diff --git a/src/Abstractions/test/Asp.Versioning.Abstractions.Tests/net6.0/ApiVersionTest.cs b/src/Abstractions/test/Asp.Versioning.Abstractions.Tests/net6.0/ApiVersionTest.cs
index b650303b..7620bc38 100644
--- a/src/Abstractions/test/Asp.Versioning.Abstractions.Tests/net6.0/ApiVersionTest.cs
+++ b/src/Abstractions/test/Asp.Versioning.Abstractions.Tests/net6.0/ApiVersionTest.cs
@@ -6,6 +6,7 @@ public partial class ApiVersionTest
 {
     [Theory]
     [MemberData( nameof( FormatData ) )]
+    [AssumeCulture( "en-us" )]
     public void try_format_format_should_return_expected_string( string format, string text, string formattedString )
     {
         // arrange
@@ -19,4 +20,4 @@ public void try_format_format_should_return_expected_string( string format, stri
         result.Should().BeTrue();
         buffer[..written].ToString().Should().Be( formattedString );
     }
-}
\ No newline at end of file
+}