diff --git a/core/getting-started/unit-testing-vb-mstest/PrimeService.Tests/PrimeService.Tests.vbproj b/core/getting-started/unit-testing-vb-mstest/PrimeService.Tests/PrimeService.Tests.vbproj
index 6f107a116e4..f5188bd6f39 100644
--- a/core/getting-started/unit-testing-vb-mstest/PrimeService.Tests/PrimeService.Tests.vbproj
+++ b/core/getting-started/unit-testing-vb-mstest/PrimeService.Tests/PrimeService.Tests.vbproj
@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageReference Include="MSTest.TestFramework" Version="3.4.3" />
-    <PackageReference Include="MSTest.TestAdapter" Version="3.4.1" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.4.3" />
   </ItemGroup>
 
   <ItemGroup>