diff --git a/Example.xcodeproj/project.pbxproj b/Example.xcodeproj/project.pbxproj
index 9b08d041..7d3ff3cf 100644
--- a/Example.xcodeproj/project.pbxproj
+++ b/Example.xcodeproj/project.pbxproj
@@ -181,9 +181,11 @@
 				TargetAttributes = {
 					D2515E6E1BC1A47F00ED606F = {
 						CreatedOnToolsVersion = 7.0.1;
+						LastSwiftMigration = 0800;
 					};
 					D2C0AFCC1BE7236A00F31D0F = {
 						CreatedOnToolsVersion = 7.1;
+						LastSwiftMigration = 0800;
 						TestTargetID = D2515E6E1BC1A47F00ED606F;
 					};
 				};
@@ -385,6 +387,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -401,6 +404,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ScottyDoesntCode.Example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;
@@ -413,6 +417,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.ScottyDoesntCode.SDCAlertView-UI-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 				TEST_TARGET_NAME = Example;
 				USES_XCTRUNNER = YES;
 			};
@@ -426,6 +431,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.ScottyDoesntCode.SDCAlertView-UI-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 				TEST_TARGET_NAME = Example;
 				USES_XCTRUNNER = YES;
 			};
diff --git a/SDCAlertView.xcodeproj/project.pbxproj b/SDCAlertView.xcodeproj/project.pbxproj
index c33937be..1dc5cbd7 100644
--- a/SDCAlertView.xcodeproj/project.pbxproj
+++ b/SDCAlertView.xcodeproj/project.pbxproj
@@ -208,6 +208,7 @@
 				TargetAttributes = {
 					D2515EC01BC1A7D500ED606F = {
 						CreatedOnToolsVersion = 7.0.1;
+						LastSwiftMigration = 0800;
 					};
 				};
 			};
@@ -295,6 +296,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -323,6 +325,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ScottyDoesntCode.SDCAlertView;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
diff --git a/Source/Presentation/AnimationController.swift b/Source/Presentation/AnimationController.swift
index 5c0cffe9..028cdf77 100644
--- a/Source/Presentation/AnimationController.swift
+++ b/Source/Presentation/AnimationController.swift
@@ -25,7 +25,7 @@ class AnimationController: NSObject, UIViewControllerAnimatedTransitioning {
         }
 
         if self.isPresentation {
-            transitionContext.containerView()?.addSubview(toView)
+            transitionContext.containerView().addSubview(toView)
         }
 
         let animatingController = self.isPresentation ? toController : fromController
diff --git a/Source/Presentation/PresentationController.swift b/Source/Presentation/PresentationController.swift
index 9f576a0d..161720f4 100644
--- a/Source/Presentation/PresentationController.swift
+++ b/Source/Presentation/PresentationController.swift
@@ -4,7 +4,7 @@ class PresentationController: UIPresentationController {
 
     private let dimmingView = UIView()
 
-    override init(presentedViewController: UIViewController, presentingViewController: UIViewController) {
+    override init(presentedViewController: UIViewController, presentingViewController: UIViewController?) {
         super.init(presentedViewController: presentedViewController,
             presentingViewController: presentingViewController)
         self.dimmingView.backgroundColor = UIColor(white: 0, alpha: 0.4)
diff --git a/Source/Presentation/Transition.swift b/Source/Presentation/Transition.swift
index 31ad8882..af1df4d6 100644
--- a/Source/Presentation/Transition.swift
+++ b/Source/Presentation/Transition.swift
@@ -9,7 +9,7 @@ class Transition: NSObject, UIViewControllerTransitioningDelegate {
     }
 
     func presentationControllerForPresentedViewController(presented: UIViewController,
-        presentingViewController presenting: UIViewController, sourceViewController source: UIViewController)
+        presentingViewController presenting: UIViewController?, sourceViewController source: UIViewController)
         -> UIPresentationController?
     {
         return PresentationController(presentedViewController: presented,
diff --git a/Source/Views/ActionSheetView.swift b/Source/Views/ActionSheetView.swift
index fbb81583..891dbb41 100644
--- a/Source/Views/ActionSheetView.swift
+++ b/Source/Views/ActionSheetView.swift
@@ -83,13 +83,13 @@ private extension UIImage {
 
         UIGraphicsBeginImageContextWithOptions(rect.size, false, 0)
 
-        let context = UIGraphicsGetCurrentContext()
+        let context = UIGraphicsGetCurrentContext()!
         color.setFill()
         CGContextFillRect(context, rect)
 
-        let image = UIGraphicsGetImageFromCurrentImageContext()
+        let image = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
 
-        return image;
+        return image
     }
 }
diff --git a/Source/Views/AlertView.swift b/Source/Views/AlertView.swift
index 9aa3af4e..4641a396 100644
--- a/Source/Views/AlertView.swift
+++ b/Source/Views/AlertView.swift
@@ -125,7 +125,7 @@ class AlertView: AlertControllerView {
 
     private func createMessageLabelConstraints() {
         self.addConstraint(NSLayoutConstraint(item: self.messageLabel, attribute: .FirstBaseline,
-            relatedBy: .Equal, toItem: self.titleLabel, attribute: .Baseline , multiplier: 1,
+            relatedBy: .Equal, toItem: self.titleLabel, attribute: .LastBaseline , multiplier: 1,
             constant: self.visualStyle.verticalElementSpacing))
         let contentPadding = self.visualStyle.contentPadding
         let insets = UIEdgeInsets(top: 0, left: contentPadding.left, bottom: 0, right: -contentPadding.right)
@@ -147,7 +147,7 @@ class AlertView: AlertControllerView {
         let widthOffset = self.visualStyle.contentPadding.left + self.visualStyle.contentPadding.right
 
         self.addConstraint(NSLayoutConstraint(item: textFieldsView, attribute: .Top, relatedBy: .Equal,
-            toItem: self.messageLabel, attribute: .Baseline, multiplier: 1,
+            toItem: self.messageLabel, attribute: .LastBaseline, multiplier: 1,
             constant: self.visualStyle.verticalElementSpacing))
 
         textFieldsView.sdc_pinWidthToWidthOfView(self, offset: -widthOffset)