diff --git a/stdc.Tests/stdc.Tests.csproj b/stdc.Tests/stdc.Tests.csproj
index c5d5116..a43e996 100644
--- a/stdc.Tests/stdc.Tests.csproj
+++ b/stdc.Tests/stdc.Tests.csproj
@@ -13,7 +13,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="NUnit3TestAdapter" Version="6.1.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
   </ItemGroup>
 
   <ItemGroup>