diff --git a/src/Intrinio.Net.Tests/Intrinio.Net.Tests.csproj b/src/Intrinio.Net.Tests/Intrinio.Net.Tests.csproj
index 5435d64..c5dd4e6 100644
--- a/src/Intrinio.Net.Tests/Intrinio.Net.Tests.csproj
+++ b/src/Intrinio.Net.Tests/Intrinio.Net.Tests.csproj
@@ -25,7 +25,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.2" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.2.7" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
     <PackageReference Include="MSTest.TestFramework" Version="2.2.7" />
     <PackageReference Include="NUnit" Version="3.13.3" />
   </ItemGroup>