diff --git a/sdk/agentserver/azure-ai-agentserver-activity/CHANGELOG.md b/sdk/agentserver/azure-ai-agentserver-activity/CHANGELOG.md
index 2b1e3230a564..a0ed214687da 100644
--- a/sdk/agentserver/azure-ai-agentserver-activity/CHANGELOG.md
+++ b/sdk/agentserver/azure-ai-agentserver-activity/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Release History
 
+## 1.0.0b3 (Unreleased)
+
+### Features Added
+
+### Breaking Changes
+
+### Bugs Fixed
+
+### Other Changes
+
 ## 1.0.0b2 (2026-07-28)
 
 ### Other Changes
diff --git a/sdk/agentserver/azure-ai-agentserver-activity/azure/ai/agentserver/activity/_version.py b/sdk/agentserver/azure-ai-agentserver-activity/azure/ai/agentserver/activity/_version.py
index 58bdf80c74ff..a4315c120d98 100644
--- a/sdk/agentserver/azure-ai-agentserver-activity/azure/ai/agentserver/activity/_version.py
+++ b/sdk/agentserver/azure-ai-agentserver-activity/azure/ai/agentserver/activity/_version.py
@@ -2,4 +2,4 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # ---------------------------------------------------------
 
-VERSION = "1.0.0b2"
+VERSION = "1.0.0b3"