diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index 804c685..c5d26e5 100644
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -55,7 +55,7 @@
  * @var	string
  *
  */
-	const CI_VERSION = '3.1.1-dev';
+	const CI_VERSION = '3.1.1';
 
 /*
  * ------------------------------------------------------
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 1e59d4c..c7bd502 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -5,7 +5,7 @@
 Version 3.1.1
 =============
 
-Release Date: Not Released
+Release Date: Oct 22, 2016
 
 -  **Security**
 
diff --git a/user_guide_src/source/conf.py b/user_guide_src/source/conf.py
index 0c4901d..a685c44 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 = '3.1.1-dev'
+version = '3.1.1'
 # The full version, including alpha/beta/rc tags.
-release = '3.1.1-dev'
+release = '3.1.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.