diff --git a/CHANGELOG.md b/CHANGELOG.md
index d329eb7de8..8c6c77d74c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## next release
+## 3.305.6 - 2024-04-30
 
 * `Aws\QuickSight` - New Q embedding supporting Generative Q&A
 * `Aws\OpenSearchService` - This release enables customers to create Route53 A and AAAA alias record types to point custom endpoint domain to OpenSearch domain's dualstack search endpoint.
diff --git a/src/Sdk.php b/src/Sdk.php
index 635b758467..86454cd90f 100644
--- a/src/Sdk.php
+++ b/src/Sdk.php
@@ -771,7 +771,7 @@
  */
 class Sdk
 {
-    const VERSION = '3.305.5';
+    const VERSION = '3.305.6';
 
     /** @var array Arguments for creating clients */
     private $args;