diff --git a/Package.swift b/Package.swift
index 507af30..31c7770 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,3 +1,4 @@
+// swift-tools-version:5.2
 import PackageDescription
 
 let package = Package(
@@ -5,4 +6,4 @@ let package = Package(
 	dependencies: [],
     exclude: ["Sources/Info.plist", "Sources/SwiftyTimer.h", "SwiftyTimerTests"]
     
-)
\ No newline at end of file
+)