diff --git a/README.md b/README.md
index a17e0c3..8c5ec84 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,17 @@ More information can be found in the Wiki.
 ## Installation ##
 Please refer to the Wiki how to get mailGraph installed and configured on your system.
 
+## mailGraph v2.13 release ##
+_(2023/07/03)_
+
+_This version has been verified with Zabbix 5.4 and 6.0 LTS and is expected to work with 6.4 and later (based on v2.10 testing)_
+
+Release notes
+- Fixed references into Zabbix
+  - Trigger was missing "context" parameter
+  - Item was missing "context" parameter
+  - Problems reference to this host was not generated at all
+
 ## mailGraph v2.12 release ##
 _(2023/07/02)_
 
diff --git a/javascript/zabbix.mailGraph.js b/javascript/zabbix.mailGraph.js
index ef48387..fd42bfd 100644
--- a/javascript/zabbix.mailGraph.js
+++ b/javascript/zabbix.mailGraph.js
@@ -1,4 +1,4 @@
-// mailGraph v2.12
+// mailGraph v2.13
 try {
     // Pickup parameters
     params = JSON.parse(value),
diff --git a/mailGraph.xml b/mailGraph.xml
index ec71b2e..adf8625 100755
--- a/mailGraph.xml
+++ b/mailGraph.xml
@@ -64,7 +64,7 @@
                     <value>https://myzabbix.example.com/mailGraph.php</value>
                 </parameter>
             </parameters>
-            <script>// mailGraph v2.12
+            <script>// mailGraph v2.13
 try {
     // Pickup parameters
     params = JSON.parse(value),