diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3b280a8dc8f..6c409d19804 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-Unreleased Changes
+2.1.21 (2015-09-15)
 ------------------
 
 * Feature - Aws::EC2 - Added two new fields to expose data encryption key id,
diff --git a/VERSION b/VERSION
index dfb63969647..0ddcadb1d44 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.20
+2.1.21
diff --git a/aws-sdk-core/lib/aws-sdk-core/version.rb b/aws-sdk-core/lib/aws-sdk-core/version.rb
index 05a9ac27ac3..669d4dca1b4 100644
--- a/aws-sdk-core/lib/aws-sdk-core/version.rb
+++ b/aws-sdk-core/lib/aws-sdk-core/version.rb
@@ -1,3 +1,3 @@
 module Aws
-  VERSION = '2.1.20'
+  VERSION = '2.1.21'
 end