diff --git a/Example.xcodeproj/project.pbxproj b/Example.xcodeproj/project.pbxproj
index 042dddb..04cc3e9 100644
--- a/Example.xcodeproj/project.pbxproj
+++ b/Example.xcodeproj/project.pbxproj
@@ -288,6 +288,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 				Base,
 			);
@@ -491,11 +492,11 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				INFOPLIST_FILE = Example/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.aschuch.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0.1;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -504,11 +505,11 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				INFOPLIST_FILE = Example/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.aschuch.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0.1;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -534,7 +535,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0.1;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -558,7 +559,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "com.aschuch.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0.1;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -577,7 +578,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.aschuch.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0.1;
+				SWIFT_VERSION = 5.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Example.app/Example";
 			};
 			name = Debug;
@@ -590,7 +591,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.aschuch.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0.1;
+				SWIFT_VERSION = 5.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Example.app/Example";
 			};
 			name = Release;
diff --git a/Example/AppDelegate.swift b/Example/AppDelegate.swift
index 6d11608..891c29d 100644
--- a/Example/AppDelegate.swift
+++ b/Example/AppDelegate.swift
@@ -13,7 +13,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
     var window: UIWindow?
 
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]? = nil) -> Bool {
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil) -> Bool {
         // Override point for customization after application launch.
         return true
     }
diff --git a/QRCode.podspec b/QRCode.podspec
index 0080c9f..32fa457 100644
--- a/QRCode.podspec
+++ b/QRCode.podspec
@@ -1,13 +1,14 @@
 Pod::Spec.new do |s|
   s.name              = "QRCode"
-  s.version           = "2.0"
+  s.version           = "3.0"
   s.summary           = "A QRCode generator written in Swift."
   s.description       = "Generate QRCodes and customize their appearance."
   s.homepage          = "https://github.com/aschuch/QRCode"
   s.license           = { :type => "MIT", :file => "LICENSE" }
   s.author            = { "Alexander Schuch" => "alexander@schuch.me" }
   s.social_media_url  = "http://twitter.com/schuchalexander"
-  s.platform          = :ios, "8.0"
+  s.platform          = :ios, "9.3"
+  s.swift_version     = "5.0"
   s.source            = { :git => "https://github.com/aschuch/QRCode.git", :tag => s.version }
   s.requires_arc      = true
   s.source_files      = "QRCode/QRCode.swift", "QRCode/UIImageViewExtension.swift", "QRCode/CIColorExtension.swift", "QRCode/CIImageExtension.swift"
diff --git a/QRCode/CIColorExtension.swift b/QRCode/CIColorExtension.swift
index 40b4435..50d959d 100644
--- a/QRCode/CIColorExtension.swift
+++ b/QRCode/CIColorExtension.swift
@@ -19,7 +19,7 @@ public extension CIColor {
     ///     `aabbccff`
     ///
     /// - parameter rgba:    The hex string to parse in rgba format
-    public convenience init(rgba: String) {
+    convenience init(rgba: String) {
         var r: CGFloat = 0.0
         var g: CGFloat = 0.0
         var b: CGFloat = 0.0
@@ -29,7 +29,7 @@ public extension CIColor {
         var hexValue: CUnsignedLongLong = 0
         
         if scanner.scanHexInt64(&hexValue) {
-            let length = rgba.characters.count
+            let length = rgba.count
             
             switch (length) {
             case 3: