diff --git a/Demo/Demo.xcodeproj/project.pbxproj b/Demo/Demo.xcodeproj/project.pbxproj
index e5adbab..fc990ca 100755
--- a/Demo/Demo.xcodeproj/project.pbxproj
+++ b/Demo/Demo.xcodeproj/project.pbxproj
@@ -139,7 +139,7 @@
 					9D98823619BC69CA00B790C6 = {
 						CreatedOnToolsVersion = 6.0;
 						DevelopmentTeam = 5G38N4D8G2;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Automatic;
 					};
 				};
@@ -306,8 +306,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = co.kaishin.gifu.demo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 1;
 			};
 			name = Debug;
@@ -327,8 +326,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 1;
 			};
 			name = Release;
diff --git a/Demo/Source/AppDelegate.swift b/Demo/Source/AppDelegate.swift
index 1c846fe..ae3aff5 100755
--- a/Demo/Source/AppDelegate.swift
+++ b/Demo/Source/AppDelegate.swift
@@ -5,7 +5,7 @@ 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 {
     return true
   }
 }
diff --git a/Gifu-tvOSTests/Gifu-tvOSTests.swift b/Gifu-tvOSTests/Gifu-tvOSTests.swift
index 0585c79..82a4f4f 100644
--- a/Gifu-tvOSTests/Gifu-tvOSTests.swift
+++ b/Gifu-tvOSTests/Gifu-tvOSTests.swift
@@ -12,7 +12,7 @@ class DummyAnimatable: GIFAnimatable {
     var image: UIImage? = nil
     var layer = CALayer()
     var frame: CGRect = .zero
-    var contentMode: UIViewContentMode = .scaleToFill
+    var contentMode: UIView.ContentMode = .scaleToFill
     func animatorHasNewFrame() {}
 }
 
diff --git a/Gifu.xcodeproj/project.pbxproj b/Gifu.xcodeproj/project.pbxproj
index 4cff8b3..e9e718f 100644
--- a/Gifu.xcodeproj/project.pbxproj
+++ b/Gifu.xcodeproj/project.pbxproj
@@ -353,15 +353,17 @@
 					};
 					00B8C73D1A364DA400C188E7 = {
 						CreatedOnToolsVersion = 6.1.1;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Manual;
 					};
 					71E8B2DC20387D830037BA62 = {
 						CreatedOnToolsVersion = 9.2;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Automatic;
 					};
 					71E8B2E420387D830037BA62 = {
 						CreatedOnToolsVersion = 9.2;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Automatic;
 					};
 				};
@@ -664,8 +666,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -688,8 +689,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -717,7 +717,7 @@
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 11.2;
 			};
@@ -748,7 +748,7 @@
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 11.2;
 			};
@@ -772,7 +772,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 11.2;
 			};
@@ -797,7 +797,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 11.2;
 			};
diff --git a/Source/Classes/Animator.swift b/Source/Classes/Animator.swift
index e59e006..544e794 100644
--- a/Source/Classes/Animator.swift
+++ b/Source/Classes/Animator.swift
@@ -70,7 +70,7 @@ public class Animator {
   /// - parameter contentMode: The view content mode to use for the individual frames.
   /// - parameter loopCount: Desired number of loops, <= 0 for infinite loop.
   /// - parameter completionHandler: Completion callback function
-  func prepareForAnimation(withGIFNamed imageName: String, size: CGSize, contentMode: UIViewContentMode, loopCount: Int = 0, completionHandler: (() -> Void)? = nil) {
+  func prepareForAnimation(withGIFNamed imageName: String, size: CGSize, contentMode: UIView.ContentMode, loopCount: Int = 0, completionHandler: (() -> Void)? = nil) {
     guard let extensionRemoved = imageName.components(separatedBy: ".")[safe: 0],
       let imagePath = Bundle.main.url(forResource: extensionRemoved, withExtension: "gif"),
       let data = try? Data(contentsOf: imagePath) else { return }
@@ -89,7 +89,7 @@ public class Animator {
   /// - parameter contentMode: The view content mode to use for the individual frames.
   /// - parameter loopCount: Desired number of loops, <= 0 for infinite loop.
   /// - parameter completionHandler: Completion callback function
-  func prepareForAnimation(withGIFData imageData: Data, size: CGSize, contentMode: UIViewContentMode, loopCount: Int = 0, completionHandler: (() -> Void)? = nil) {
+  func prepareForAnimation(withGIFData imageData: Data, size: CGSize, contentMode: UIView.ContentMode, loopCount: Int = 0, completionHandler: (() -> Void)? = nil) {
     frameStore = FrameStore(data: imageData,
                             size: size,
                             contentMode: contentMode,
@@ -102,7 +102,7 @@ public class Animator {
 
