diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9e4dfe8fdb..74c0b036d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## next release
+## 3.321.3 - 2024-09-03
 
 * `Aws\Connect` - Release ReplicaConfiguration as part of DescribeInstance
 * `Aws\TimestreamInfluxDB` - Timestream for InfluxDB now supports compute scaling and deployment type conversion. This release adds the DbInstanceType and DeploymentType parameters to the UpdateDbInstance API.
diff --git a/src/Sdk.php b/src/Sdk.php
index ce546beefd..6201868bfe 100644
--- a/src/Sdk.php
+++ b/src/Sdk.php
@@ -777,7 +777,7 @@
  */
 class Sdk
 {
-    const VERSION = '3.321.2';
+    const VERSION = '3.321.3';
 
     /** @var array Arguments for creating clients */
     private $args;