diff --git a/CHANGELOG.md b/CHANGELOG.md
index af9f09fecb..e73bbbba2f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## next release
+## 3.308.0 - 2024-05-21
 
 * `Aws\StorageGateway` - Added new SMBSecurityStrategy enum named MandatoryEncryptionNoAes128, new mode enforces encryption and disables AES 128-bit algorithums.
 * `Aws\Lightsail` - This release adds support for Amazon Lightsail instances to switch between dual-stack or IPv4 only and IPv6-only public IP address types.
diff --git a/src/Sdk.php b/src/Sdk.php
index e9acc8d365..aea86e63e7 100644
--- a/src/Sdk.php
+++ b/src/Sdk.php
@@ -769,7 +769,7 @@
  */
 class Sdk
 {
-    const VERSION = '3.307.2';
+    const VERSION = '3.308.0';
 
     /** @var array Arguments for creating clients */
     private $args;