diff --git a/src/server/api/Sprk.Bff.Api/Sprk.Bff.Api.csproj b/src/server/api/Sprk.Bff.Api/Sprk.Bff.Api.csproj
index b038afe1..04e209fe 100644
--- a/src/server/api/Sprk.Bff.Api/Sprk.Bff.Api.csproj
+++ b/src/server/api/Sprk.Bff.Api/Sprk.Bff.Api.csproj
@@ -25,7 +25,7 @@
     <!-- Microsoft.Extensions.AI.OpenAI 10.3.0 requires OpenAI >= 2.8.0 (added in AIPL-050 for IChatClient bridge) -->
     <PackageReference Include="Microsoft.Extensions.AI" Version="10.3.0" />
     <PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="10.3.0" />
-    <PackageReference Include="Microsoft.Agents.AI" Version="1.0.0-rc1" />
+    <PackageReference Include="Microsoft.Agents.AI" Version="1.0.0-rc4" />
     <!-- OpenAI pinned to 2.8.0: required by Microsoft.Extensions.AI.OpenAI 10.3.0 IChatClient bridge -->
     <PackageReference Include="OpenAI" Version="2.8.0" />