diff --git a/api-guide/source/extensions.rst b/api-guide/source/extensions.rst
deleted file mode 100644
index 90b6f41e352c..000000000000
--- a/api-guide/source/extensions.rst
+++ /dev/null
@@ -1,11 +0,0 @@
-==========
-Extensions
-==========
-
-Extensions are a deprecated concept in Nova. Support for extensions will be
-removed in a future release. In order to keep backwards-compatibility with
-legacy V2 API users, the ``extension_info`` API will remain as part of the
-Compute API. However, API extensions will not be supported anymore;
-there is only one standard API now. For the current V2.1 API, ``Microversions``
-are the new mechanism for implementing API features and changes. For more
-detail about microversions, please refer to :doc:`microversions`.
diff --git a/api-guide/source/index.rst b/api-guide/source/index.rst
index 653960804bac..e64e6b20d445 100644
--- a/api-guide/source/index.rst
+++ b/api-guide/source/index.rst
@@ -75,7 +75,6 @@ Contents
 
     users
     versions
-    extensions
     microversions
     general_info
     server_concepts