diff --git a/PMSuperButton.xcodeproj/project.pbxproj b/PMSuperButton.xcodeproj/project.pbxproj
index f4716c3..0f08ef4 100644
--- a/PMSuperButton.xcodeproj/project.pbxproj
+++ b/PMSuperButton.xcodeproj/project.pbxproj
@@ -233,12 +233,12 @@
 				TargetAttributes = {
 					454FFF5F1EF1927A00F1C34C = {
 						CreatedOnToolsVersion = 8.3.2;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Automatic;
 					};
 					52D6D97B1BEFF229002C0205 = {
 						CreatedOnToolsVersion = 7.1;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1000;
 					};
 					52D6D9851BEFF229002C0205 = {
 						CreatedOnToolsVersion = 7.1;
@@ -367,8 +367,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.codeido.PMSuperButtonSample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -385,8 +384,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.codeido.PMSuperButtonSample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -522,8 +520,7 @@
 				PRODUCT_NAME = PMSuperButton;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -545,8 +542,7 @@
 				PRODUCT_NAME = PMSuperButton;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
diff --git a/PMSuperButtonSample/AppDelegate.swift b/PMSuperButtonSample/AppDelegate.swift
index 865566b..ea12c77 100644
--- a/PMSuperButtonSample/AppDelegate.swift
+++ b/PMSuperButtonSample/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/Sources/PMSuperButton.swift b/Sources/PMSuperButton.swift
index c0756e1..b4371cb 100644
--- a/Sources/PMSuperButton.swift
+++ b/Sources/PMSuperButton.swift
@@ -163,9 +163,9 @@ open class PMSuperButton: UIButton {
     
     //MARK: - Image
     ///Image UIButton content mode
-    @IBInspectable open var imageViewContentMode: Int = UIViewContentMode.scaleToFill.rawValue{
+    @IBInspectable open var imageViewContentMode: Int = UIView.ContentMode.scaleToFill.rawValue{
         didSet{
-            imageView?.contentMode = UIViewContentMode(rawValue: imageViewContentMode) ?? .scaleToFill
+            imageView?.contentMode = UIView.ContentMode(rawValue: imageViewContentMode) ?? .scaleToFill
         }
     }
     @IBInspectable open var imageAlpha: CGFloat = 1.0 {
@@ -188,7 +188,7 @@ open class PMSuperButton: UIButton {
     }
     
     //MARK: - Loading
-    let indicator: UIActivityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.gray)
+    let indicator: UIActivityIndicatorView = UIActivityIndicatorView(style: UIActivityIndicatorView.Style.gray)
     public var isLoading: Bool = false
     
     /**
@@ -271,7 +271,7 @@ extension PMSuperButton: CAAnimationDelegate{
         
         // Set animation to be consistent on completion
         animation.isRemovedOnCompletion = false
-        animation.fillMode = kCAFillModeForwards
+        animation.fillMode = CAMediaTimingFillMode.forwards
         
         // Add animation to the view's layer
         let fade = CAKeyframeAnimation(keyPath: "opacity")