diff --git a/build.php b/build.php
index 65dee9f6..a2ec6a84 100644
--- a/build.php
+++ b/build.php
@@ -1,4 +1,4 @@
 <?php
 
 // Define the current build
-define('MODS_FOR_HESK_BUILD', 30);
\ No newline at end of file
+define('MODS_FOR_HESK_BUILD', 31);
\ No newline at end of file
diff --git a/install/install_functions.inc.php b/install/install_functions.inc.php
index 56e53f70..54fd9021 100644
--- a/install/install_functions.inc.php
+++ b/install/install_functions.inc.php
@@ -37,8 +37,8 @@ if (!defined('IN_SCRIPT')) {die('Invalid attempt');}
 
 // We will be installing this HESK version:
 define('HESK_NEW_VERSION','2.6.7');
-define('MODS_FOR_HESK_NEW_VERSION','2.6.3');
-define('REQUIRE_PHP_VERSION','5.0.0');
+define('MODS_FOR_HESK_NEW_VERSION','2.6.4');
+define('REQUIRE_PHP_VERSION','5.3.0');
 define('REQUIRE_MYSQL_VERSION','5.0.7');
 
 // Other required files and settings
diff --git a/install/mods-for-hesk/ajax/install-database-ajax.php b/install/mods-for-hesk/ajax/install-database-ajax.php
index 10fd519e..78f27963 100644
--- a/install/mods-for-hesk/ajax/install-database-ajax.php
+++ b/install/mods-for-hesk/ajax/install-database-ajax.php
@@ -66,6 +66,8 @@ if ($version == 2) {
     execute262Scripts();
 } elseif ($version == 30) {
     execute263Scripts();
+} elseif ($version == 31) {
+    execute264Scripts();
 } else {
     $response = 'The version "' . $version . '" was not recognized. Check the value submitted and try again.';
     print $response;
diff --git a/install/mods-for-hesk/installModsForHesk.php b/install/mods-for-hesk/installModsForHesk.php
index f74b3e00..fa80ad89 100644
--- a/install/mods-for-hesk/installModsForHesk.php
+++ b/install/mods-for-hesk/installModsForHesk.php
@@ -39,6 +39,7 @@ $buildToVersionMap = array(
     28 => '2.6.1',
     29 => '2.6.2',
     30 => '2.6.3',
+    31 => '2.6.4',
 );
 
 function echoInitialVersionRows($version, $build_to_version_map)
diff --git a/install/mods-for-hesk/js/version-scripts.js b/install/mods-for-hesk/js/version-scripts.js
index bd02e29a..10d012f3 100644
--- a/install/mods-for-hesk/js/version-scripts.js
+++ b/install/mods-for-hesk/js/version-scripts.js
@@ -86,6 +86,9 @@ function processUpdates(startingVersion) {
     } else if (startingVersion < 30) {
         startVersionUpgrade('263');
         executeUpdate(30, '263', '2.6.3');
+    } else if (startingVersion < 31) {
+        startVersionUpgrade('264');
+        executeUpdate(31, '264', '2.6.4');
     } else {
         installationFinished();
     }
diff --git a/install/mods-for-hesk/modsForHesk.php b/install/mods-for-hesk/modsForHesk.php
index fc892928..d7c49c9f 100644
--- a/install/mods-for-hesk/modsForHesk.php
+++ b/install/mods-for-hesk/modsForHesk.php
@@ -117,6 +117,7 @@ hesk_dbConnect();
                                     <div class="col-md-8">
                                         <select name="current-version" class="form-control">
                                             <optgroup label="Mods for HESK 2">
+                                                <option value="30">2.6.3</option>
                                                 <option value="29">2.6.2</option>
                                                 <option value="28">2.6.1</option>
                                                 <option value="27">2.6.0</option>
diff --git a/install/mods-for-hesk/sql/installSql.php b/install/mods-for-hesk/sql/installSql.php
index d34d50f8..94847799 100644
--- a/install/mods-for-hesk/sql/installSql.php
+++ b/install/mods-for-hesk/sql/installSql.php
@@ -814,6 +814,14 @@ function execute263Scripts() {
     updateVersion('2.6.3');
 }
 
+// Version 2.6.4
+function execute264Scripts() {
+    global $hesk_settings;
+    hesk_dbConnect();
+
+    updateVersion('2.6.4');
+}
+
 function execute270Scripts() {
     global $hesk_settings;
     hesk_dbConnect();