diff --git a/doc/index.rst b/doc/index.rst
index bea090b8b3a..b5ee9609956 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -20,7 +20,7 @@ Zephyr Project Documentation
    ``https://www.zephyrproject.org/doc/<version>``. The following documentation
    versions are vailable:
 
-   `Zephyr 1.1.0`_ | `Zephyr 1.2.0`_ | `Zephyr 1.3.0`_
+   `Zephyr 1.1.0`_ | `Zephyr 1.2.0`_ | `Zephyr 1.3.0`_ | `Zephyr 1.4.0`_
 
 Sections
 ********
@@ -115,6 +115,7 @@ Indices and Tables
 * :ref:`search`
 
 .. _Zephyr Project Wiki: https://wiki.zephyrproject.org/view/Main_Page
+.. _Zephyr 1.4.0: https://www.zephyrproject.org/doc/1.4.0/
 .. _Zephyr 1.3.0: https://www.zephyrproject.org/doc/1.3.0/
 .. _Zephyr 1.2.0: https://www.zephyrproject.org/doc/1.2.0/
 .. _Zephyr 1.1.0: https://www.zephyrproject.org/doc/1.1.0/