diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86bb0a6602..30e0dd9506 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## next release
+## 3.321.13 - 2024-09-17
 
 * `Aws\SSM` - Support for additional levels of cross-account, cross-Region organizational units in Automation. Various documentation updates.
 * `Aws\ECS` - This is a documentation only release to address various tickets.
diff --git a/src/Sdk.php b/src/Sdk.php
index c4f96d5be8..2491973bce 100644
--- a/src/Sdk.php
+++ b/src/Sdk.php
@@ -777,7 +777,7 @@
  */
 class Sdk
 {
-    const VERSION = '3.321.12';
+    const VERSION = '3.321.13';
 
     /** @var array Arguments for creating clients */
     private $args;