diff --git a/SwiftValidatorTests/SwiftValidatorTests.swift b/SwiftValidatorTests/SwiftValidatorTests.swift
index fab19bc..dad6339 100644
--- a/SwiftValidatorTests/SwiftValidatorTests.swift
+++ b/SwiftValidatorTests/SwiftValidatorTests.swift
@@ -366,7 +366,7 @@ class SwiftValidatorTests: XCTestCase {
         }
         REGISTER_TXT_FIELD.text = INVALID_EMAIL
         REGISTER_VALIDATOR.validateField(REGISTER_TXT_FIELD) { error in
-            XCTAssert(error?.errorMessage.characters.count ?? 0 > 0, "Should state 'invalid email'")
+            XCTAssert(error?.errorMessage.count ?? 0 > 0, "Should state 'invalid email'")
         }
     }
     
diff --git a/Validator.xcodeproj/project.pbxproj b/Validator.xcodeproj/project.pbxproj
index e0ff2e2..519edb0 100644
--- a/Validator.xcodeproj/project.pbxproj
+++ b/Validator.xcodeproj/project.pbxproj
@@ -410,11 +410,11 @@
 					};
 					FB465CB21B9884F400398388 = {
 						CreatedOnToolsVersion = 6.4;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 1010;
 					};
 					FB465CBC1B9884F400398388 = {
 						CreatedOnToolsVersion = 6.4;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 1010;
 						TestTargetID = 62D1AE161A1E6D4400E4DFF8;
 					};
 				};
@@ -687,7 +687,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "me.jeffpotter.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -700,7 +700,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "me.jeffpotter.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -755,7 +755,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "me.jeffpotter.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -781,7 +781,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -806,7 +806,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.levous.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Validator.app/Validator";
 			};
 			name = Debug;
@@ -827,7 +827,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "com.levous.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Validator.app/Validator";
 			};
 			name = Release;
diff --git a/Validator/AppDelegate.swift b/Validator/AppDelegate.swift
index a68462f..b96b8d2 100644
--- a/Validator/AppDelegate.swift
+++ b/Validator/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/Validator/ViewController.swift b/Validator/ViewController.swift
index 5fc9871..786b071 100644
--- a/Validator/ViewController.swift
+++ b/Validator/ViewController.swift
@@ -69,7 +69,7 @@ class ViewController: UIViewController , ValidationDelegate, UITextFieldDelegate
     
     func validationSuccessful() {
         print("Validation Success!")
-        let alert = UIAlertController(title: "Success", message: "You are validated!", preferredStyle: UIAlertControllerStyle.alert)
+        let alert = UIAlertController(title: "Success", message: "You are validated!", preferredStyle: UIAlertController.Style.alert)
         let defaultAction = UIAlertAction(title: "OK", style: .default, handler: nil)
         alert.addAction(defaultAction)
         self.present(alert, animated: true, completion: nil)