diff --git a/Package.swift b/Package.swift
new file mode 100644
index 0000000..a4704a2
--- /dev/null
+++ b/Package.swift
@@ -0,0 +1,16 @@
+// swift-tools-version:5.0
+
+import PackageDescription
+
+let package = Package(name: "SwiftEventBus",
+                      platforms: [.macOS(.v10_10),
+                                  .iOS(.v8)],
+                      
+                      products: [.library(name: "SwiftEventBus",
+                                          targets: ["SwiftEventBus"])],
+                      
+                      targets: [.target(name: "SwiftEventBus",
+                                        path: "SwiftEventBus")],
+                      
+                      swiftLanguageVersions: [.v5]
+)
diff --git a/Sample/AppDelegate.swift b/Sample/AppDelegate.swift
index ea2bbb2..4c67c28 100644
--- a/Sample/AppDelegate.swift
+++ b/Sample/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]? = nil) -> Bool {
         // Override point for customization after application launch.
         self.subscribeToServices()
         
@@ -22,7 +22,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     }
     
     func subscribeToServices() {
-        LoginService.init()
+        let _ = LoginService.init()
         // todo - rest of the services
     }
 
diff --git a/Sample/ViewController.swift b/Sample/ViewController.swift
index 685528c..c43bf72 100644
--- a/Sample/ViewController.swift
+++ b/Sample/ViewController.swift
@@ -20,7 +20,7 @@ class ViewController: UIViewController {
         
         SwiftEventBus.onMainThread(self, name: "login") { result in
             
-            let p : Person = result.object as! Person
+            let p : Person = result?.object as! Person
             
             self.welcomeLabel.text = "Welcome \(p.name)"
             
diff --git a/SwiftEventBus.xcodeproj/project.pbxproj b/SwiftEventBus.xcodeproj/project.pbxproj
index 370eb06..9519281 100644
--- a/SwiftEventBus.xcodeproj/project.pbxproj
+++ b/SwiftEventBus.xcodeproj/project.pbxproj
@@ -169,10 +169,9 @@
 			};
 			buildConfigurationList = DBCE8D441D8DD5160012B477 /* Build configuration list for PBXProject "SwiftEventBus" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
-				English,
 				en,
 				Base,
 			);
@@ -306,6 +305,7 @@
 				SDKROOT = iphoneos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -361,6 +361,7 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -386,7 +387,6 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -407,7 +407,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = cesarferreira.SwiftEventBus;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -420,7 +419,6 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = cesarferreira.Sample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
 			};
 			name = Debug;
 		};
@@ -433,7 +431,6 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = cesarferreira.Sample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
 			};
 			name = Release;
 		};