diff --git a/package.json b/package.json
index c519b5e6e..f3baa2fb8 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "title": "ConvertKit",
   "author": "ConvertKit",
   "license": "GPL-2.0",
-  "version": "1.6.3",
+  "version": "1.6.4",
   "description": "",
   "homepage": "https://github.com/convertkit/ConvertKit-WordPress",
   "main": "Gruntfile.js",
diff --git a/readme.txt b/readme.txt
index 396add9fa..6bb5228b5 100755
--- a/readme.txt
+++ b/readme.txt
@@ -3,8 +3,8 @@ Contributors: nathanbarry, growdev
 Donate link: https://convertkit.com
 Tags: email, marketing, embed form, convertkit, capture
 Requires at least: 3.6
-Tested up to: 4.9.7
-Stable tag: 1.6.3
+Tested up to: 5.0.3
+Stable tag: 1.6.4
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
@@ -46,6 +46,13 @@ Yes, for it to work you must first have an account on ConvertKit.com
 
 == Changelog ==
 
+### 1.6.4 2019-01-18
+* Added tools tab with debug log and system info boxes
+* Fixed a bug that would show a PHP notice in some cases
+* Fixed two bugs that would sometimes result in the custom content feature failing
+* Fixed a bug that would sometimes cause WishList Member integration settings to not save
+
+
 ### 1.6.3 2019-01-07
 * Fixes issues with Contact Form 7 integration not saving form settings.
 * Adds button to refresh on settings page, to fetch new forms added to the connected ConvertKit account.
diff --git a/wp-convertkit.php b/wp-convertkit.php
index ae22e0a66..5eb382f2a 100644
--- a/wp-convertkit.php
+++ b/wp-convertkit.php
@@ -3,7 +3,7 @@
  * Plugin Name: ConvertKit
  * Plugin URI: https://convertkit.com/
  * Description: Quickly and easily integrate ConvertKit forms into your site.
- * Version: 1.6.3
+ * Version: 1.6.4
  * Author: ConvertKit
  * Author URI: https://convertkit.com/
  * Text Domain: convertkit
@@ -16,7 +16,7 @@
 define( 'CONVERTKIT_PLUGIN_FILE', plugin_basename( __FILE__ ) );
 define( 'CONVERTKIT_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
 define( 'CONVERTKIT_PLUGIN_PATH', plugin_dir_path( __FILE__ ) );
-define( 'CONVERTKIT_PLUGIN_VERSION', '1.6.3' );
+define( 'CONVERTKIT_PLUGIN_VERSION', '1.6.4' );
 
 require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit.php';
 require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-api.php';