diff --git a/sdk/agentserver/azure-ai-agentserver-core/CHANGELOG.md b/sdk/agentserver/azure-ai-agentserver-core/CHANGELOG.md
index 9ae22a47e118..1b037caff354 100644
--- a/sdk/agentserver/azure-ai-agentserver-core/CHANGELOG.md
+++ b/sdk/agentserver/azure-ai-agentserver-core/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Release History
 
+## 2.0.0b12 (Unreleased)
+
+### Features Added
+
+### Breaking Changes
+
+### Bugs Fixed
+
+### Other Changes
+
 ## 2.0.0b11 (2026-08-05)
 
 ### Features Added
diff --git a/sdk/agentserver/azure-ai-agentserver-core/azure/ai/agentserver/core/_version.py b/sdk/agentserver/azure-ai-agentserver-core/azure/ai/agentserver/core/_version.py
index 34c63aa3b7b3..9ea374ac7388 100644
--- a/sdk/agentserver/azure-ai-agentserver-core/azure/ai/agentserver/core/_version.py
+++ b/sdk/agentserver/azure-ai-agentserver-core/azure/ai/agentserver/core/_version.py
@@ -2,4 +2,4 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # ---------------------------------------------------------
 
-VERSION = "2.0.0b11"
+VERSION = "2.0.0b12"