diff --git a/CoreStoreDemo/CoreStoreDemo/Fetching and Querying Demo/FetchingAndQueryingDemoViewController.swift b/CoreStoreDemo/CoreStoreDemo/Fetching and Querying Demo/FetchingAndQueryingDemoViewController.swift
index 719e509..f680a42 100644
--- a/CoreStoreDemo/CoreStoreDemo/Fetching and Querying Demo/FetchingAndQueryingDemoViewController.swift	
+++ b/CoreStoreDemo/CoreStoreDemo/Fetching and Querying Demo/FetchingAndQueryingDemoViewController.swift	
@@ -286,7 +286,7 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
     @IBOutlet dynamic weak var segmentedControl: UISegmentedControl?
     @IBOutlet dynamic weak var tableView: UITableView?
     
-    @IBAction dynamic func segmentedControlValueChanged(sender: AnyObject?) {
+    @IBAction dynamic func segmentedControlValueChanged(_ sender: AnyObject?) {
         
         self.tableView?.reloadData()
     }
diff --git a/CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/ObjectObserverDemoViewController.swift b/CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/ObjectObserverDemoViewController.swift
index afc827b..e806042 100644
--- a/CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/ObjectObserverDemoViewController.swift	
+++ b/CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/ObjectObserverDemoViewController.swift	
@@ -118,7 +118,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
     @IBOutlet weak var saturationSlider: UISlider?
     @IBOutlet weak var brightnessSlider: UISlider?
     
-    @IBAction dynamic func hueSliderValueDidChange(sender: AnyObject?) {
+    @IBAction dynamic func hueSliderValueDidChange(_ sender: AnyObject?) {
         
         let hue = self.hueSlider?.value ?? 0
         CoreStore.beginAsynchronous { [weak self] (transaction) -> Void in
@@ -131,7 +131,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
         }
     }
     
-    @IBAction dynamic func saturationSliderValueDidChange(sender: AnyObject?) {
+    @IBAction dynamic func saturationSliderValueDidChange(_ sender: AnyObject?) {
         
         let saturation = self.saturationSlider?.value ?? 0
         CoreStore.beginAsynchronous { [weak self] (transaction) -> Void in
@@ -144,7 +144,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
         }
     }
     
-    @IBAction dynamic func brightnessSliderValueDidChange(sender: AnyObject?) {
+    @IBAction dynamic func brightnessSliderValueDidChange(_ sender: AnyObject?) {
         
         let brightness = self.brightnessSlider?.value ?? 0
         CoreStore.beginAsynchronous { [weak self] (transaction) -> Void in
@@ -157,7 +157,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
         }
     }
     
-    @IBAction dynamic func deleteBarButtonTapped(sender: AnyObject?) {
+    @IBAction dynamic func deleteBarButtonTapped(_ sender: AnyObject?) {
         
         CoreStore.beginAsynchronous { [weak self] (transaction) -> Void in
             
diff --git a/CoreStoreDemo/CoreStoreDemo/Loggers Demo/CustomLoggerViewController.swift b/CoreStoreDemo/CoreStoreDemo/Loggers Demo/CustomLoggerViewController.swift
index c1dbe65..8f10fdc 100644
--- a/CoreStoreDemo/CoreStoreDemo/Loggers Demo/CustomLoggerViewController.swift	
+++ b/CoreStoreDemo/CoreStoreDemo/Loggers Demo/CustomLoggerViewController.swift	
@@ -94,7 +94,7 @@ class CustomLoggerViewController: UIViewController, CoreStoreLogger {
     @IBOutlet dynamic weak var textView: UITextView?
     @IBOutlet dynamic weak var segmentedControl: UISegmentedControl?
     
-    @IBAction dynamic func segmentedControlValueChanged(sender: AnyObject?) {
+    @IBAction dynamic func segmentedControlValueChanged(_ sender: AnyObject?) {
         
         switch self.segmentedControl?.selectedSegmentIndex {
             
diff --git a/CoreStoreDemo/CoreStoreDemo/MIgrations Demo/OrganismTableViewCell.swift b/CoreStoreDemo/CoreStoreDemo/MIgrations Demo/OrganismTableViewCell.swift
index 285d057..94996b0 100644
--- a/CoreStoreDemo/CoreStoreDemo/MIgrations Demo/OrganismTableViewCell.swift	
+++ b/CoreStoreDemo/CoreStoreDemo/MIgrations Demo/OrganismTableViewCell.swift	
@@ -15,7 +15,7 @@ class OrganismTableViewCell: UITableViewCell {
     
     var mutateButtonHandler: (() -> Void)?
 
-    @IBAction dynamic func mutateButtonTouchUpInside(sender: UIButton?) {
+    @IBAction dynamic func mutateButtonTouchUpInside(_ sender: UIButton?) {
      
         self.mutateButtonHandler?()
     }