diff --git a/.swift-version b/.swift-version
index cb2b00e..bf77d54 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-3.0.1
+4.2
diff --git a/.travis.yml b/.travis.yml
index e16e83b..aedff12 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-osx_image: xcode9.1
+osx_image: xcode10.0
 language: objective-c
 podfile: Example/Demo2-CreditCardFormLibarary/Podfile
 before_install:
diff --git a/CreditCardForm.podspec b/CreditCardForm.podspec
index 62a9426..1d42014 100644
--- a/CreditCardForm.podspec
+++ b/CreditCardForm.podspec
@@ -2,7 +2,7 @@
 Pod::Spec.new do |s|
 
   s.name         = "CreditCardForm"
-  s.version      = "0.1.8"
+  s.version      = "0.1.9"
   s.summary      = "CreditCardForm is iOS framework"
 
   s.description  = "CreditCardForm is iOS framework that allows developers to create the UI which replicates an actual Credit Card"
diff --git a/CreditCardForm.xcodeproj/project.pbxproj b/CreditCardForm.xcodeproj/project.pbxproj
index 9e9e849..ae3ed54 100644
--- a/CreditCardForm.xcodeproj/project.pbxproj
+++ b/CreditCardForm.xcodeproj/project.pbxproj
@@ -213,7 +213,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0820;
-				LastUpgradeCheck = 0910;
+				LastUpgradeCheck = 1000;
 				ORGANIZATIONNAME = Veriloft;
 				TargetAttributes = {
 					8EC8C3C81DEC8C3E0044FB44 = {
@@ -366,6 +366,7 @@
 				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;
@@ -373,6 +374,7 @@
 				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;
@@ -406,6 +408,7 @@
 				SDKROOT = iphoneos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -425,6 +428,7 @@
 				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;
@@ -432,6 +436,7 @@
 				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;
@@ -457,6 +462,7 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -483,7 +489,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -505,7 +511,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.orazz.CreditCardForm;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -518,7 +524,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.orazz.CreditCardFormTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -531,7 +537,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.orazz.CreditCardFormTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
diff --git a/CreditCardForm.xcodeproj/project.xcworkspace/xcuserdata/atakishiyev.xcuserdatad/UserInterfaceState.xcuserstate b/CreditCardForm.xcodeproj/project.xcworkspace/xcuserdata/atakishiyev.xcuserdatad/UserInterfaceState.xcuserstate
index d3fd7b4..28bae64 100644
Binary files a/CreditCardForm.xcodeproj/project.xcworkspace/xcuserdata/atakishiyev.xcuserdatad/UserInterfaceState.xcuserstate and b/CreditCardForm.xcodeproj/project.xcworkspace/xcuserdata/atakishiyev.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/CreditCardForm.xcodeproj/xcshareddata/xcschemes/CreditCardForm.xcscheme b/CreditCardForm.xcodeproj/xcshareddata/xcschemes/CreditCardForm.xcscheme
index e318f45..1993b81 100644
--- a/CreditCardForm.xcodeproj/xcshareddata/xcschemes/CreditCardForm.xcscheme
+++ b/CreditCardForm.xcodeproj/xcshareddata/xcschemes/CreditCardForm.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0910"
+   LastUpgradeVersion = "1000"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,7 +26,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
@@ -56,7 +55,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"
diff --git a/CreditCardForm/Classes/AKMaskField.swift b/CreditCardForm/Classes/AKMaskField.swift
index 0c43d7c..ff470af 100644
--- a/CreditCardForm/Classes/AKMaskField.swift
+++ b/CreditCardForm/Classes/AKMaskField.swift
@@ -646,9 +646,9 @@ extension AKMaskField: UITextFieldDelegate {
         print("   index           : \(char.index)")
         print("   blockIndex      : \(char.blockIndex)")
         print("   status          : \(char.status)")
-        print("   pattern         : \(char.pattern)")
+        print("   pattern         : \(String(describing: char.pattern))")
         print("   patternRange    : \(char.patternRange)")
-        print("   template        : \(char.template)")
+        print("   template        : \(String(describing: char.template))")
         print("   templateRange   : \(char.templateRange)")
       }
       print("")
diff --git a/CreditCardForm/Classes/CreditCardFormView.swift b/CreditCardForm/Classes/CreditCardFormView.swift
index 66beddf..152d9b1 100644
--- a/CreditCardForm/Classes/CreditCardFormView.swift
+++ b/CreditCardForm/Classes/CreditCardFormView.swift
@@ -169,76 +169,76 @@ public class CreditCardFormView : UIView {
         cardView.backgroundColor = .clear
         self.addSubview(cardView)
         //CardView
-        self.addConstraint(NSLayoutConstraint(item: cardView, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: cardView, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: cardView, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: cardView, attribute: NSLayoutConstraint.Attribute.centerX, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.centerX, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: cardView, attribute: NSLayoutAttribute.width, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.width, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: cardView, attribute: NSLayoutConstraint.Attribute.width, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.width, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: cardView, attribute: NSLayoutAttribute.height, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.height, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: cardView, attribute: NSLayoutConstraint.Attribute.height, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.height, multiplier: 1.0, constant: 0.0));
     }
     
