diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index 823e034..f5ffc5d 100644
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -55,7 +55,7 @@
  * @var	string
  *
  */
-	const CI_VERSION = '3.1.5';
+	const CI_VERSION = '3.1.6-dev';
 
 /*
  * ------------------------------------------------------
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 21a1c0c..3012b9e 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -2,6 +2,12 @@
 Change Log
 ##########
 
+Version 3.1.6
+=============
+
+Release Date: Not Released
+
+
 Version 3.1.5
 =============
 
diff --git a/user_guide_src/source/conf.py b/user_guide_src/source/conf.py
index c233b3a..f783d67 100644
--- a/user_guide_src/source/conf.py
+++ b/user_guide_src/source/conf.py
@@ -48,9 +48,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '3.1.5'
+version = '3.1.6-dev'
 # The full version, including alpha/beta/rc tags.
-release = '3.1.5'
+release = '3.1.6-dev'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/user_guide_src/source/installation/downloads.rst b/user_guide_src/source/installation/downloads.rst
index 4cd824f..23c500e 100644
--- a/user_guide_src/source/installation/downloads.rst
+++ b/user_guide_src/source/installation/downloads.rst
@@ -2,7 +2,8 @@
 Downloading CodeIgniter
 #######################
 
--  `CodeIgniter v3.1.5 (Current version) <https://codeload.github.com/bcit-ci/CodeIgniter/zip/3.1.5>`_
+-  `CodeIgniter v3.1.6-dev (Current version) <https://codeload.github.com/bcit-ci/CodeIgniter/zip/3.1-stable>`_
+-  `CodeIgniter v3.1.5 <https://codeload.github.com/bcit-ci/CodeIgniter/zip/3.1.5>`_
 -  `CodeIgniter v3.1.4 <https://codeload.github.com/bcit-ci/CodeIgniter/zip/3.1.4>`_
 -  `CodeIgniter v3.1.3 <https://codeload.github.com/bcit-ci/CodeIgniter/zip/3.1.3>`_
 -  `CodeIgniter v3.1.2 <https://codeload.github.com/bcit-ci/CodeIgniter/zip/3.1.2>`_
diff --git a/user_guide_src/source/installation/upgrade_316.rst b/user_guide_src/source/installation/upgrade_316.rst
new file mode 100644
index 0000000..e382c20
--- /dev/null
+++ b/user_guide_src/source/installation/upgrade_316.rst
@@ -0,0 +1,14 @@
+#############################
+Upgrading from 3.1.5 to 3.1.6
+#############################
+
+Before performing an update you should take your site offline by
+replacing the index.php file with a static one.
+
+Step 1: Update your CodeIgniter files
+=====================================
+
+Replace all files and directories in your *system/* directory.
+
+.. note:: If you have any custom developed files in these directories,
+	please make copies of them first.
diff --git a/user_guide_src/source/installation/upgrading.rst b/user_guide_src/source/installation/upgrading.rst
index 8f30e1a..991d5cf 100644
--- a/user_guide_src/source/installation/upgrading.rst
+++ b/user_guide_src/source/installation/upgrading.rst
@@ -8,6 +8,7 @@
 .. toctree::
 	:titlesonly:
 
+	Upgrading from 3.1.5 to 3.1.6 <upgrade_316>
 	Upgrading from 3.1.4 to 3.1.5 <upgrade_315>
 	Upgrading from 3.1.3 to 3.1.4 <upgrade_314>
 	Upgrading from 3.1.2 to 3.1.3 <upgrade_313>