diff --git a/MergerLogicUnitTests/MergerLogicUnitTests.csproj b/MergerLogicUnitTests/MergerLogicUnitTests.csproj
index bafdd798..ab136f80 100644
--- a/MergerLogicUnitTests/MergerLogicUnitTests.csproj
+++ b/MergerLogicUnitTests/MergerLogicUnitTests.csproj
@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
     <PackageReference Include="Moq" Version="4.18.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
+    <PackageReference Include="MSTest.TestAdapter" Version="4.1.0" />
     <PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
     <PackageReference Include="coverlet.collector" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>
diff --git a/MergerServiceUnitTests/MergerServiceUnitTests.csproj b/MergerServiceUnitTests/MergerServiceUnitTests.csproj
index 4213e99a..d78e6882 100644
--- a/MergerServiceUnitTests/MergerServiceUnitTests.csproj
+++ b/MergerServiceUnitTests/MergerServiceUnitTests.csproj
@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
     <PackageReference Include="Moq" Version="4.18.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
+    <PackageReference Include="MSTest.TestAdapter" Version="4.1.0" />
     <PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
     <PackageReference Include="coverlet.collector" Version="3.1.2">
       <PrivateAssets>all</PrivateAssets>