diff --git a/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.pbxproj b/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.pbxproj
index bb6c314..589dd38 100644
--- a/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.pbxproj
+++ b/ESPullToRefreshExample/ESPullToRefreshExample.xcodeproj/project.pbxproj
@@ -314,9 +314,11 @@
 				TargetAttributes = {
 					F690772C1D0D0AE300BE91FE = {
 						CreatedOnToolsVersion = 7.3.1;
+						LastSwiftMigration = 0800;
 					};
 					F692000B1CDB9A530029EF47 = {
 						CreatedOnToolsVersion = 7.3;
+						LastSwiftMigration = 0800;
 					};
 				};
 			};
@@ -439,10 +441,12 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = ESPullToRefresh/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.eggswift.ESPullToRefresh;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 2.3;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -458,10 +462,12 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = ESPullToRefresh/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.eggswift.ESPullToRefresh;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 2.3;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -563,6 +569,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = eggswift.ESPullToRefreshExample;
 				PRODUCT_NAME = ESRefresh;
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -577,6 +584,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = eggswift.ESPullToRefreshExample;
 				PRODUCT_NAME = ESRefresh;
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
diff --git a/ESPullToRefreshExample/ESPullToRefreshExample/Assets.xcassets/AppIcon.appiconset/Contents.json b/ESPullToRefreshExample/ESPullToRefreshExample/Assets.xcassets/AppIcon.appiconset/Contents.json
index e8d8aa2..25aa4ac 100644
--- a/ESPullToRefreshExample/ESPullToRefreshExample/Assets.xcassets/AppIcon.appiconset/Contents.json
+++ b/ESPullToRefreshExample/ESPullToRefreshExample/Assets.xcassets/AppIcon.appiconset/Contents.json
@@ -1,5 +1,15 @@
 {
   "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
     {
       "size" : "29x29",
       "idiom" : "iphone",
@@ -36,6 +46,16 @@
       "filename" : "Icon-60@3x.png",
       "scale" : "3x"
     },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
     {
       "size" : "29x29",
       "idiom" : "ipad",
diff --git a/ESPullToRefreshExample/ESPullToRefreshExample/WebViewController.swift b/ESPullToRefreshExample/ESPullToRefreshExample/WebViewController.swift
index feaaf2a..525cf27 100644
--- a/ESPullToRefreshExample/ESPullToRefreshExample/WebViewController.swift
+++ b/ESPullToRefreshExample/ESPullToRefreshExample/WebViewController.swift
@@ -43,8 +43,14 @@ class WebViewController: UIViewController, UIWebViewDelegate {
         self.webView.scrollView.alwaysBounceVertical = true
     }
     
+    #if swift(>=2.3)
+    func webView(webView: UIWebView, didFailLoadWithError error: NSError) {
+        self.webView.scrollView.es_stopPullToRefresh(completion: false)
+    }
+    #else
     func webView(webView: UIWebView, didFailLoadWithError error: NSError?) {
         self.webView.scrollView.es_stopPullToRefresh(completion: false)
     }
+    #endif
 
 }