diff --git a/Package.swift b/Package.swift
index b71f272..a4435dc 100644
--- a/Package.swift
+++ b/Package.swift
@@ -24,8 +24,7 @@
 //  THE SOFTWARE.
 
 
-import Foundation
-
+// swift-tools-version:5.0
 import PackageDescription
 
 let package = Package(