     private func createBackView() {
         backView.translatesAutoresizingMaskIntoConstraints = false
         backView.layer.cornerRadius = 6
         backView.center = CGPoint(x: self.bounds.midX, y: self.bounds.midY)
-        backView.autoresizingMask = [UIViewAutoresizing.flexibleLeftMargin, UIViewAutoresizing.flexibleRightMargin, UIViewAutoresizing.flexibleTopMargin, UIViewAutoresizing.flexibleBottomMargin]
+        backView.autoresizingMask = [UIView.AutoresizingMask.flexibleLeftMargin, UIView.AutoresizingMask.flexibleRightMargin, UIView.AutoresizingMask.flexibleTopMargin, UIView.AutoresizingMask.flexibleBottomMargin]
         cardView.addSubview(backView)
         
-        self.addConstraint(NSLayoutConstraint(item: backView, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: backView, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: backView, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: backView, attribute: NSLayoutConstraint.Attribute.centerX, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.centerX, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: backView, attribute: NSLayoutAttribute.width, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.width, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: backView, attribute: NSLayoutConstraint.Attribute.width, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.width, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: backView, attribute: NSLayoutAttribute.height, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.height, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: backView, attribute: NSLayoutConstraint.Attribute.height, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.height, multiplier: 1.0, constant: 0.0));
     }
     
     private func createFrontView() {
         frontView.translatesAutoresizingMaskIntoConstraints = false
         frontView.layer.cornerRadius = 6
         frontView.center = CGPoint(x: self.bounds.midX, y: self.bounds.midY)
-        frontView.autoresizingMask = [UIViewAutoresizing.flexibleLeftMargin, UIViewAutoresizing.flexibleRightMargin, UIViewAutoresizing.flexibleTopMargin, UIViewAutoresizing.flexibleBottomMargin]
+        frontView.autoresizingMask = [UIView.AutoresizingMask.flexibleLeftMargin, UIView.AutoresizingMask.flexibleRightMargin, UIView.AutoresizingMask.flexibleTopMargin, UIView.AutoresizingMask.flexibleBottomMargin]
         cardView.addSubview(frontView)
         setGradientBackground(v: frontView, top: defaultCardColor.cgColor, bottom: defaultCardColor.cgColor)
         
