diff --git a/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.pbxproj b/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.pbxproj
index 9183687..7cf3dab 100644
--- a/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.pbxproj
+++ b/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.pbxproj
@@ -321,12 +321,12 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0730;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 1000;
 				ORGANIZATIONNAME = "egg swift";
 				TargetAttributes = {
 					F690772C1D0D0AE300BE91FE = {
 						CreatedOnToolsVersion = 7.3.1;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 1000;
 						ProvisioningStyle = Automatic;
 					};
 					F692000B1CDB9A530029EF47 = {
@@ -465,6 +465,7 @@
 		F69077331D0D0AE300BE91FE /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
 				DEFINES_MODULE = YES;
@@ -478,7 +479,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.eggswift.ESPullToRefresh;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -487,6 +488,7 @@
 		F69077341D0D0AE300BE91FE /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
 				DEFINES_MODULE = YES;
@@ -500,7 +502,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.eggswift.ESPullToRefresh;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -516,14 +518,22 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				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;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -566,14 +576,22 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				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;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
diff --git a/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/ESPullToRefreshExample/ESPullToRefreshExample.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/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/xcshareddata/xcschemes/ESPullToRefresh.xcscheme b/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/xcshareddata/xcschemes/ESPullToRefresh.xcscheme
index bba3e36..cd30463 100644
--- a/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/xcshareddata/xcschemes/ESPullToRefresh.xcscheme
+++ b/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/xcshareddata/xcschemes/ESPullToRefresh.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "1000"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/Sources/Animator/ESRefreshFooterAnimator.swift b/Sources/Animator/ESRefreshFooterAnimator.swift
index 59e1a33..fe05d8c 100644
--- a/Sources/Animator/ESRefreshFooterAnimator.swift
+++ b/Sources/Animator/ESRefreshFooterAnimator.swift
@@ -47,7 +47,7 @@ open class ESRefreshFooterAnimator: UIView, ESRefreshProtocol, ESRefreshAnimator
     }()
     
     fileprivate let indicatorView: UIActivityIndicatorView = {
-        let indicatorView = UIActivityIndicatorView.init(activityIndicatorStyle: .gray)
+        let indicatorView = UIActivityIndicatorView.init(style: .gray)
         indicatorView.isHidden = true
         return indicatorView
     }()
diff --git a/Sources/Animator/ESRefreshHeaderAnimator.swift b/Sources/Animator/ESRefreshHeaderAnimator.swift
index b24c4a2..b939cd4 100644
--- a/Sources/Animator/ESRefreshHeaderAnimator.swift
+++ b/Sources/Animator/ESRefreshHeaderAnimator.swift
@@ -66,7 +66,7 @@ open class ESRefreshHeaderAnimator: UIView, ESRefreshProtocol, ESRefreshAnimator
     }()
     
     fileprivate let indicatorView: UIActivityIndicatorView = {
-        let indicatorView = UIActivityIndicatorView.init(activityIndicatorStyle: .gray)
+        let indicatorView = UIActivityIndicatorView.init(style: .gray)
         indicatorView.isHidden = true
         return indicatorView
     }()
@@ -119,7 +119,7 @@ open class ESRefreshHeaderAnimator: UIView, ESRefreshProtocol, ESRefreshAnimator
             titleLabel.text = releaseToRefreshDescription
             self.setNeedsLayout()
             self.impact()
-            UIView.animate(withDuration: 0.2, delay: 0.0, options: UIViewAnimationOptions(), animations: {
+            UIView.animate(withDuration: 0.2, delay: 0.0, options: UIView.AnimationOptions(), animations: {
                 [weak self] in
                 self?.imageView.transform = CGAffineTransform(rotationAngle: 0.000001 - CGFloat.pi)
             }) { (animated) in }
@@ -127,7 +127,7 @@ open class ESRefreshHeaderAnimator: UIView, ESRefreshProtocol, ESRefreshAnimator
         case .pullToRefresh:
             titleLabel.text = pullToRefreshDescription
             self.setNeedsLayout()
-            UIView.animate(withDuration: 0.2, delay: 0.0, options: UIViewAnimationOptions(), animations: {
+            UIView.animate(withDuration: 0.2, delay: 0.0, options: UIView.AnimationOptions(), animations: {
                 [weak self] in
                 self?.imageView.transform = CGAffineTransform.identity
             }) { (animated) in }
diff --git a/Sources/ESPullToRefresh+Manager.swift b/Sources/ESPullToRefresh+Manager.swift
index 6196cb4..808a30d 100644
--- a/Sources/ESPullToRefresh+Manager.swift
+++ b/Sources/ESPullToRefresh+Manager.swift
@@ -88,16 +88,16 @@ open class ESRefreshDataManager {
         }
     }
     
-    open static func clearAll() {
+    public static func clearAll() {
         self.clearLastRefreshInfo()
         self.clearExpiredTimeIntervalInfo()
     }
     
-    open static func clearLastRefreshInfo() {
+    public static func clearLastRefreshInfo() {
         UserDefaults.standard.set(nil, forKey: ESRefreshDataManager.lastRefreshKey)
     }
     
-    open static func clearExpiredTimeIntervalInfo() {
+    public static func clearExpiredTimeIntervalInfo() {
         UserDefaults.standard.set(nil, forKey: ESRefreshDataManager.expiredTimeIntervalKey)
     }
     
diff --git a/Sources/ESRefreshProtocol.swift b/Sources/ESRefreshProtocol.swift
index b32ff3a..b7e0ca8 100644
--- a/Sources/ESRefreshProtocol.swift
+++ b/Sources/ESRefreshProtocol.swift
@@ -99,7 +99,7 @@ fileprivate class ESRefreshImpacter {
         return nil
     }()
     
-    static open func impact() -> Void {
+    static public func impact() -> Void {
         if #available(iOS 10.0, *) {
             if let impacter = impacter as? UIImpactFeedbackGenerator {
                 impacter.impactOccurred()