diff --git a/CHANGELOG-v3.md b/CHANGELOG-v3.md
index 67add4e53af..417bef4ee35 100644
--- a/CHANGELOG-v3.md
+++ b/CHANGELOG-v3.md
@@ -1,6 +1,6 @@
 # Release Notes for Craft CMS 3.x
 
-## Unreleased
+## 3.1.3 - 2019-01-21
 
 ### Added
 - Added the `|json_decode` Twig filter.  ([#3678](https://github.com/craftcms/cms/pull/3678))
diff --git a/composer.json b/composer.json
index 6dc52ea9391..9beccaafedf 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "name": "craftcms/cms",
   "description": "Craft CMS",
-  "version": "3.1.2.2",
+  "version": "3.1.3",
   "keywords": [
     "cms",
     "craftcms",
diff --git a/src/config/app.php b/src/config/app.php
index db26cb503d2..902931c5a1b 100644
--- a/src/config/app.php
+++ b/src/config/app.php
@@ -3,7 +3,7 @@
 return [
     'id' => 'CraftCMS',
     'name' => 'Craft CMS',
-    'version' => '3.1.2.2',
+    'version' => '3.1.3',
     'schemaVersion' => '3.1.22',
     'minVersionRequired' => '2.6.2788',
     'basePath' => dirname(__DIR__), // Defines the @app alias