-        self.addConstraint(NSLayoutConstraint(item: frontView, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: frontView, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: frontView, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: frontView, attribute: NSLayoutConstraint.Attribute.centerX, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.centerX, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: frontView, attribute: NSLayoutAttribute.width, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.width, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: frontView, attribute: NSLayoutConstraint.Attribute.width, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.width, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: frontView, attribute: NSLayoutAttribute.height, relatedBy: NSLayoutRelation.equal, toItem: self, attribute: NSLayoutAttribute.height, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: frontView, attribute: NSLayoutConstraint.Attribute.height, relatedBy: NSLayoutConstraint.Relation.equal, toItem: self, attribute: NSLayoutConstraint.Attribute.height, multiplier: 1.0, constant: 0.0));
     }
     
     private func createbackImage() {
         backImage.translatesAutoresizingMaskIntoConstraints = false
         backImage.image = UIImage(named: "back.jpg")
-        backImage.contentMode = UIViewContentMode.scaleAspectFill
+        backImage.contentMode = UIView.ContentMode.scaleAspectFill
         frontView.addSubview(backImage)
         
-        self.addConstraint(NSLayoutConstraint(item: backImage, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: backImage, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: backImage, attribute: NSLayoutAttribute.leading, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.leading, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: backImage, attribute: NSLayoutConstraint.Attribute.leading, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.leading, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: backImage, attribute: NSLayoutAttribute.trailing, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.trailing, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: backImage, attribute: NSLayoutConstraint.Attribute.trailing, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.trailing, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: backImage, attribute: NSLayoutAttribute.bottom, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.bottom, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: backImage, attribute: NSLayoutConstraint.Attribute.bottom, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.bottom, multiplier: 1.0, constant: 0.0));
     }
     
     private func createBrandImageView() {
         //Card brand image
         brandImageView.translatesAutoresizingMaskIntoConstraints = false
-        brandImageView.contentMode = UIViewContentMode.scaleAspectFit
+        brandImageView.contentMode = UIView.ContentMode.scaleAspectFit
         frontView.addSubview(brandImageView)
         
-        self.addConstraint(NSLayoutConstraint(item: brandImageView, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: 10));
+        self.addConstraint(NSLayoutConstraint(item: brandImageView, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: 10));
         
-        self.addConstraint(NSLayoutConstraint(item: brandImageView, attribute: NSLayoutAttribute.trailing, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.trailing, multiplier: 1.0, constant: -10));
+        self.addConstraint(NSLayoutConstraint(item: brandImageView, attribute: NSLayoutConstraint.Attribute.trailing, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.trailing, multiplier: 1.0, constant: -10));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==60)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": brandImageView]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==60)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": brandImageView]));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==40)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": brandImageView]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==40)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": brandImageView]));
     }
     
     private func createCardNumber() {
@@ -252,13 +252,13 @@ public class CreditCardFormView : UIView {
         cardNumber.font = UIFont(name: "Helvetica Neue", size: cardNumberFontSize)
         frontView.addSubview(cardNumber)
         
-        self.addConstraint(NSLayoutConstraint(item: cardNumber, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: cardNumber, attribute: NSLayoutConstraint.Attribute.centerX, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.centerX, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraint(NSLayoutConstraint(item: cardNumber, attribute: NSLayoutAttribute.centerY, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.centerY, multiplier: 1.0, constant: 0.0));
+        self.addConstraint(NSLayoutConstraint(item: cardNumber, attribute: NSLayoutConstraint.Attribute.centerY, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.centerY, multiplier: 1.0, constant: 0.0));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==200)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": cardNumber]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==200)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": cardNumber]));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==30)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": cardNumber]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==30)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": cardNumber]));
     }
     
     private func createCardHolder() {
@@ -269,9 +269,9 @@ public class CreditCardFormView : UIView {
         cardHolder.text = cardHolderString
         frontView.addSubview(cardHolder)
         
-        self.addConstraint(NSLayoutConstraint(item: cardHolder, attribute: NSLayoutAttribute.bottom, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.bottom, multiplier: 1.0, constant: -20));
+        self.addConstraint(NSLayoutConstraint(item: cardHolder, attribute: NSLayoutConstraint.Attribute.bottom, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.bottom, multiplier: 1.0, constant: -20));
         
