diff --git a/ICSPullToRefresh.xcodeproj/project.pbxproj b/ICSPullToRefresh.xcodeproj/project.pbxproj
index f583b45..b48cabb 100644
--- a/ICSPullToRefresh.xcodeproj/project.pbxproj
+++ b/ICSPullToRefresh.xcodeproj/project.pbxproj
@@ -212,6 +212,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 				Base,
 			);
@@ -409,7 +410,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0.1;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -429,7 +430,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "com.touchingapp.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0.1;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
diff --git a/ICSPullToRefresh.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/ICSPullToRefresh.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/ICSPullToRefresh.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/ICSPullToRefresh/ICSInfiniteScrolling.swift b/ICSPullToRefresh/ICSInfiniteScrolling.swift
index e6a8142..d475024 100644
--- a/ICSPullToRefresh/ICSInfiniteScrolling.swift
+++ b/ICSPullToRefresh/ICSInfiniteScrolling.swift
@@ -22,7 +22,7 @@ fileprivate struct Constants {
 
 public extension UIScrollView{
     
-    public var infiniteScrollingView: InfiniteScrollingView? {
+    var infiniteScrollingView: InfiniteScrollingView? {
         get {
             return objc_getAssociatedObject(self, &infiniteScrollingViewKey) as? InfiniteScrollingView
         }
@@ -33,14 +33,14 @@ public extension UIScrollView{
         }
     }
     
-    public var showsInfiniteScrolling: Bool {
+    var showsInfiniteScrolling: Bool {
         guard let infiniteScrollingView = infiniteScrollingView else {
             return false
         }
         return !infiniteScrollingView.isHidden
     }
     
-    public func addInfiniteScrollingWithHandler(_ actionHandler: @escaping ActionHandler){
+    func addInfiniteScrollingWithHandler(_ actionHandler: @escaping ActionHandler){
         if infiniteScrollingView == nil {
             infiniteScrollingView = InfiniteScrollingView(frame: CGRect(x: CGFloat(0), y: contentSize.height, width: bounds.width, height: Constants.infiniteScrollingViewHeight))
             addSubview(infiniteScrollingView!)
@@ -51,12 +51,12 @@ public extension UIScrollView{
         setShowsInfiniteScrolling(true)
     }
     
-    public func triggerInfiniteScrolling() {
+    func triggerInfiniteScrolling() {
         infiniteScrollingView?.state = .triggered
         infiniteScrollingView?.startAnimating()
     }
     
-    public func setShowsInfiniteScrolling(_ showsInfiniteScrolling: Bool) {
+    func setShowsInfiniteScrolling(_ showsInfiniteScrolling: Bool) {
         guard let infiniteScrollingView = infiniteScrollingView else {
             return
         }
@@ -248,7 +248,7 @@ open class InfiniteScrollingView: UIView {
     }()
     
     fileprivate lazy var activityIndicator: UIActivityIndicatorView = {
-        let activityIndicator = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.gray)
+        let activityIndicator = UIActivityIndicatorView(style: UIActivityIndicatorView.Style.gray)
         activityIndicator.hidesWhenStopped = true
         return activityIndicator
     }()
@@ -257,8 +257,8 @@ open class InfiniteScrollingView: UIView {
         activityIndicator.color = color
     }
 
-    open func setActivityIndicatorStyle(_ style: UIActivityIndicatorViewStyle) {
-        activityIndicator.activityIndicatorViewStyle = style
+    open func setActivityIndicatorStyle(_ style: UIActivityIndicatorView.Style) {
+        activityIndicator.style = style
     }
     
 }
diff --git a/ICSPullToRefresh/ICSPullToRefresh.swift b/ICSPullToRefresh/ICSPullToRefresh.swift
index d74e691..2202732 100644
--- a/ICSPullToRefresh/ICSPullToRefresh.swift
+++ b/ICSPullToRefresh/ICSPullToRefresh.swift
@@ -23,7 +23,7 @@ fileprivate struct Constants {
 
 public extension UIScrollView{
     
-    public var pullToRefreshView: PullToRefreshView? {
+    var pullToRefreshView: PullToRefreshView? {
         get {
             return objc_getAssociatedObject(self, &pullToRefreshViewKey) as? PullToRefreshView
         }
@@ -34,14 +34,14 @@ public extension UIScrollView{
         }
     }
     
-    public var showsPullToRefresh: Bool {
+    var showsPullToRefresh: Bool {
         guard let pullToRefreshView = pullToRefreshView else {
             return false
         }
         return !pullToRefreshView.isHidden
     }
     
-    public func addPullToRefreshHandler(_ actionHandler: @escaping ActionHandler){
+    func addPullToRefreshHandler(_ actionHandler: @escaping ActionHandler){
         if pullToRefreshView == nil {
             pullToRefreshView = PullToRefreshView(frame: CGRect(x: CGFloat(0), y: -Constants.pullToRefreshViewHeight, width: self.bounds.width, height: Constants.pullToRefreshViewHeight))
             addSubview(pullToRefreshView!)
@@ -52,12 +52,12 @@ public extension UIScrollView{
         setShowsPullToRefresh(true)
     }
     
-    public func triggerPullToRefresh() {
+    func triggerPullToRefresh() {
         pullToRefreshView?.state = .triggered
         pullToRefreshView?.startAnimating()
     }
     
-    public func setShowsPullToRefresh(_ showsPullToRefresh: Bool) {
+    func setShowsPullToRefresh(_ showsPullToRefresh: Bool) {
         guard let pullToRefreshView = pullToRefreshView else {
             return
         }
@@ -271,7 +271,7 @@ open class PullToRefreshView: UIView {
     }()
     
     lazy var activityIndicator: UIActivityIndicatorView = {
-        let activityIndicator = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.gray)
+        let activityIndicator = UIActivityIndicatorView(style: UIActivityIndicatorView.Style.gray)
         activityIndicator.hidesWhenStopped = false
         return activityIndicator
     }()
@@ -280,8 +280,8 @@ open class PullToRefreshView: UIView {
         activityIndicator.color = color
     }
 
-    open func setActivityIndicatorStyle(_ style: UIActivityIndicatorViewStyle) {
-        activityIndicator.activityIndicatorViewStyle = style
+    open func setActivityIndicatorStyle(_ style: UIActivityIndicatorView.Style) {
+        activityIndicator.style = style
     }
     
 }