[ci skip] Prepare 3.1.3 release
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index ca1696c..cccef1c 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -5,7 +5,7 @@
 Version 3.1.3
 =============
 
-Release Date: Not Released
+Release Date: Jan 09, 2017
 
 -  **Security**