diff --git a/Example/DelegateAppearanceViewController.m b/Example/DelegateAppearanceViewController.m
index 228375a..565edaa 100644
--- a/Example/DelegateAppearanceViewController.m
+++ b/Example/DelegateAppearanceViewController.m
@@ -104,7 +104,7 @@
     self.calendar = calendar;
     
     
-    UIBarButtonItem *todayItem = [[UIBarButtonItem alloc] initWithTitle:@"TODAY" style:UIBarButtonItemStyleBordered target:self action:@selector(todayItemClicked:)];
+    UIBarButtonItem *todayItem = [[UIBarButtonItem alloc] initWithTitle:@"TODAY" style:UIBarButtonItemStylePlain target:self action:@selector(todayItemClicked:)];
     self.navigationItem.rightBarButtonItem = todayItem;
     
 }
diff --git a/Example/FSCalendar.xcodeproj/project.pbxproj b/Example/FSCalendar.xcodeproj/project.pbxproj
index c732cbb..48fc6ad 100644
--- a/Example/FSCalendar.xcodeproj/project.pbxproj
+++ b/Example/FSCalendar.xcodeproj/project.pbxproj
@@ -725,7 +725,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -762,7 +762,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;
@@ -775,7 +775,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;
 				INFOPLIST_FILE = "$(SRCROOT)/Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchao.FSCalendarExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -789,7 +789,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;
 				INFOPLIST_FILE = "$(SRCROOT)/Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchao.FSCalendarExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -811,7 +811,7 @@
 				);
 				INFOPLIST_FILE = "$(SRCROOT)/../FSCalendar/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchao.FSCalendar;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -832,7 +832,7 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = "$(SRCROOT)/../FSCalendar/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchao.FSCalendar;
 				PRODUCT_NAME = "$(TARGET_NAME)";
diff --git a/Example/FSTableViewController.m b/Example/FSTableViewController.m
index 7961c73..7dfa073 100644
--- a/Example/FSTableViewController.m
+++ b/Example/FSTableViewController.m
@@ -21,7 +21,7 @@
 {
     [super viewDidLoad];
     
-    self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStyleBordered target:nil action:nil];
+    self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];
     
     self.viewControllers = @[
                              [ScopeHandleViewController class],
diff --git a/Example/FullScreenExampleViewController.m b/Example/FullScreenExampleViewController.m
index 26a1bb0..7d0ee52 100644
--- a/Example/FullScreenExampleViewController.m
+++ b/Example/FullScreenExampleViewController.m
@@ -50,9 +50,9 @@
     [self.view addSubview:calendar];
     self.calendar = calendar;
     
-    UIBarButtonItem *todayItem = [[UIBarButtonItem alloc] initWithTitle:@"Today" style:UIBarButtonItemStyleBordered target:self action:@selector(todayItemClicked:)];
+    UIBarButtonItem *todayItem = [[UIBarButtonItem alloc] initWithTitle:@"Today" style:UIBarButtonItemStylePlain target:self action:@selector(todayItemClicked:)];
     
-    UIBarButtonItem *lunarItem = [[UIBarButtonItem alloc] initWithTitle:@"Lunar" style:UIBarButtonItemStyleBordered target:self action:@selector(lunarItemClicked:)];
+    UIBarButtonItem *lunarItem = [[UIBarButtonItem alloc] initWithTitle:@"Lunar" style:UIBarButtonItemStylePlain target:self action:@selector(lunarItemClicked:)];
     [lunarItem setTitleTextAttributes:@{NSForegroundColorAttributeName:[UIColor magentaColor]} forState:UIControlStateNormal];
     self.navigationItem.rightBarButtonItems = @[lunarItem, todayItem];
 }
diff --git a/Example/StoryboardExampleViewController.m b/Example/StoryboardExampleViewController.m
index a164285..75b1fc8 100644
--- a/Example/StoryboardExampleViewController.m
+++ b/Example/StoryboardExampleViewController.m
@@ -25,7 +25,7 @@
 {
     [super viewDidLoad];
     
-    self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStyleBordered target:nil action:nil];
+    self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];
     
     _lunarCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierChinese];
     _lunarCalendar.locale = [NSLocale localeWithLocaleIdentifier:@"zh-CN"];
diff --git a/FSCalendar/Info.plist b/FSCalendar/Info.plist
index 60f7e2b..91a0d06 100644
--- a/FSCalendar/Info.plist
+++ b/FSCalendar/Info.plist
@@ -9,7 +9,7 @@
 	<key>CFBundleIdentifier</key>
 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
+	<string>8.0</string>
 	<key>CFBundleName</key>
 	<string>$(PRODUCT_NAME)</string>
 	<key>CFBundlePackageType</key>