-        self.addConstraint(NSLayoutConstraint(item: cardHolder, attribute: NSLayoutAttribute.leading, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.leading, multiplier: 1.0, constant: 15));
+        self.addConstraint(NSLayoutConstraint(item: cardHolder, attribute: NSLayoutConstraint.Attribute.leading, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.leading, multiplier: 1.0, constant: 15));
     }
     
     private func createCardHolderText() {
@@ -282,9 +282,9 @@ public class CreditCardFormView : UIView {
         cardHolderText.textColor = cardHolderExpireDateTextColor
         frontView.addSubview(cardHolderText)
         
-        self.addConstraint(NSLayoutConstraint(item: cardHolderText, attribute: NSLayoutAttribute.bottom, relatedBy: NSLayoutRelation.equal, toItem: cardHolder, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: -3));
+        self.addConstraint(NSLayoutConstraint(item: cardHolderText, attribute: NSLayoutConstraint.Attribute.bottom, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardHolder, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: -3));
         
-        self.addConstraint(NSLayoutConstraint(item: cardHolderText, attribute: NSLayoutAttribute.leading, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.leading, multiplier: 1.0, constant: 15));
+        self.addConstraint(NSLayoutConstraint(item: cardHolderText, attribute: NSLayoutConstraint.Attribute.leading, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.leading, multiplier: 1.0, constant: 15));
     }
     
     private func createExpireDate() {
@@ -297,9 +297,9 @@ public class CreditCardFormView : UIView {
         expireDate.textColor = cardHolderExpireDateColor
         frontView.addSubview(expireDate)
         
-        self.addConstraint(NSLayoutConstraint(item: expireDate, attribute: NSLayoutAttribute.bottom, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.bottom, multiplier: 1.0, constant: -20));
+        self.addConstraint(NSLayoutConstraint(item: expireDate, attribute: NSLayoutConstraint.Attribute.bottom, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.bottom, multiplier: 1.0, constant: -20));
         
-        self.addConstraint(NSLayoutConstraint(item: expireDate, attribute: NSLayoutAttribute.trailing, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.trailing, multiplier: 1.0, constant: -55));
+        self.addConstraint(NSLayoutConstraint(item: expireDate, attribute: NSLayoutConstraint.Attribute.trailing, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.trailing, multiplier: 1.0, constant: -55));
     }
     
     private func createExpireDateText() {
@@ -310,9 +310,9 @@ public class CreditCardFormView : UIView {
         expireDateText.textColor = cardHolderExpireDateTextColor
         frontView.addSubview(expireDateText)
         
-        self.addConstraint(NSLayoutConstraint(item: expireDateText, attribute: NSLayoutAttribute.bottom, relatedBy: NSLayoutRelation.equal, toItem: expireDate, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: -3));
+        self.addConstraint(NSLayoutConstraint(item: expireDateText, attribute: NSLayoutConstraint.Attribute.bottom, relatedBy: NSLayoutConstraint.Relation.equal, toItem: expireDate, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: -3));
         
-        self.addConstraint(NSLayoutConstraint(item: expireDateText, attribute: NSLayoutAttribute.trailing, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.trailing, multiplier: 1.0, constant: -58));
+        self.addConstraint(NSLayoutConstraint(item: expireDateText, attribute: NSLayoutConstraint.Attribute.trailing, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.trailing, multiplier: 1.0, constant: -58));
     }
     
     private func createChipImage() {
@@ -322,13 +322,13 @@ public class CreditCardFormView : UIView {
         chipImg.image = chipImage
         frontView.addSubview(chipImg)
         
-        self.addConstraint(NSLayoutConstraint(item: chipImg, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: 15));
+        self.addConstraint(NSLayoutConstraint(item: chipImg, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: 15));
         
