diff --git a/X10D.Tests/X10D.Tests.csproj b/X10D.Tests/X10D.Tests.csproj
index 41d2e68..9853d23 100644
--- a/X10D.Tests/X10D.Tests.csproj
+++ b/X10D.Tests/X10D.Tests.csproj
@@ -10,6 +10,10 @@
         <CollectCoverage>true</CollectCoverage>
     </PropertyGroup>
 
+    <PropertyGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
+        <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
+    </PropertyGroup>
+
     <ItemGroup>
         <PackageReference Include="Microsoft.Extensions.Hosting" Version="7.0.0"/>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0"/>