diff --git a/src/HyperV.Mcp.Server/HyperV.Mcp.Server.csproj b/src/HyperV.Mcp.Server/HyperV.Mcp.Server.csproj
index 3c149d7..cfc2d0f 100644
--- a/src/HyperV.Mcp.Server/HyperV.Mcp.Server.csproj
+++ b/src/HyperV.Mcp.Server/HyperV.Mcp.Server.csproj
@@ -17,6 +17,7 @@
     <!-- Phase 2 (issue #52): in-process PowerShell SDK runspace for IPowerShellHost.
          See /myplans/remoting/powershell-direct/powershell-direct-design.md — PSD-D5. -->
     <PackageReference Include="Microsoft.PowerShell.SDK" Version="7.4.6" />
+    <PackageReference Include="System.ServiceProcess.ServiceController" Version="10.0.9" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/HyperV.Mcp.Server.Tests/HyperV.Mcp.Server.Tests.csproj b/tests/HyperV.Mcp.Server.Tests/HyperV.Mcp.Server.Tests.csproj
index 958bb1d..6f4a038 100644
--- a/tests/HyperV.Mcp.Server.Tests/HyperV.Mcp.Server.Tests.csproj
+++ b/tests/HyperV.Mcp.Server.Tests/HyperV.Mcp.Server.Tests.csproj
@@ -18,7 +18,7 @@
     <PackageReference Include="FluentAssertions" Version="7.2.2" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.9" />
-    <PackageReference Include="System.ServiceProcess.ServiceController" Version="8.0.1" />
+    <PackageReference Include="System.ServiceProcess.ServiceController" Version="10.0.9" />
     <!-- Provides the "GitHubActions" test logger used by the CI workflows
          (.github/workflows/ci.yml and ci-hyperv.yml) for inline test annotations. -->
     <PackageReference Include="GitHubActionsTestLogger" Version="3.0.4" />