diff --git a/src/Web/AICalendar.ApiService/AICalendar.ApiService.csproj b/src/Web/AICalendar.ApiService/AICalendar.ApiService.csproj
index b736ad2..d07f9fb 100644
--- a/src/Web/AICalendar.ApiService/AICalendar.ApiService.csproj
+++ b/src/Web/AICalendar.ApiService/AICalendar.ApiService.csproj
@@ -17,7 +17,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Microsoft.Agents.AI.OpenAI" Version="1.0.0-preview.251125.1" />
+		<PackageReference Include="Microsoft.Agents.AI.OpenAI" Version="1.0.0-preview.251204.1" />
 		<PackageReference Include="CommunityToolkit.Aspire.OllamaSharp" Version="13.0.0" />
 
 		<PackageReference Include="ModelContextProtocol.AspNetCore" Version="0.4.1-preview.1" />