diff --git a/src/Ookii.CommandLine.Tests/Ookii.CommandLine.Tests.csproj b/src/Ookii.CommandLine.Tests/Ookii.CommandLine.Tests.csproj
index 36a50e0..713f6ef 100644
--- a/src/Ookii.CommandLine.Tests/Ookii.CommandLine.Tests.csproj
+++ b/src/Ookii.CommandLine.Tests/Ookii.CommandLine.Tests.csproj
@@ -15,8 +15,8 @@
 
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-    <PackageReference Include="MSTest.TestFramework" Version="3.2.2" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.2.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.2.1" />
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