diff --git a/core/CHANGELOG.txt b/core/CHANGELOG.txt
index 10e824f9e3e490f74cf9bff094d5229f7b0a82fa..0436c10b092e8b409a030d9cf878c68d7311c96e 100644
--- a/core/CHANGELOG.txt
+++ b/core/CHANGELOG.txt
@@ -1,3 +1,7 @@
+Drupal 8.3.1, 2017-04-19
+------------------------
+- Fixed security issues. See SA-CORE-2017-002.
+
 Drupal 8.3.0, 2017-04-05
 ------------------------
 - Added modules:
diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index f15548071d9759016a958371f0527a43533f0c27..defdbffb591bb1f15b542bc3d00f6f9311604277 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -81,7 +81,7 @@ class Drupal {
   /**
    * The current system version.
    */
-  const VERSION = '8.3.0';
+  const VERSION = '8.3.1';
 
   /**
    * Core API compatibility.