diff --git a/src/SourceBrowser/src/Directory.Packages.props b/src/SourceBrowser/src/Directory.Packages.props
index ceb1502..549a45b 100644
--- a/src/SourceBrowser/src/Directory.Packages.props
+++ b/src/SourceBrowser/src/Directory.Packages.props
@@ -29,8 +29,8 @@
 
     <!-- test dependencies -->
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
-    <PackageVersion Include="MSTest.TestAdapter" Version="3.9.3" />
-    <PackageVersion Include="MSTest.TestFramework" Version="3.9.3" />
+    <PackageVersion Include="MSTest.TestAdapter" Version="4.0.0" />
+    <PackageVersion Include="MSTest.TestFramework" Version="4.0.0" />
     <PackageVersion Include="Selenium.WebDriver" Version="3.14.0" />
     <PackageVersion Include="coverlet.collector" Version="1.2.0" />
     <PackageVersion Include="nunit" Version="3.12.0" />