diff --git a/src/BizHawk.Tests.Testroms.GB/BizHawk.Tests.Testroms.GB.csproj b/src/BizHawk.Tests.Testroms.GB/BizHawk.Tests.Testroms.GB.csproj
index 5ae245af09..d719927b99 100644
--- a/src/BizHawk.Tests.Testroms.GB/BizHawk.Tests.Testroms.GB.csproj
+++ b/src/BizHawk.Tests.Testroms.GB/BizHawk.Tests.Testroms.GB.csproj
@@ -18,8 +18,8 @@
 	<!-- BIZHAWKTEST_SAVE_IMAGES=none => no extra defines -->
 	<ItemGroup>
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" PrivateAssets="all" />
-		<PackageReference Include="MSTest.TestAdapter" Version="3.0.2" />
-		<PackageReference Include="MSTest.TestFramework" Version="3.0.2" />
+		<PackageReference Include="MSTest.TestAdapter" Version="2.2.9" />
+		<PackageReference Include="MSTest.TestFramework" Version="2.2.9" />
 		<PackageReference Include="JunitXml.TestLogger" Version="3.0.124" />
 		<PackageReference Include="Magick.NET-Q8-AnyCPU" Version="13.0.1" />
 		<ProjectReference Include="$(ProjectDir)../BizHawk.Client.Common/BizHawk.Client.Common.csproj" />
diff --git a/src/BizHawk.Tests/BizHawk.Tests.csproj b/src/BizHawk.Tests/BizHawk.Tests.csproj
index c21515c4d8..aea54efd1d 100644
--- a/src/BizHawk.Tests/BizHawk.Tests.csproj
+++ b/src/BizHawk.Tests/BizHawk.Tests.csproj
@@ -12,8 +12,8 @@
 	</PropertyGroup>
 	<ItemGroup>
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" PrivateAssets="all" />
-		<PackageReference Include="MSTest.TestAdapter" Version="3.0.2" PrivateAssets="all" />
-		<PackageReference Include="MSTest.TestFramework" Version="3.0.2" PrivateAssets="all" />
+		<PackageReference Include="MSTest.TestAdapter" Version="2.2.9" PrivateAssets="all" />
+		<PackageReference Include="MSTest.TestFramework" Version="2.2.9" PrivateAssets="all" />
 		<PackageReference Include="JunitXml.TestLogger" Version="3.0.124" PrivateAssets="all" />
 		<ProjectReference Include="$(ProjectDir)../BizHawk.Client.Common/BizHawk.Client.Common.csproj" />
 		<Reference Include="NLua, Version=1.4.1.0, Culture=neutral, PublicKeyToken=null, processorArchitecture=MSIL" SpecificVersion="false" HintPath="$(ProjectDir)../../References/NLua.dll" Private="true" />