diff --git a/Package.swift b/Package.swift
index 1c96b66..ae34d26 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.0
+// swift-tools-version:5.9
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
@@ -6,7 +6,7 @@ import PackageDescription
 let package = Package(
     name: "Cluster",
     platforms: [
-        .iOS(.v8)
+        .iOS(.v12)
     ],
     products: [
         // Products define the executables and libraries produced by a package, and make them visible to other packages.
diff --git a/README.md b/README.md
index d808096..c659115 100644
--- a/README.md
+++ b/README.md
@@ -34,8 +34,7 @@ Cluster is an easy map annotation clustering library. This repository uses an ef
 
 ## Requirements
 
-- iOS 8.0+
-- Xcode 9.0+
+- iOS 12.0+
 - Swift 5 (Cluster 3.x), Swift 4 (Cluster 2.x), Swift 3 (Cluster 1.x)
 
 ## Demo