diff --git a/Makefile b/Makefile
index 02d6b0c822d98033cb6833bfbad3e58066139a47..7edb17f5deebeacdacaea33b35d78f30566dd5a0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 BASE=shipping-by-rules
 PLATTFORM=woocommerce
 VENDOR=opentools
-VERSION=2.0.3
+VERSION=2.0.4
 DIR = $(shell pwd)
 SVNDIR=wordpress-plugin-svn
 
diff --git a/readme.txt b/readme.txt
index f5524b63311783de835b88f4d41d96d805cbab73..a979f27b49ef9e7bdedd857b5f0612a14c969be9 100644
--- a/readme.txt
+++ b/readme.txt
@@ -2,8 +2,8 @@
 Contributors: opentools
 Tags: WooCommerce, Shipment, Shipping, Rules shipping
 Requires at least: 4.0
-Tested up to: 4.8.3
-Stable tag: 2.0.3
+Tested up to: 4.9.2
+Stable tag: 2.0.4
 License: GPLv3 or later
 License URI: http://www.gnu.org/licenses/gpl.html
 
@@ -69,6 +69,10 @@ Please see our support forum at http://open-tools.net/forum/. It might also be a
 
 == Changelog ==
 
+= 2.0.4 =
+* Compatibility with WC vendors in combination with product variations
+* Fix PHP warnings
+
 = 2.0.3 = 
 * Fix warning when products have no length/width/height assigned (use 0 as default)
 * Fix tiny incompatibility with PHP 7
diff --git a/woocommerce-advanced-shipping-by-rules.php b/woocommerce-advanced-shipping-by-rules.php
index fa30f1b6e30cc8b07d56c7ae7c22bd02f130b25b..7598e277722b8542da157a557450f3de7572b000 100644
--- a/woocommerce-advanced-shipping-by-rules.php
+++ b/woocommerce-advanced-shipping-by-rules.php
@@ -3,14 +3,14 @@
  * Plugin Name: WooCommerce Advanced Shipping By Rules
  * Plugin URI: http://open-tools.net/woocommerce/advanced-shipping-by-rules-for-woocommerce.html
  * Description: Define Shipping cost by very general and flexible (text-based) rules. The advanced version also provides mathematical expressions and functions
- * Version: 2.0.3
+ * Version: 2.0.4
  * Author: Open Tools, Reinhold Kainhofer
  * Author URI: http://open-tools.net
  * Text Domain: woocommerce-advanced-shipping-by-rules
  * Domain Path: woocommerce-shipping-by-rules
  * License: GPL2+
  * WC requires at least: 2.2
- * WC tested up to: 3.2.3
+ * WC tested up to: 3.2.6
  
 
  * Copyright (C) 2015 Reinhold Kainhofer
diff --git a/woocommerce-shipping-by-rules.php b/woocommerce-shipping-by-rules.php
index de892ffe62ae2d354dee7438da8a202d9275a640..255d58c6d37151e02ca68b9e715b888d641f9be3 100644
--- a/woocommerce-shipping-by-rules.php
+++ b/woocommerce-shipping-by-rules.php
@@ -3,14 +3,14 @@
  * Plugin Name: WooCommerce Shipping By Rules
  * Plugin URI: http://open-tools.net/woocommerce/advanced-shipping-by-rules-for-woocommerce.html
  * Description: Define Shipping cost by very general and flexible (text-based) rules.
- * Version: 2.0.3
+ * Version: 2.0.4
  * Author: Open Tools, Reinhold Kainhofer
  * Author URI: http://open-tools.net
  * Text Domain: woocommerce-shipping-by-rules
  * Domain Path: 
  * License: GPL2+
  * WC requires at least: 2.2
- * WC tested up to: 3.2.3
+ * WC tested up to: 3.2.6
  
 
  * Copyright (C) 2015 Reinhold Kainhofer