diff --git a/Package.swift b/Package.swift
index 8fdbaa6..1fee31e 100644
--- a/Package.swift
+++ b/Package.swift
@@ -6,6 +6,8 @@ import CoreGraphics
 
 let package = Package(
     name: "SwiftMath",
+    defaultLocalization: "en",
+    platforms: [.iOS(.v10), .macOS(.v11)],
     products: [
         // Products define the executables and libraries a package produces, and make them visible to other packages.
         .library(