diff --git a/.swift-version b/.swift-version
index a3ec5a4..bf77d54 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-3.2
+4.2
diff --git a/TJBioAuthentication.podspec b/TJBioAuthentication.podspec
index a0fdb82..bcecc2c 100644
--- a/TJBioAuthentication.podspec
+++ b/TJBioAuthentication.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'TJBioAuthentication'
-  s.version          = '1.1.0'
+  s.version          = '1.2.0'
   s.summary          = 'Apple biometric authentication for Touch ID and Face ID.'
  
   s.description      = 'Apple biometric authentication for Touch ID and Face ID. Now you can authenticate with Apple Face ID or Touch ID'
diff --git a/TJBioAuthentication/TJBioAuthentication.xcodeproj/project.pbxproj b/TJBioAuthentication/TJBioAuthentication.xcodeproj/project.pbxproj
index 1d6cb94..6302037 100644
--- a/TJBioAuthentication/TJBioAuthentication.xcodeproj/project.pbxproj
+++ b/TJBioAuthentication/TJBioAuthentication.xcodeproj/project.pbxproj
@@ -127,6 +127,7 @@
 				TargetAttributes = {
 					B854ECE51FACC5FD006225B0 = {
 						CreatedOnToolsVersion = 9.0;
+						LastSwiftMigration = 1010;
 						ProvisioningStyle = Automatic;
 					};
 				};
@@ -321,7 +322,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.jalsa.TJBioAuthentication;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -337,7 +338,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.jalsa.TJBioAuthentication;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;
diff --git a/TJBioAuthentication/TJBioAuthentication/AppDelegate.swift b/TJBioAuthentication/TJBioAuthentication/AppDelegate.swift
index 53db6b9..6a8d964 100644
--- a/TJBioAuthentication/TJBioAuthentication/AppDelegate.swift
+++ b/TJBioAuthentication/TJBioAuthentication/AppDelegate.swift
@@ -14,7 +14,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     var window: UIWindow?
 
 
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
         // Override point for customization after application launch.
         return true
     }
diff --git a/TJBioAuthentication/TJBioAuthentication/BioAuth/TJBioAuthenticator.swift b/TJBioAuthentication/TJBioAuthentication/BioAuth/TJBioAuthenticator.swift
index b55814a..0627983 100644
--- a/TJBioAuthentication/TJBioAuthentication/BioAuth/TJBioAuthenticator.swift
+++ b/TJBioAuthentication/TJBioAuthentication/BioAuth/TJBioAuthenticator.swift
@@ -62,7 +62,7 @@ public extension TJBioAuthenticator {
     
     
     // Biometric authentication
-    func authenticateUserWithBiometrics(reason: String = "", fallbackTitle: String? = "", cancelTitle: String? = "", success successBlock:@escaping AuthenticationSuccess, failure failureBlock:@escaping AuthenticationFailure){
+    func authenticateUserWithBiometrics(reason: String = "", fallbackTitle: String? = "", cancelTitle: String? = "", success successBlock:@escaping AuthenticationSuccess, failure failureBlock:@escaping AuthenticationFailure) {
         let reasonString = reason.isEmpty ? TJBioAuthenticator.shared.defaultBiometricAuthenticationReason() : reason
         
         let context = LAContext()
@@ -117,8 +117,7 @@ extension TJBioAuthenticator {
 }
 
 // MARK:- Get default messages
-extension TJBioAuthenticator
-{
+extension TJBioAuthenticator {
     // get default bio authentication reason
     func defaultBiometricAuthenticationReason() -> String {
         return TJDefaultMessages.defaultReasonMessage.rawValue
diff --git a/TJBioAuthentication/TJBioAuthentication/BioAuth/TJDefaultMessages.swift b/TJBioAuthentication/TJBioAuthentication/BioAuth/TJDefaultMessages.swift
index 0df4075..5fe8db2 100644
--- a/TJBioAuthentication/TJBioAuthentication/BioAuth/TJDefaultMessages.swift
+++ b/TJBioAuthentication/TJBioAuthentication/BioAuth/TJDefaultMessages.swift
@@ -27,8 +27,7 @@
 
 import Foundation
 import UIKit
-enum TJDefaultMessages : String
-{
+enum TJDefaultMessages : String {
     case defaultReasonMessage = "Authentication is needed to access your app."
     case lockoutReasonMessage = "Too many failed attempts."
 }