diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14c77acf48..a3e48f8423 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## next release
+## 3.109.1 - 2019-08-09
 
 * `Aws\` - Retry InvalidIdentityToken errors for AssumeRoleWithWebIdentityCredentialProvider
 * `Aws\GuardDuty` - New "evidence" field in the finding model to provide evidence information explaining why the finding has been triggered. Currently only threat-intelligence findings have this field. Some documentation updates.
diff --git a/src/Sdk.php b/src/Sdk.php
index b5eca6d53a..dba22e30d0 100644
--- a/src/Sdk.php
+++ b/src/Sdk.php
@@ -377,7 +377,7 @@
  */
 class Sdk
 {
-    const VERSION = '3.109.0';
+    const VERSION = '3.109.1';
 
     /** @var array Arguments for creating clients */
     private $args;