diff --git a/api-ref/source/v2/tags.inc b/api-ref/source/v2/tags.inc
index 3455abfac..9731aff5d 100644
--- a/api-ref/source/v2/tags.inc
+++ b/api-ref/source/v2/tags.inc
@@ -3,13 +3,24 @@
 Tag extension (tags)
 ====================
 
-Shows details for, updates, and deletes tags. This extension is
-available since Mitaka release.
+Shows details for, updates, and deletes tags.
 
 The maximum number of characters allowed in a tag is 60. If the length
 is longer than 60, the API returns the HTTP ``Bad Request (400)`` response
 code with 'invalid input for operation' error message.
 
+Tag Extension
+=============
+
+The ``tag`` extension allows users to set tags on their networks.
+This extension supports networks only.
+
+Enhanced Tag Extension
+======================
+
+The ``tag-ext`` extension allows users to set tags on their resources.
+This extension supports subnets, ports, routers, and subnet pools.
+
 Replace all tags
 ================