diff --git a/demo/Authplane.Mcp.Demo.csproj b/demo/Authplane.Mcp.Demo.csproj
index e902a80..f81b852 100644
--- a/demo/Authplane.Mcp.Demo.csproj
+++ b/demo/Authplane.Mcp.Demo.csproj
@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="ModelContextProtocol.AspNetCore" Version="1.0.0" />
+    <PackageReference Include="ModelContextProtocol.AspNetCore" Version="2.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Authplane.Mcp/Authplane.Mcp.csproj b/src/Authplane.Mcp/Authplane.Mcp.csproj
index 488d2ed..0aef9a7 100644
--- a/src/Authplane.Mcp/Authplane.Mcp.csproj
+++ b/src/Authplane.Mcp/Authplane.Mcp.csproj
@@ -34,7 +34,7 @@
 
   <ItemGroup>
     <!-- MCP C# SDK - HTTP server and hosting extensions -->
-    <PackageReference Include="ModelContextProtocol.AspNetCore" Version="1.0.0" />
+    <PackageReference Include="ModelContextProtocol.AspNetCore" Version="2.1.0" />
 
     <!-- Core Authplane SDK project (local sibling repo).
          Adjust/remove this when Authplane is published as a NuGet package. -->