diff --git a/README.md b/README.md
index 1c82fd4..eaba01f 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,17 @@
 Zencoder API PHP Library
 ==========================
 
+Company: [Brightcove/Zencoder](http://www.zencoder.com)
+
+Version: 2.2.4
+
+Date:    2019-09-05
+
+Repository: <http://github.com/zencoder/zencoder-php/>
+
+HTTP headers are handled in a case-insensitve manner so that they are compatible with HTTP2.
+
+
 Author:  [Nathan Sutton] (nsutton (a) brightcove (.) c&#1;om)
 
 Company: [Brightcove/Zencoder](http://www.zencoder.com)
@@ -125,7 +136,7 @@ try {
   echo "Output ID: ".$encoding_job->outputs['web']->id."\n";
   // Store Job/Output IDs to update their status when notified or to check their progress.
 } catch (Services_Zencoder_Exception $e) {
-  // If were here, an error occured
+  // If were here, an error occurred
   echo "Fail :(\n\n";
   echo "Errors:\n";
   foreach ($e->getErrors() as $error) echo $error."\n";
@@ -241,6 +252,7 @@ Your [notifications page](https://app.zencoder.com/notifications) will come in h
 VERSIONS
 ---------
 
+    Version 2.2.4 - 2019-09-05    HTTP headers are handled in a case-insensitve manner so that they are compatible with HTTP2.
     Version 2.2.3 - 2014-07-29    Fixed the versions listed in the user agent and throughout the code
     Version 2.2.2 - 2014-07-29    Fixed a bug where api_key was set as api_version in the http connection options
     Version 2.2.1 - 2014-07-29    Support setting CURLOPT_CAPATH and CURLOPT_CAINFO on cURL connections.
diff --git a/Services/Zencoder.php b/Services/Zencoder.php
index ba8e209..6e8447c 100644
--- a/Services/Zencoder.php
+++ b/Services/Zencoder.php
@@ -5,7 +5,7 @@
  * @category Services
  * @package  Services_Zencoder
  * @author   Michael Christopher <m@zencoder.com>
- * @version  Release: 2.2.3
+ * @version  Release: 2.2.4
  * @license  http://creativecommons.org/licenses/MIT/MIT
  * @link     http://github.com/zencoder/zencoder-php
  * @access   private
@@ -26,14 +26,14 @@ function Services_Zencoder_autoload($className)
  * @category Services
  * @package  Services_Zencoder
  * @author   Michael Christopher <m@zencoder.com>
- * @version  Release: 2.2.3
+ * @version  Release: 2.2.4
  * @license  http://creativecommons.org/licenses/MIT/MIT
  * @link     http://github.com/zencoder/zencoder-php
  */
 
 class Services_Zencoder extends Services_Zencoder_Base
 {
-    const USER_AGENT = 'ZencoderPHP v2.2.3';
+    const USER_AGENT = 'ZencoderPHP v2.2.4';
 
     /**
     * Contains the HTTP communication class
@@ -231,10 +231,10 @@ private function _processResponse($response)
         if ( $status == 204 || (($status == 200 || $status == 201) && trim($body) == "")) {
             return TRUE;
         }
-        if (empty($headers['Content-Type'])) {
+        if (empty($headers['content-type'])) {
             throw new Services_Zencoder_Exception('Response header is missing Content-Type', $body);
         }
-        switch ($headers['Content-Type']) {
+        switch ($headers['content-type']) {
             case 'application/json':
             case 'application/json; charset=utf-8':
                 return $this->_processJsonResponse($status, $headers, $body);
diff --git a/Services/Zencoder/Http.php b/Services/Zencoder/Http.php
index eed8c7d..0a27a95 100644
--- a/Services/Zencoder/Http.php
+++ b/Services/Zencoder/Http.php
@@ -115,7 +115,8 @@ public function __call($name, $args) {
             array_shift($header_lines);
             foreach ($header_lines as $line) {
               list($key, $value) = explode(":", $line, 2);
-              $headers[$key] = trim($value);
+              // Ensure headers are lowercase per https://tools.ietf.org/html/rfc2616#section-4.2
+              $headers[strtolower($key)] = trim($value);
             }
             curl_close($curl);
             if (isset($buf) && is_resource($buf)) fclose($buf);
diff --git a/composer.json b/composer.json
index 32bfcb8..c8fcfdd 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
   "name": "zencoder/zencoder-php",
-  "homepage": "http://github.com/zencoder/zencoder-php",
+  "homepage": "https://github.com/zencoder/zencoder-php",
   "description":"Zencoder integration library for PHP",
   "keywords":["zencoder", "encoding", "encoder", "cloud"],
   "type":"library",
@@ -16,7 +16,7 @@
   "authors":[
     {
       "name":"Zencoder",
-      "homepage":"http://zencoder.com/"
+      "homepage":"https://zencoder.com/"
     }
   ]
 }