diff --git a/13/umbraco-forms/installation/the-licensing-model.md b/13/umbraco-forms/installation/the-licensing-model.md
index 37ec26cc1ba..431e8257317 100644
--- a/13/umbraco-forms/installation/the-licensing-model.md
+++ b/13/umbraco-forms/installation/the-licensing-model.md
@@ -123,6 +123,8 @@ Apply the following configuration with the appropriate algorithm - `DES` (the de
 
 ### Installing subscription license product key
 
+{% hint style="warning" %} Subscription licenses are only supported from version 13.6 and above. {% endhint %}
+
 Once you have received your license code it needs to be installed on your site.
 
 1. Open the root directory for your project files.
diff --git a/16/umbraco-forms/installation/the-licensing-model.md b/16/umbraco-forms/installation/the-licensing-model.md
index 391802211a6..f949079441a 100644
--- a/16/umbraco-forms/installation/the-licensing-model.md
+++ b/16/umbraco-forms/installation/the-licensing-model.md
@@ -119,6 +119,8 @@ Apply the following configuration with the appropriate algorithm - `DES` (the de
 
 ### Installing subscription license product key
 
+{% hint style="warning" %} Subscription licenses are only supported from version 16.1 and above. {% endhint %}
+
 Once you have received your license code it needs to be installed on your site.
 
 1. Open the root directory for your project files.