-        self.addConstraint(NSLayoutConstraint(item: chipImg, attribute: NSLayoutAttribute.leading, relatedBy: NSLayoutRelation.equal, toItem: cardView, attribute: NSLayoutAttribute.leading, multiplier: 1.0, constant: 15));
+        self.addConstraint(NSLayoutConstraint(item: chipImg, attribute: NSLayoutConstraint.Attribute.leading, relatedBy: NSLayoutConstraint.Relation.equal, toItem: cardView, attribute: NSLayoutConstraint.Attribute.leading, multiplier: 1.0, constant: 15));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==45)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": chipImg]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==45)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": chipImg]));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==30)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": chipImg]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==30)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": chipImg]));
     }
     
     private func createBackLine() {
@@ -337,13 +337,13 @@ public class CreditCardFormView : UIView {
         backLine.backgroundColor = backLineColor
         backView.addSubview(backLine)
         
-        self.addConstraint(NSLayoutConstraint(item: backLine, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: backView, attribute: NSLayoutAttribute.top, multiplier: 1.0, constant: 20));
+        self.addConstraint(NSLayoutConstraint(item: backLine, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: backView, attribute: NSLayoutConstraint.Attribute.top, multiplier: 1.0, constant: 20));
         
-        self.addConstraint(NSLayoutConstraint(item: backLine, attribute: NSLayoutAttribute.centerX, relatedBy: NSLayoutRelation.equal, toItem: backView, attribute: NSLayoutAttribute.centerX, multiplier: 1.0, constant: 0));
+        self.addConstraint(NSLayoutConstraint(item: backLine, attribute: NSLayoutConstraint.Attribute.centerX, relatedBy: NSLayoutConstraint.Relation.equal, toItem: backView, attribute: NSLayoutConstraint.Attribute.centerX, multiplier: 1.0, constant: 0));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==300)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": backLine]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==300)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": backLine]));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==50)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": backLine]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==50)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": backLine]));
     }
     
     private func createCVC() {
@@ -356,13 +356,13 @@ public class CreditCardFormView : UIView {
         cvc.isUserInteractionEnabled = false
         backView.addSubview(cvc)
         
-        self.addConstraint(NSLayoutConstraint(item: cvc, attribute: NSLayoutAttribute.top, relatedBy: NSLayoutRelation.equal, toItem: backLine, attribute: NSLayoutAttribute.bottom, multiplier: 1.0, constant: 10));
+        self.addConstraint(NSLayoutConstraint(item: cvc, attribute: NSLayoutConstraint.Attribute.top, relatedBy: NSLayoutConstraint.Relation.equal, toItem: backLine, attribute: NSLayoutConstraint.Attribute.bottom, multiplier: 1.0, constant: 10));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==50)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": cvc]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[view(==50)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": cvc]));
         
-        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==25)]", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["view": cvc]));
+        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:[view(==25)]", options: NSLayoutConstraint.FormatOptions(rawValue: 0), metrics: nil, views: ["view": cvc]));
         
-        self.addConstraint(NSLayoutConstraint(item: cvc, attribute: NSLayoutAttribute.trailing, relatedBy: NSLayoutRelation.equal, toItem: backView, attribute: NSLayoutAttribute.trailing, multiplier: 1.0, constant: -10));
+        self.addConstraint(NSLayoutConstraint(item: cvc, attribute: NSLayoutConstraint.Attribute.trailing, relatedBy: NSLayoutConstraint.Relation.equal, toItem: backView, attribute: NSLayoutConstraint.Attribute.trailing, multiplier: 1.0, constant: -10));
     }
     
     private func setType(colors: [UIColor], alpha: CGFloat, back: UIColor) {
@@ -383,7 +383,7 @@ public class CreditCardFormView : UIView {
         UIView.transition(from:showingSide,
                           to: hiddenSide,
                           duration: 0.7,
-                          options: [UIViewAnimationOptions.transitionFlipFromRight, UIViewAnimationOptions.showHideTransitionViews],
+                          options: [UIView.AnimationOptions.transitionFlipFromRight, UIView.AnimationOptions.showHideTransitionViews],
                           completion: nil)
     }