diff --git a/CHANGELOG.md b/CHANGELOG.md
index c3b5550bd5..4f17712fe1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## next release
+## 3.85.1 - 2019-01-11
 
 * `Aws\EMR` - Documentation updates for Amazon EMR
 * `Aws\RDSDataService` - Documentation updates for RDS Data API.
diff --git a/src/Sdk.php b/src/Sdk.php
index fe097607be..b5b0eebb7b 100644
--- a/src/Sdk.php
+++ b/src/Sdk.php
@@ -343,7 +343,7 @@
  */
 class Sdk
 {
-    const VERSION = '3.85.0';
+    const VERSION = '3.85.1';
 
     /** @var array Arguments for creating clients */
     private $args;