diff --git a/Cartfile b/Cartfile
index f8a4c2f..8297d9c 100644
--- a/Cartfile
+++ b/Cartfile
@@ -1 +1 @@
-github "yuzushioh/CryptoEthereumSwift" ~> 1.0.0
+github "yuzushioh/CryptoEthereumSwift"
diff --git a/Cartfile.resolved b/Cartfile.resolved
index 276dec6..8b08fc5 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1,2 +1,2 @@
-github "krzyzanowskim/CryptoSwift" "0.10.0"
-github "yuzushioh/CryptoEthereumSwift" "1.0.1"
+github "krzyzanowskim/CryptoSwift" "0.11.0"
+github "yuzushioh/CryptoEthereumSwift" "2.0.0"
diff --git a/EthereumKit.xcodeproj/project.pbxproj b/EthereumKit.xcodeproj/project.pbxproj
index 614d6aa..d76910b 100644
--- a/EthereumKit.xcodeproj/project.pbxproj
+++ b/EthereumKit.xcodeproj/project.pbxproj
@@ -547,16 +547,18 @@
 				TargetAttributes = {
 					AE90A0741FFA698D005ED7AF = {
 						CreatedOnToolsVersion = 9.2;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Automatic;
 						TestTargetID = AEBA90EF1FFA2C6A003EA2BA;
 					};
 					AEBA90D41FFA21ED003EA2BA = {
 						CreatedOnToolsVersion = 9.2;
-						LastSwiftMigration = 0920;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Manual;
 					};
 					AEBA90EF1FFA2C6A003EA2BA = {
 						CreatedOnToolsVersion = 9.2;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Manual;
 					};
 				};
@@ -772,7 +774,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = yuzushioh.EthereumKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Example.app/Example";
 			};
@@ -793,7 +795,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = yuzushioh.EthereumKitTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Example.app/Example";
 			};
@@ -948,7 +950,7 @@
 				SWIFT_INCLUDE_PATHS = "";
 				SWIFT_OBJC_BRIDGING_HEADER = "";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALID_ARCHS = "arm64 armv7 armv7s";
 			};
@@ -979,7 +981,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_INCLUDE_PATHS = "";
 				SWIFT_OBJC_BRIDGING_HEADER = "";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALID_ARCHS = "arm64 armv7 armv7s";
 			};
@@ -1003,7 +1005,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = yuzushioh.Example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -1026,7 +1028,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = yuzushioh.Example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;
diff --git a/Example/AppDelegate.swift b/Example/AppDelegate.swift
index 296456d..f82a8c2 100644
--- a/Example/AppDelegate.swift
+++ b/Example/AppDelegate.swift
@@ -13,8 +13,7 @@ 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
     }
@@ -41,6 +40,4 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
     }
 
-
 }
-