diff --git a/swift/Package.swift b/swift/Package.swift
index fea88e3e..8730f481 100644
--- a/swift/Package.swift
+++ b/swift/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.1
+// swift-tools-version:5.3
 
 import PackageDescription