diff --git a/CICD.Tools.MSTeamsWorkflowWebhookCard.LibTests/CICD.Tools.MSTeamsWorkflowWebhookCard.LibTests.csproj b/CICD.Tools.MSTeamsWorkflowWebhookCard.LibTests/CICD.Tools.MSTeamsWorkflowWebhookCard.LibTests.csproj
index 19905d9..c74ba7f 100644
--- a/CICD.Tools.MSTeamsWorkflowWebhookCard.LibTests/CICD.Tools.MSTeamsWorkflowWebhookCard.LibTests.csproj
+++ b/CICD.Tools.MSTeamsWorkflowWebhookCard.LibTests/CICD.Tools.MSTeamsWorkflowWebhookCard.LibTests.csproj
@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Logging" Version="9.0.2" />
-    <PackageReference Include="MSTest" Version="3.10.3" />
+    <PackageReference Include="MSTest" Version="4.0.2" />
     <PackageReference Include="coverlet.collector" Version="6.0.4">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>