diff --git a/Package.swift b/Package.swift
index 8466f3e..89c82d0 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,5 @@
-// swift-tools-version:5.1
+// swift-tools-version:5.3
+
 import PackageDescription
 
 let package = Package(