diff --git a/src/core/Akka.Persistence.TestKit.Tests/Akka.Persistence.TestKit.Tests.csproj b/src/core/Akka.Persistence.TestKit.Tests/Akka.Persistence.TestKit.Tests.csproj
index 22340047570..dc6e412d705 100644
--- a/src/core/Akka.Persistence.TestKit.Tests/Akka.Persistence.TestKit.Tests.csproj
+++ b/src/core/Akka.Persistence.TestKit.Tests/Akka.Persistence.TestKit.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\xunitSettings.props" />
 
   <PropertyGroup>
@@ -12,7 +12,7 @@
     <PackageReference Include="xunit" Version="$(XunitVersion)" />
     <PackageReference Include="xunit.runner.utility" Version="$(XunitVersion)" />
     <PackageReference Include="xunit.runner.visualstudio" Version="$(XunitVersion)" />
-    <PackageReference Include="TeamCity.ServiceMessages" Version="3.0.13" />
+    <PackageReference Include="TeamCity.ServiceMessages" Version="4.1.1" />
     <PackageReference Include="FluentAssertions" Version="$(FluentAssertionsVersion)" />
   </ItemGroup>