diff --git a/Sources/CAMediaTimingFunction+Windless.swift b/Sources/CAMediaTimingFunction+Windless.swift
index 24bb3cb..8f65e4d 100644
--- a/Sources/CAMediaTimingFunction+Windless.swift
+++ b/Sources/CAMediaTimingFunction+Windless.swift
@@ -10,11 +10,11 @@ import UIKit
 
 public extension CAMediaTimingFunction {
     
-    static let linear = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
+    static let linear = CAMediaTimingFunction(name: CAMediaTimingFunctionName.linear)
     
-    static let easeIn = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseIn)
+    static let easeIn = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeIn)
     
-    static let easeOut = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseOut)
+    static let easeOut = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeOut)
     
-    static let easeInOut = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
+    static let easeInOut = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
 }
diff --git a/Sources/TransitionFactory.swift b/Sources/TransitionFactory.swift
index 5842812..4a82f7f 100644
--- a/Sources/TransitionFactory.swift
+++ b/Sources/TransitionFactory.swift
@@ -12,7 +12,7 @@ class TransitionFactory {
     
     static func fade() -> CATransition {
         let transition = CATransition()
-        transition.type = kCATransitionFade
+        transition.type = CATransitionType.fade
         return transition
     }
 }
diff --git a/Sources/WindlessContext.swift b/Sources/WindlessContext.swift
index 11a1ce5..7b712a0 100644
--- a/Sources/WindlessContext.swift
+++ b/Sources/WindlessContext.swift
@@ -53,7 +53,7 @@ extension WindlessContext {
         appendMultilineLayersPathIfNeeded(on: path)
         let maskLayer = CAShapeLayer()
         maskLayer.path = path.cgPath
-        maskLayer.fillRule = kCAFillRuleEvenOdd
+        maskLayer.fillRule = CAShapeLayerFillRule.evenOdd
         coverLayer.mask = maskLayer
     }
     
diff --git a/Windless.xcodeproj/project.pbxproj b/Windless.xcodeproj/project.pbxproj
index 72a1ef0..0f60e35 100644
--- a/Windless.xcodeproj/project.pbxproj
+++ b/Windless.xcodeproj/project.pbxproj
@@ -295,7 +295,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0900;
-				LastUpgradeCheck = 0900;
+				LastUpgradeCheck = 1010;
 				ORGANIZATIONNAME = Windless;
 				TargetAttributes = {
 					4A1C00B51FA102E5006DEA4C = {
@@ -308,7 +308,7 @@
 					};
 					52D6D9851BEFF229002C0205 = {
 						CreatedOnToolsVersion = 7.1;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 1010;
 					};
 				};
 			};
@@ -497,12 +497,14 @@
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
@@ -554,12 +556,14 @@
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
@@ -613,7 +617,7 @@
 				PRODUCT_NAME = Windless;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -637,7 +641,7 @@
 				PRODUCT_NAME = Windless;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -650,7 +654,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "com.Windless.Windless-iOS-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -663,7 +667,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "com.Windless.Windless-iOS-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
diff --git a/Windless.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/Windless.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/Windless.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/Windless.xcodeproj/xcshareddata/xcschemes/Windless-iOS.xcscheme b/Windless.xcodeproj/xcshareddata/xcschemes/Windless-iOS.xcscheme
index c1a5e07..649d782 100644
--- a/Windless.xcodeproj/xcshareddata/xcschemes/Windless-iOS.xcscheme
+++ b/Windless.xcodeproj/xcshareddata/xcschemes/Windless-iOS.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0900"
+   LastUpgradeVersion = "1010"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,9 +26,8 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      codeCoverageEnabled = "YES">
+      codeCoverageEnabled = "YES"
+      shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -57,7 +56,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"