diff --git a/Classes/ESTMusicIndicatorContentView.swift b/Classes/ESTMusicIndicatorContentView.swift
index f90d3d1..891a792 100644
--- a/Classes/ESTMusicIndicatorContentView.swift
+++ b/Classes/ESTMusicIndicatorContentView.swift
@@ -175,7 +175,7 @@ class ESTMusicIndicatorContentView: UIView {
         animation.repeatCount = Float.infinity // Forever
         animation.autoreverses = true
         animation.duration = TimeInterval((CGFloat(basePeriod) / 2) * (kBarMaxPeakHeight / peakHeight))
-        animation.timingFunction = CAMediaTimingFunction.init(name: kCAMediaTimingFunctionEaseIn)
+        animation.timingFunction = CAMediaTimingFunction.init(name: CAMediaTimingFunctionName.easeIn)
         
         layer.add(animation, forKey: kOscillationAnimationKey)
     }
@@ -188,7 +188,7 @@ class ESTMusicIndicatorContentView: UIView {
         }
         animation.toValue = NSValue(cgRect:layer.bounds)
         animation.duration = kDecayDuration
-        animation.timingFunction = CAMediaTimingFunction.init(name: kCAMediaTimingFunctionEaseOut)
+        animation.timingFunction = CAMediaTimingFunction.init(name: CAMediaTimingFunctionName.easeOut)
         
         layer.add(animation, forKey: kDecayAnimationKey)
     }
diff --git a/Classes/ESTMusicIndicatorView.swift b/Classes/ESTMusicIndicatorView.swift
index 00a5eb3..53f06f9 100644
--- a/Classes/ESTMusicIndicatorView.swift
+++ b/Classes/ESTMusicIndicatorView.swift
@@ -126,18 +126,18 @@ open class ESTMusicIndicatorView: UIView {
         addSubview(contentView)
         prepareLayoutPriorities()
         setNeedsUpdateConstraints()
-        NotificationCenter.default.addObserver(self, selector: #selector(UIApplicationDelegate.applicationDidEnterBackground(_:)), name: NSNotification.Name.UIApplicationDidEnterBackground, object: nil)
-        NotificationCenter.default.addObserver(self, selector: #selector(UIApplicationDelegate.applicationWillEnterForeground(_:)), name: NSNotification.Name.UIApplicationWillEnterForeground, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(UIApplicationDelegate.applicationDidEnterBackground(_:)), name: UIApplication.didEnterBackgroundNotification, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(UIApplicationDelegate.applicationWillEnterForeground(_:)), name: UIApplication.willEnterForegroundNotification, object: nil)
     }
     
     private func prepareLayoutPriorities() {
         // Custom views should set default values for both orientations on creation,
         // based on their content, typically to NSLayoutPriorityDefaultLow or NSLayoutPriorityDefaultHigh.
-        setContentHuggingPriority(UILayoutPriority.defaultHigh, for: UILayoutConstraintAxis.horizontal)
-        setContentHuggingPriority(UILayoutPriority.defaultHigh, for: UILayoutConstraintAxis.vertical)
+        setContentHuggingPriority(UILayoutPriority.defaultHigh, for: NSLayoutConstraint.Axis.horizontal)
+        setContentHuggingPriority(UILayoutPriority.defaultHigh, for: NSLayoutConstraint.Axis.vertical)
         
-        setContentCompressionResistancePriority(UILayoutPriority.defaultHigh, for: UILayoutConstraintAxis.horizontal)
-        setContentCompressionResistancePriority(UILayoutPriority.defaultHigh, for: UILayoutConstraintAxis.vertical)
+        setContentCompressionResistancePriority(UILayoutPriority.defaultHigh, for: NSLayoutConstraint.Axis.horizontal)
+        setContentCompressionResistancePriority(UILayoutPriority.defaultHigh, for: NSLayoutConstraint.Axis.vertical)
     }
     
     deinit {
diff --git a/Example/ESTMusicIndicator.xcodeproj/project.pbxproj b/Example/ESTMusicIndicator.xcodeproj/project.pbxproj
index 09c8f34..5250208 100644
--- a/Example/ESTMusicIndicator.xcodeproj/project.pbxproj
+++ b/Example/ESTMusicIndicator.xcodeproj/project.pbxproj
@@ -246,28 +246,28 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0710;
-				LastUpgradeCheck = 0940;
+				LastUpgradeCheck = 1160;
 				ORGANIZATIONNAME = "The EST Group";
 				TargetAttributes = {
 					564E7FE71C14624500353CC0 = {
 						CreatedOnToolsVersion = 7.1.1;
-						LastSwiftMigration = 0940;
+						LastSwiftMigration = 1160;
 					};
 					564E7FFB1C14624500353CC0 = {
 						CreatedOnToolsVersion = 7.1.1;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1160;
 						TestTargetID = 564E7FE71C14624500353CC0;
 					};
 					564E80061C14624500353CC0 = {
 						CreatedOnToolsVersion = 7.1.1;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1160;
 						TestTargetID = 564E7FE71C14624500353CC0;
 					};
 				};
 			};
 			buildConfigurationList = 564E7FE31C14624500353CC0 /* Build configuration list for PBXProject "ESTMusicIndicator" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
@@ -373,6 +373,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
@@ -420,6 +421,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -427,6 +429,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
@@ -467,6 +470,7 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_VERSION = 5.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;
@@ -481,7 +485,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.est-group.ESTMusicIndicator";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -495,7 +499,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.est-group.ESTMusicIndicator";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -508,7 +512,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.est-group.ESTMusicIndicatorTests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/ESTMusicIndicator.app/ESTMusicIndicator";
 			};
 			name = Debug;
@@ -522,7 +526,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.est-group.ESTMusicIndicatorTests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/ESTMusicIndicator.app/ESTMusicIndicator";
 			};
 			name = Release;
@@ -535,7 +539,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.est-group.ESTMusicIndicatorUITests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				TEST_TARGET_NAME = ESTMusicIndicator;
 				USES_XCTRUNNER = YES;
 			};
@@ -549,7 +553,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.est-group.ESTMusicIndicatorUITests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 				TEST_TARGET_NAME = ESTMusicIndicator;
 				USES_XCTRUNNER = YES;
 			};