diff --git a/test/Microsoft.NET.Build.Tests/GivenThatWeWantToBuildALibrary.cs b/test/Microsoft.NET.Build.Tests/GivenThatWeWantToBuildALibrary.cs
index 0a701c97c8cd..69e701191766 100644
--- a/test/Microsoft.NET.Build.Tests/GivenThatWeWantToBuildALibrary.cs
+++ b/test/Microsoft.NET.Build.Tests/GivenThatWeWantToBuildALibrary.cs
@@ -709,6 +709,7 @@ private void TestInvalidTargetFramework(string testName, string targetFramework,
         }
 
         [Theory]
+        [InlineData("netcoreapp9.1")]
         [InlineData("netcoreapp10.1")]
         [InlineData("netstandard2.2")]
         public void It_fails_to_build_if_targeting_a_higher_framework_than_is_supported(string targetFramework)