diff --git a/test/SourceGenerator/Directory.Build.props b/test/SourceGenerator/Directory.Build.props
index 333fb2eee..66f1aa5ec 100644
--- a/test/SourceGenerator/Directory.Build.props
+++ b/test/SourceGenerator/Directory.Build.props
@@ -12,7 +12,7 @@
         <Compile Include="../Generated/*.cs" />
     </ItemGroup>
     <ItemGroup>
-        <PackageReference Include="Refitter.SourceGenerator" Version="1.3.2" />
+        <PackageReference Include="Refitter.SourceGenerator" Version="1.4.0" />
         <PackageReference Include="System.ComponentModel.Annotations" Version="5.0.0" />
         <PackageReference Include="System.Runtime.Serialization.Primitives" Version="4.3.0" />
         <PackageReference Include="System.Text.Json" Version="8.0.5" />