diff --git a/Names.xcodeproj/project.pbxproj b/Names.xcodeproj/project.pbxproj
index 15e14a3..209cd47 100644
--- a/Names.xcodeproj/project.pbxproj
+++ b/Names.xcodeproj/project.pbxproj
@@ -108,11 +108,12 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0900;
-				LastUpgradeCheck = 0900;
+				LastUpgradeCheck = 1000;
 				ORGANIZATIONNAME = "Vadym Markov";
 				TargetAttributes = {
 					D56EF5181F0C4B460011E83D = {
 						CreatedOnToolsVersion = 9.0;
+						LastSwiftMigration = 1000;
 					};
 				};
 			};
@@ -177,6 +178,7 @@
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
@@ -184,6 +186,7 @@
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
@@ -234,6 +237,7 @@
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
@@ -241,6 +245,7 @@
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
@@ -278,7 +283,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = codes.cocoaml.Names;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -291,7 +296,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = codes.cocoaml.Names;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;
diff --git a/Names.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/Names.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/Names.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/Names/AppDelegate.swift b/Names/AppDelegate.swift
index 72f3e74..23d82ff 100644
--- a/Names/AppDelegate.swift
+++ b/Names/AppDelegate.swift
@@ -9,7 +9,7 @@ final class AppDelegate: UIResponder, UIApplicationDelegate {
   // MARK: - Application lifecycle
 
   func application(_ application: UIApplication,
-                   didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+                   didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
     window = UIWindow()
     window?.rootViewController = navigationController
     window?.makeKeyAndVisible()
diff --git a/Names/ViewController.swift b/Names/ViewController.swift
index 565a242..3d2c2fe 100644
--- a/Names/ViewController.swift
+++ b/Names/ViewController.swift
@@ -88,12 +88,12 @@ extension ViewController: UITextFieldDelegate {
     let paragraph = NSMutableParagraphStyle()
     paragraph.minimumLineHeight = 36
 
-    let titleAttributes: [NSAttributedStringKey: Any] = [
+    let titleAttributes: [NSAttributedString.Key: Any] = [
       .font: UIFont.boldSystemFont(ofSize: 22),
       .paragraphStyle: paragraph
     ]
 
-    let valueAttributes: [NSAttributedStringKey: Any] = [
+    let valueAttributes: [NSAttributedString.Key: Any] = [
       .font: UIFont.systemFont(ofSize: 22),
       .paragraphStyle: paragraph
     ]