diff --git a/Makefile b/Makefile
index f615d274a8b2743c0973e70de08a085eb5cc7952..3eefe6c3a2f09206138a46fead36e077464583f3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 BASE=ordernumbers
 PLATTFORM=woocommerce
 VENDOR=opentools
-VERSION=1.3.7debug1
+VERSION=1.3.8
 DIR = $(shell pwd)
 SVNDIR=wordpress-plugin-svn
 
diff --git a/opentools-update-checker.php b/opentools-update-checker.php
index 49f45ad0fa8e664a010c051c2f434af858edd72b..6e30c59cccc158ec86d01d0a51bff094485a47ce 100644
--- a/opentools-update-checker.php
+++ b/opentools-update-checker.php
@@ -23,7 +23,7 @@ class OpenToolsPluginUpdateChecker extends PluginUpdateChecker_2_1 {
 	public function __construct($metadataUrl, $pluginFile, $slug = '', $checkPeriod = 12, $optionName = '', $muPluginFile = '')
 	{
 		parent::__construct($metadataUrl, $pluginFile, $slug, $checkPeriod, $optionName, $muPluginFile);
-		$this->debugMode = TRUE;
+// 		$this->debugMode = TRUE;
 		$this->installOTHooks();
 	}
 	public function declareCredentials($credential_def) {
@@ -129,15 +129,6 @@ class OpenToolsPluginUpdateChecker extends PluginUpdateChecker_2_1 {
 			return;
 		}
 		
- $json['showCredentials'] = $showCredentials;
- $json['issetSLUG'] = isset($_REQUEST['slug']);
- $json['SLUGmatches'] = $_REQUEST['slug'] == $this->slug;
- $json['userCanUpdatePlugins'] = current_user_can('update_plugins');
- $json['checkAjax'] = check_ajax_referer('otup_enter_update_credentials');
- $json['NotEmptyCredVars'] = !empty($this->credvars);
-
- $json['IsNetworkAdmin'] = is_network_admin();
- $json['isMultisite'] = is_multisite();
 		$showCredentials = isset($_REQUEST['slug'])
 			&& $_REQUEST['slug'] == $this->slug
 			&& current_user_can('update_plugins')
diff --git a/opentools-woocommerce-ordernumbers-advanced_v1.3.7debug.zip b/opentools-woocommerce-ordernumbers-advanced_v1.3.7debug.zip
deleted file mode 100644
index 1bf750f9c19f4319d20042dc51cda0a346e164dc..0000000000000000000000000000000000000000
Binary files a/opentools-woocommerce-ordernumbers-advanced_v1.3.7debug.zip and /dev/null differ
diff --git a/opentools-woocommerce-ordernumbers-basic_v1.3.7debug1.zip b/opentools-woocommerce-ordernumbers-basic_v1.3.7debug1.zip
deleted file mode 100644
index 4ffd725327c42fb863c36dfa34830bfef80fdd19..0000000000000000000000000000000000000000
Binary files a/opentools-woocommerce-ordernumbers-basic_v1.3.7debug1.zip and /dev/null differ
diff --git a/readme.txt b/readme.txt
index c13b4df12a4dc5c23562a23701d0f62846cf66d4..3d7ffb72afad921befe59ab60c1d213d939a5ee2 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Contributors: opentools
 Tags: WooCommerce, Order numbers, orders
 Requires at least: 4.0
 Tested up to: 4.7
-Stable tag: 1.3.7
+Stable tag: 1.3.8
 License: GPLv3 or later
 License URI: http://www.gnu.org/licenses/gpl.html
 
@@ -78,6 +78,9 @@ The Advanced Ordernumbers for WooCommerce plugin supports some invoicing plugins
 
 == Changelog ==
 
+= 1.3.8 =
+* Add debug messages to the update system (disabled by default)
+
 = 1.3.7 =
 * Add support for PayPal payment method
 * Add variables:
diff --git a/opentools-woocommerce-ordernumbers-advanced_v1.3.7debug1.zip b/releases/opentools-woocommerce-ordernumbers-advanced_v1.3.8.zip
similarity index 86%
rename from opentools-woocommerce-ordernumbers-advanced_v1.3.7debug1.zip
rename to releases/opentools-woocommerce-ordernumbers-advanced_v1.3.8.zip
index 54419ceff3e36ae5107a2a3e9be2d012f951d6e3..895b0436b3b9175f959057c422284a1bb5a5838b 100644
Binary files a/opentools-woocommerce-ordernumbers-advanced_v1.3.7debug1.zip and b/releases/opentools-woocommerce-ordernumbers-advanced_v1.3.8.zip differ
diff --git a/opentools-woocommerce-ordernumbers-basic_v1.3.7debug.zip b/releases/opentools-woocommerce-ordernumbers-basic_v1.3.8.zip
similarity index 85%
rename from opentools-woocommerce-ordernumbers-basic_v1.3.7debug.zip
rename to releases/opentools-woocommerce-ordernumbers-basic_v1.3.8.zip
index 0aa808bb276c7b5fdde0e2a9a25a140e30a97037..403547d749735f387b636ab90a604eeeee607aec 100644
Binary files a/opentools-woocommerce-ordernumbers-basic_v1.3.7debug.zip and b/releases/opentools-woocommerce-ordernumbers-basic_v1.3.8.zip differ
diff --git a/woocommerce-advanced-ordernumbers.php b/woocommerce-advanced-ordernumbers.php
index 3b66977bcd3667180794cb40e2443a233a895573..a4433bd4b0de578b59796597ccb90a13484c3127 100644
--- a/woocommerce-advanced-ordernumbers.php
+++ b/woocommerce-advanced-ordernumbers.php
@@ -3,7 +3,7 @@
  * Plugin Name: Woocommerce Advanced Ordernumbers
  * Plugin URI: http://open-tools.net/woocommerce/advanced-ordernumbers-for-woocommerce.html
  * Description: Lets the user freely configure the order numbers in WooCommerce.
- * Version: 1.3.7debug1
+ * Version: 1.3.8
  * Author: Open Tools
  * Author URI: http://open-tools.net
  * Text Domain: woocommerce-advanced-ordernumbers
diff --git a/woocommerce-basic-ordernumbers.php b/woocommerce-basic-ordernumbers.php
index 60eba04fe110791223cf9cfaefb85c477ad4530c..64c503bff3ae4796bc7bf93c281c855bafd003e4 100644
--- a/woocommerce-basic-ordernumbers.php
+++ b/woocommerce-basic-ordernumbers.php
@@ -3,7 +3,7 @@
  * Plugin Name: WooCommerce Basic Ordernumbers
  * Plugin URI: http://open-tools.net/woocommerce/advanced-ordernumbers-for-woocommerce.html
  * Description: Configure WooCommerce ordernumbers to have a running counter and arbitrary, fixed text (prefix / postfix).
- * Version: 1.3.7debug
+ * Version: 1.3.8
  * Author: Open Tools
  * Author URI: http://open-tools.net
  * Text Domain: woocommerce-advanced-ordernumbers