diff --git a/Typist.swift b/Typist.swift
index 7500af4..aefc779 100644
--- a/Typist.swift
+++ b/Typist.swift
@@ -313,3 +313,24 @@ extension Typist: UIGestureRecognizerDelegate {
     }
     
 }
+
+
+// MARK: UIView extensions (convenience)
+
+extension UIView.AnimationOptions {
+    public init(curve: UIView.AnimationCurve) {
+        switch curve {
+        case .easeIn:
+            self = [.curveEaseIn]
+        case .easeOut:
+            self = [.curveEaseOut]
+        case .easeInOut:
+            self = [.curveEaseInOut]
+        case .linear:
+            self = [.curveLinear]
+        @unknown default:
+            self = [.curveLinear]
+        }
+    }
+}
+
diff --git a/Typist.xcodeproj/project.pbxproj b/Typist.xcodeproj/project.pbxproj
index 2fd13cb..3e94551 100644
--- a/Typist.xcodeproj/project.pbxproj
+++ b/Typist.xcodeproj/project.pbxproj
@@ -7,7 +7,6 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
-		7100A1701FD36B4E001098A4 /* Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7100A16F1FD36B4E001098A4 /* Extensions.swift */; };
 		990950321D9928210040D759 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 990950311D9928210040D759 /* AppDelegate.swift */; };
 		990950341D9928210040D759 /* ViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 990950331D9928210040D759 /* ViewController.swift */; };
 		990950371D9928210040D759 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 990950351D9928210040D759 /* Main.storyboard */; };
@@ -19,7 +18,6 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
-		7100A16F1FD36B4E001098A4 /* Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Extensions.swift; sourceTree = "<group>"; };
 		9909502E1D9928210040D759 /* Typist-Demo.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "Typist-Demo.app"; sourceTree = BUILT_PRODUCTS_DIR; };
 		990950311D9928210040D759 /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		990950331D9928210040D759 /* ViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ViewController.swift; sourceTree = "<group>"; };
@@ -74,7 +72,6 @@
 			children = (
 				990950311D9928210040D759 /* AppDelegate.swift */,
 				990950331D9928210040D759 /* ViewController.swift */,
-				7100A16F1FD36B4E001098A4 /* Extensions.swift */,
 				990950351D9928210040D759 /* Main.storyboard */,
 				990950381D9928210040D759 /* Assets.xcassets */,
 				9909503A1D9928210040D759 /* LaunchScreen.storyboard */,
@@ -155,7 +152,7 @@
 				TargetAttributes = {
 					9909502D1D9928210040D759 = {
 						CreatedOnToolsVersion = 8.0;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1020;
 						ProvisioningStyle = Automatic;
 					};
 					995B3BA41DABB30B0027A37E = {
@@ -209,7 +206,6 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				7100A1701FD36B4E001098A4 /* Extensions.swift in Sources */,
 				995B3BB11DABB46D0027A37E /* Typist.swift in Sources */,
 				990950341D9928210040D759 /* ViewController.swift in Sources */,
 				990950321D9928210040D759 /* AppDelegate.swift in Sources */,
@@ -366,8 +362,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = tototvalavadze.Typist;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -380,8 +375,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = tototvalavadze.Typist;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
diff --git a/Typist/AppDelegate.swift b/Typist/AppDelegate.swift
index a73ff49..16c63c6 100644
--- a/Typist/AppDelegate.swift
+++ b/Typist/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/Typist/Extensions.swift b/Typist/Extensions.swift
deleted file mode 100644
index 06cbc2b..0000000
--- a/Typist/Extensions.swift
+++ /dev/null
@@ -1,24 +0,0 @@
-//
-//  Extensions.swift
-//  Typist-Demo
-//
-//  Created by Lasha Efremidze on 12/2/17.
-//  Copyright © 2017 Toto Tvalavadze. All rights reserved.
-//
-
-import UIKit
-
-extension UIViewAnimationOptions {
-    init(curve: UIViewAnimationCurve) {
-        switch curve {
-        case .easeIn:
-            self = [.curveEaseIn]
-        case .easeOut:
-            self = [.curveEaseOut]
-        case .easeInOut:
-            self = [.curveEaseInOut]
-        case .linear:
-            self = [.curveLinear]
-        }
-    }
-}
diff --git a/Typist/ViewController.swift b/Typist/ViewController.swift
index f1c956b..cd07807 100644
--- a/Typist/ViewController.swift
+++ b/Typist/ViewController.swift
@@ -45,7 +45,7 @@ class ViewController: UIViewController {
             .on(event: .willHide) { [unowned self] options in
                 // .willHide is used in cases when keyboard is *not* dismiss interactively.
                 // e.g. when `.resignFirstResponder()` is called on textField.
-                UIView.animate(withDuration: options.animationDuration, delay: 0, options: UIViewAnimationOptions(curve: options.animationCurve), animations: {
+                UIView.animate(withDuration: options.animationDuration, delay: 0, options: UIView.AnimationOptions(curve: options.animationCurve), animations: {
                     self.bottom.constant = 0
                     self.tableView.contentInset.bottom = self.toolbar.bounds.height
                     self.tableView.scrollIndicatorInsets.bottom = self.toolbar.bounds.height