diff --git a/Package@swift-6.0.swift b/Package@swift-6.0.swift
index a63315c3..75f8f839 100644
--- a/Package@swift-6.0.swift
+++ b/Package@swift-6.0.swift
@@ -68,8 +68,8 @@ let package = Package(
         .product(name: "SwiftCompilerPlugin", package: "swift-syntax"),
       ]
     ),
-  ]
-  //, swiftLanguageMode: [.v6]
+  ],
+  swiftLanguageVersions: [.v6]
 )
 
 #if !os(macOS) && !os(WASI)