diff --git a/CHANGELOG.md b/CHANGELOG.md
index f6ecf27cf..5ed19ba6d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,12 @@ All notable changes to this project will be documented in this file.
 
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [5.1.1] - 2016-10-11 ##
+### Added
+- Pull #307, Fixes #276
+- Adds phpdoc and style fixes
+- Thanks to [Avishkar Autar](https://github.com/aautar) for the PR!
+
 ## [5.1.0] - 2016-09-29 ##
 ### Fixed
 - Pull #295: [Upgrade sendgrid/php-http-client](https://github.com/sendgrid/sendgrid-php/pull/295/files)
diff --git a/composer.json b/composer.json
index 1f7c0373e..33640afee 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "sendgrid/sendgrid",
   "description": "This library allows you to quickly and easily send emails through SendGrid using PHP.",
-  "version": "5.1.0",
+  "version": "5.1.1",
   "homepage": "http://github.com/sendgrid/sendgrid-php",
   "license": "MIT",
   "keywords": ["SendGrid", "sendgrid", "email", "send", "grid"],
diff --git a/lib/SendGrid.php b/lib/SendGrid.php
index d516cbf25..0cc04d371 100644
--- a/lib/SendGrid.php
+++ b/lib/SendGrid.php
@@ -16,7 +16,7 @@
   */
 class SendGrid
 {
-    const VERSION = '5.1.0';
+    const VERSION = '5.1.1';
 
     /**
      *
diff --git a/test/unit/SendGridTest.php b/test/unit/SendGridTest.php
index 53b6436fe..3444f0875 100644
--- a/test/unit/SendGridTest.php
+++ b/test/unit/SendGridTest.php
@@ -59,7 +59,7 @@ public static function setUpBeforeClass()
 
     public function testVersion()
     {
-        $this->assertEquals(SendGrid::VERSION, '5.1.0');
+        $this->assertEquals(SendGrid::VERSION, '5.1.1');
         $this->assertEquals(json_decode(file_get_contents(__DIR__ . '/../../composer.json'))->version, SendGrid::VERSION);
     }