   /// Add the display link to the main run loop.
   private func attachDisplayLink() {
-    displayLink.add(to: .main, forMode: RunLoopMode.commonModes)
+    displayLink.add(to: .main, forMode: RunLoop.Mode.common)
   }
 
   deinit {
@@ -130,7 +130,7 @@ public class Animator {
   /// - parameter contentMode: The view content mode to use for the individual frames.
   /// - parameter loopCount: Desired number of loops, <= 0 for infinite loop.
   /// - parameter completionHandler: Completion callback function
-  func animate(withGIFNamed imageName: String, size: CGSize, contentMode: UIViewContentMode, loopCount: Int = 0, completionHandler: (() -> Void)? = nil) {
+  func animate(withGIFNamed imageName: String, size: CGSize, contentMode: UIView.ContentMode, loopCount: Int = 0, completionHandler: (() -> Void)? = nil) {
     prepareForAnimation(withGIFNamed: imageName,
                         size: size,
                         contentMode: contentMode,
@@ -146,7 +146,7 @@ public class Animator {
   /// - parameter contentMode: The view content mode to use for the individual frames.
   /// - parameter loopCount: Desired number of loops, <= 0 for infinite loop.
   /// - parameter completionHandler: Completion callback function
-  func animate(withGIFData imageData: Data, size: CGSize, contentMode: UIViewContentMode, loopCount: Int = 0, completionHandler: (() -> Void)? = nil)  {
+  func animate(withGIFData imageData: Data, size: CGSize, contentMode: UIView.ContentMode, loopCount: Int = 0, completionHandler: (() -> Void)? = nil)  {
     prepareForAnimation(withGIFData: imageData,
                         size: size,
                         contentMode: contentMode,
diff --git a/Source/Classes/FrameStore.swift b/Source/Classes/FrameStore.swift
index 3941602..63eb187 100644
--- a/Source/Classes/FrameStore.swift
+++ b/Source/Classes/FrameStore.swift
@@ -26,7 +26,7 @@ class FrameStore {
   let size: CGSize
 
   /// The content mode to use when resizing.
-  let contentMode: UIViewContentMode
+  let contentMode: UIView.ContentMode
 
   /// Maximum number of frames to load at once
   let bufferFrameCount: Int
@@ -83,7 +83,7 @@ class FrameStore {
   ///
   /// - parameter data: The raw GIF image data.
   /// - parameter delegate: An `Animatable` delegate.
-  init(data: Data, size: CGSize, contentMode: UIViewContentMode, framePreloadCount: Int, loopCount: Int) {
+  init(data: Data, size: CGSize, contentMode: UIView.ContentMode, framePreloadCount: Int, loopCount: Int) {
     let options = [String(kCGImageSourceShouldCache): kCFBooleanFalse] as CFDictionary
     self.imageSource = CGImageSourceCreateWithData(data as CFData, options) ?? CGImageSourceCreateIncremental(options)
     self.size = size
diff --git a/Source/Classes/GIFAnimatable.swift b/Source/Classes/GIFAnimatable.swift
index f7349a1..e8e53e1 100644
--- a/Source/Classes/GIFAnimatable.swift
+++ b/Source/Classes/GIFAnimatable.swift
@@ -13,7 +13,7 @@ public protocol GIFAnimatable: class {
   var frame: CGRect { get set }
 
   /// Content mode used for resizing the frames.
-  var contentMode: UIViewContentMode { get set }
+  var contentMode: UIView.ContentMode { get set }
 }
 
 
diff --git a/Supporting Files/Info.plist b/Supporting Files/Info.plist
index 3b2492a..4d42ae0 100644
--- a/Supporting Files/Info.plist	
+++ b/Supporting Files/Info.plist	
@@ -19,7 +19,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>146</string>
+	<string>147</string>
 	<key>NSPrincipalClass</key>
 	<string></string>
 </dict>