diff --git a/.travis.yml b/.travis.yml
index 286afc1..650223a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 
 language: swift
-osx_image: xcode9.4
-xcode_sdk: iphonesimulator11.4
+osx_image: xcode10.1
+xcode_sdk: iphonesimulator12.0
 script:
-- xcodebuild clean build test -project Trekker.xcodeproj -scheme Trekker -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 8,OS=11.4'
+- xcodebuild clean build test -project Trekker.xcodeproj -scheme Trekker -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 8,OS=12.0'
diff --git a/Example/AppDelegate.swift b/Example/AppDelegate.swift
index 8659973..3b574df 100644
--- a/Example/AppDelegate.swift
+++ b/Example/AppDelegate.swift
@@ -16,7 +16,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
     //MARK: - Application states
 
-    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.
         
         //let mixpanel = MixpanelService(token: "002b0dd7f191c2cdeee19893e12572fe")
diff --git a/Trekker.xcodeproj/project.pbxproj b/Trekker.xcodeproj/project.pbxproj
index edd23de..066d2c3 100644
--- a/Trekker.xcodeproj/project.pbxproj
+++ b/Trekker.xcodeproj/project.pbxproj
@@ -558,7 +558,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "co.awkward.trekker-example";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -573,7 +573,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "co.awkward.trekker-example";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -597,7 +597,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -622,7 +622,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = co.awkward.trekker;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -635,7 +635,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "co.awkward.trekker-tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -646,7 +646,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "co.awkward.trekker-tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
diff --git a/Trekker.xcodeproj/xcshareddata/xcschemes/Trekker.xcscheme b/Trekker.xcodeproj/xcshareddata/xcschemes/Trekker.xcscheme
index 23661a7..dd10db2 100644
--- a/Trekker.xcodeproj/xcshareddata/xcschemes/Trekker.xcscheme
+++ b/Trekker.xcodeproj/xcshareddata/xcschemes/Trekker.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0940"
+   LastUpgradeVersion = "1010"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Trekker.xcodeproj/xcshareddata/xcschemes/TrekkerExample.xcscheme b/Trekker.xcodeproj/xcshareddata/xcschemes/TrekkerExample.xcscheme
index 9cdfa93..a5fdf1c 100644
--- a/Trekker.xcodeproj/xcshareddata/xcschemes/TrekkerExample.xcscheme
+++ b/Trekker.xcodeproj/xcshareddata/xcschemes/TrekkerExample.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0940"
+   LastUpgradeVersion = "1010"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Trekker/Trekker.swift b/Trekker/Trekker.swift
index 8c16943..da51833 100644
--- a/Trekker/Trekker.swift
+++ b/Trekker/Trekker.swift
@@ -66,9 +66,9 @@ public final class Trekker: NSObject {
         
         if self.automaticStateUpdatingEnabled {
             self.start()
-            NotificationCenter.default.addObserver(self, selector: #selector(Trekker.pauseTracking(_:)), name: Notification.Name.UIApplicationDidEnterBackground, object: nil)
-            NotificationCenter.default.addObserver(self, selector: #selector(Trekker.resumeTracking(_:)), name: Notification.Name.UIApplicationDidBecomeActive, object: nil)
-            NotificationCenter.default.addObserver(self, selector: #selector(Trekker.endTracking(_:)), name: Notification.Name.UIApplicationWillTerminate, object: nil)
+            NotificationCenter.default.addObserver(self, selector: #selector(Trekker.pauseTracking(_:)), name: UIApplication.didEnterBackgroundNotification, object: nil)
+            NotificationCenter.default.addObserver(self, selector: #selector(Trekker.resumeTracking(_:)), name: UIApplication.didBecomeActiveNotification, object: nil)
+            NotificationCenter.default.addObserver(self, selector: #selector(Trekker.endTracking(_:)), name: UIApplication.willTerminateNotification, object: nil)
         }
     }
     
@@ -299,7 +299,7 @@ extension Trekker {
     /// But can contain more information in the `customProperties` property. Any nil items in the User profile should be removed, so be sure to always fill the user profile.
     ///
     /// - Parameter profile: The profile to identify the user with.
-    open func identify(using profile: TrekkerUserProfile) {
+    public func identify(using profile: TrekkerUserProfile) {
         self.servicesForUserProfiles.forEach { (service) in
             service.identify(using: profile)
         }
diff --git a/Trekker/TrekkerEvent.swift b/Trekker/TrekkerEvent.swift
index f9c5306..c0c823a 100644
--- a/Trekker/TrekkerEvent.swift
+++ b/Trekker/TrekkerEvent.swift
@@ -14,10 +14,10 @@ import Foundation
 open class TrekkerEvent: NSObject {
     
     /// The name of the event, alphanumeric characters, dashes and spaces are allowed.
-    open let eventName: String
+    let eventName: String
     
     /// The properties to send with the event
-    open let properties: [String: Any]?
+    let properties: [String: Any]?
     
     /// Creates an event with the given name and properties.
     ///