diff --git a/Package.swift b/Package.swift
index e28dbd0..bd4e26e 100644
--- a/Package.swift
+++ b/Package.swift
@@ -11,6 +11,10 @@ import PackageDescription
 /// The LevenshteinTransformations package.
 let package = Package(
     name: "LevenshteinTransformations",
+    platforms: [
+        .macOS(.v10_15),
+        .iOS(.v13)
+    ],
     products: [
         .library(
             name: "LevenshteinTransformations",