diff --git a/Directory.Packages.props b/Directory.Packages.props
index dd304f5..d2c7d78 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -14,7 +14,7 @@
     <PackageVersion Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="10.0.201" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="5.3.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
-    <PackageVersion Include="MSTest.TestAdapter" Version="4.1.0" />
+    <PackageVersion Include="MSTest.TestAdapter" Version="4.2.1" />
     <PackageVersion Include="MSTest.TestFramework" Version="4.2.1" />
     <PackageVersion Include="System.CommandLine.DragonFruit" Version="0.4.0-alpha.25320.106" />
     <!-- Reference-only packages for test framework namespace resolution in analyzer tests -->