diff --git a/tests/NetEvolve.Arguments.Tests.Unit/NetEvolve.Arguments.Tests.Unit.csproj b/tests/NetEvolve.Arguments.Tests.Unit/NetEvolve.Arguments.Tests.Unit.csproj
index 41448ae..105b62a 100644
--- a/tests/NetEvolve.Arguments.Tests.Unit/NetEvolve.Arguments.Tests.Unit.csproj
+++ b/tests/NetEvolve.Arguments.Tests.Unit/NetEvolve.Arguments.Tests.Unit.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
+    <TargetFrameworks>net6.0;net8.0;net9.0</TargetFrameworks>
     <SuppressTfmSupportBuildWarnings>true</SuppressTfmSupportBuildWarnings>
 
     <NoWarn>$(NoWarn);NU1701</NoWarn>