github.com/sendgrid/sendgrid-ruby/pull/345): Update README.md with examples for dynamic templates and corrections to the old legacy template example. Big thanks to [@kylearoberts](https://github.com/kylearoberts) for the PR!
+- [PR #216](https://github.com/sendgrid/sendgrid-ruby/pull/216): Get unassigned IPs example. Big thanks to [@cristianossd](https://github.com/cristianossd) for the PR!
+- [PR #231](https://github.com/sendgrid/sendgrid-ruby/pull/231): Add support for IO objects set as Attachment content. Big thanks to [@awj](https://github.com/awj) for the PR!
+- [PR #232](https://github.com/sendgrid/sendgrid-ruby/pull/232): Add method to check email content for secret keys. Big thanks to [@jaredsilver](https://github.com/jaredsilver) for the PR!
+- [PR #236](https://github.com/sendgrid/sendgrid-ruby/pull/236): Add an IpManagement helper. Big thanks to [@brokenthumbs](https://github.com/brokenthumbs) for the PR!
+- [PR #264](https://github.com/sendgrid/sendgrid-ruby/pull/264): Add Email Statistics helper example. Big thanks to [@jeremyjung](https://github.com/jeremyjung) for the PR!
+- [PR #246](https://github.com/sendgrid/sendgrid-ruby/pull/246): Modified Mail Class calling examples with SendGrid::Mail. Big thanks to [@rohan-techfreak](https://github.com/rohan-techfreak) for the PR!
+- [PR #268](https://github.com/sendgrid/sendgrid-ruby/pull/268): Added Code Review to CONTRIBUTING.md. Big thanks to [@mptap](https://github.com/mptap) for the PR!
+- [PR #276](https://github.com/sendgrid/sendgrid-ruby/pull/276): Codebase Improvement: Use attr_accessor instead of getters and setters. Big thanks to [@rahul26goyal](https://github.com/rahul26goyal) for the PR!
+- [PR #365](https://github.com/sendgrid/sendgrid-ruby/pull/365): Add our Developer Experience Engineer career opportunity to the README. Big thanks to [@mptap](https://github.com/mptap) for the PR!
+
+### Fixes
+- [PR #262](https://github.com/sendgrid/sendgrid-ruby/pull/262): Fix CONTRIBUTING.md formatting. Big thanks to [@thepriefy](https://github.com/thepriefy) for the PR!
+- [PR #277](https://github.com/sendgrid/sendgrid-ruby/pull/277): Fix travis warning. Big thanks to [@rahul26goyal](https://github.com/rahul26goyal) for the PR!
+- [PR #303](https://github.com/sendgrid/sendgrid-ruby/pull/303): Update readme tags and fix minor test failures. Big thanks to [@af4ro](https://github.com/af4ro) for the PR!
+- [PR #370](https://github.com/sendgrid/sendgrid-ruby/pull/370): Remove references to "Whitelabel". Big thanks to [@crweiner](https://github.com/crweiner) for the PR!
+- [PR #383](https://github.com/sendgrid/sendgrid-ruby/pull/383): Correct endpoint for single spam report requests. Big thanks to [@bermannoah](https://github.com/bermannoah) for the PR!
 
 ## [5.3.0] - 2018-10-12 ##
 ### Added
diff --git a/UPGRADE.md b/UPGRADE.md
new file mode 100644
index 00000000..076f9a60
--- /dev/null
+++ b/UPGRADE.md
@@ -0,0 +1,5 @@
+# Upgrading from 5.X to 6.X
+
+Note, this is only necessary if you are using inbound processing.
+
+* Add this gem to your Gemfile: `gem 'sinatra', '>= 1.4.7', '< 3'`
\ No newline at end of file
diff --git a/lib/sendgrid/version.rb b/lib/sendgrid/version.rb
index 0d271849..8750fe09 100644
--- a/lib/sendgrid/version.rb
+++ b/lib/sendgrid/version.rb
@@ -1,3 +1,3 @@
 module SendGrid
-  VERSION = '5.3.0'
+  VERSION = '6.0.0'
 end
diff --git a/test/sendgrid/test_sendgrid-ruby.rb b/test/sendgrid/test_sendgrid-ruby.rb
index 1029af10..7df30ec5 100644
--- a/test/sendgrid/test_sendgrid-ruby.rb
+++ b/test/sendgrid/test_sendgrid-ruby.rb
@@ -58,7 +58,7 @@ def test_init
         assert_equal(test_headers, sg.request_headers)
         assert_equal("v3", sg.version)
         assert_equal(subuser, sg.impersonate_subuser)
-        assert_equal("5.3.0", SendGrid::VERSION)
+        assert_equal("6.0.0", SendGrid::VERSION)
         assert_instance_of(SendGrid::Client, sg.client)
     end