diff --git a/Crashlytics.framework/Versions/A/Crashlytics b/Crashlytics.framework/Versions/A/Crashlytics
index f286bd1..b0a896a 100644
Binary files a/Crashlytics.framework/Versions/A/Crashlytics and b/Crashlytics.framework/Versions/A/Crashlytics differ
diff --git a/Crashlytics.framework/Versions/A/Resources/Info.plist b/Crashlytics.framework/Versions/A/Resources/Info.plist
index 608be39..a97463c 100644
--- a/Crashlytics.framework/Versions/A/Resources/Info.plist
+++ b/Crashlytics.framework/Versions/A/Resources/Info.plist
@@ -15,13 +15,13 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.2.0</string>
+	<string>2.2.1</string>
 	<key>CFBundleSupportedPlatforms</key>
 	<array>
 		<string>iPhoneOS</string>
 	</array>
 	<key>CFBundleVersion</key>
-	<string>33</string>
+	<string>35</string>
 	<key>DTPlatformName</key>
 	<string>iphoneos</string>
 	<key>MinimumOSVersion</key>
diff --git a/Crashlytics.framework/run b/Crashlytics.framework/run
index d3ddf05..ca71288 100755
Binary files a/Crashlytics.framework/run and b/Crashlytics.framework/run differ
diff --git a/ShadowWeb/zh-Hans.lproj/Localizable.strings b/ShadowWeb/zh-Hans.lproj/Localizable.strings
index 8e139ab..b3f6abc 100644
--- a/ShadowWeb/zh-Hans.lproj/Localizable.strings
+++ b/ShadowWeb/zh-Hans.lproj/Localizable.strings
@@ -47,6 +47,7 @@
 "Turn Shadowsocks Off" = "关闭 Shadowsocks";
 "Open Server Preferences..." = "打开服务器设定...";
 "Please fill in the blanks." = "请填写以下内容。";
-"Show Logs..." = "显示日志..";
+"Show Logs..." = "显示日志...";
+"Edit PAC..." = "编辑 PAC...";
 "Quit" = "退出";
 "https://github.com/shadowsocks/shadowsocks-iOS/wiki/Shadowsocks-for-OSX-Help" = "https://github.com/shadowsocks/shadowsocks-iOS/wiki/Shadowsocks-for-OSX-%E5%B8%AE%E5%8A%A9";
\ No newline at end of file
diff --git a/ShadowsocksX/SWBAppDelegate.m b/ShadowsocksX/SWBAppDelegate.m
index 27ed8e3..4f112fb 100644
--- a/ShadowsocksX/SWBAppDelegate.m
+++ b/ShadowsocksX/SWBAppDelegate.m
@@ -20,8 +20,14 @@
     NSMenuItem *statusMenuItem;
     NSMenuItem *enableMenuItem;
     BOOL isRunning;
+    NSData *originalPACData;
+    FSEventStreamRef fsEventStream;
+    NSString *configPath;
+    NSString *PACPath;
 }
 
+static SWBAppDelegate *appDelegate;
+
 - (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
     [[NSAppleEventManager sharedAppleEventManager] setEventHandler:self andSelector:@selector(handleURLEvent:withReplyEvent:) forEventClass:kInternetEventClass andEventID:kAEGetURL];
 
@@ -31,10 +37,10 @@
         [self runProxy];
     });
 
-    NSData *pacData = [[NSData dataWithContentsOfURL:[[NSBundle mainBundle] URLForResource:@"proxy" withExtension:@"pac.gz"]] gunzippedData];
+    originalPACData = [[NSData dataWithContentsOfURL:[[NSBundle mainBundle] URLForResource:@"proxy" withExtension:@"pac.gz"]] gunzippedData];
     GCDWebServer *webServer = [[GCDWebServer alloc] init];
     [webServer addHandlerForMethod:@"GET" path:@"/proxy.pac" requestClass:[GCDWebServerRequest class] processBlock:^GCDWebServerResponse *(GCDWebServerRequest *request) {
-        return [GCDWebServerDataResponse responseWithData:pacData contentType:@"application/x-ns-proxy-autoconfig"];
+        return [GCDWebServerDataResponse responseWithData:[self PACData] contentType:@"application/x-ns-proxy-autoconfig"];
     }
     ];
 
@@ -53,6 +59,7 @@
     [menu addItem:enableMenuItem];
     [menu addItem:[NSMenuItem separatorItem]];
     [menu addItemWithTitle:_L(Open Server Preferences...) action:@selector(showConfigWindow) keyEquivalent:@""];
+    [menu addItemWithTitle:_L(Edit PAC...) action:@selector(editPAC) keyEquivalent:@""];
     [menu addItemWithTitle:_L(Show Logs...) action:@selector(showLogs) keyEquivalent:@""];
     [menu addItemWithTitle:_L(Help) action:@selector(showHelp) keyEquivalent:@""];
     [menu addItem:[NSMenuItem separatorItem]];
@@ -64,6 +71,19 @@
     configWindowController = [[SWBConfigWindowController alloc] initWithWindowNibName:@"ConfigWindow"];
 
     [self updateMenu];
+
+    configPath = [NSString stringWithFormat:@"%@/%@", NSHomeDirectory(), @".ShadowsocksX"];
+    PACPath = [NSString stringWithFormat:@"%@/%@", configPath, @"gfwlist.js"];
+    [self monitorPAC:configPath];
+    appDelegate = self;
+}
+
+- (NSData *)PACData {
+    if ([[NSFileManager defaultManager] fileExistsAtPath:PACPath]) {
+        return [NSData dataWithContentsOfFile:PACPath];
+    } else {
+        return originalPACData;
+    }
 }
 
 - (void)toggleRunning {
@@ -86,6 +106,60 @@
     }
 }
 
+void onPACChange(
+                ConstFSEventStreamRef streamRef,
+                void *clientCallBackInfo,
+                size_t numEvents,
+                void *eventPaths,
+                const FSEventStreamEventFlags eventFlags[],
+                const FSEventStreamEventId eventIds[])
+{
+    [appDelegate reloadPAC];
+}
+
+- (void)reloadPAC {
+    if (isRunning) {
+        [self toggleSystemProxy:NO];
+        [self toggleSystemProxy:YES];
+    }
+}
+
+- (void)monitorPAC:(NSString *)pacPath {
+    if (fsEventStream) {
+        return;
+    }
+    CFStringRef mypath = (__bridge CFStringRef)(pacPath);
+    CFArrayRef pathsToWatch = CFArrayCreate(NULL, (const void **)&mypath, 1, NULL);
+    void *callbackInfo = NULL; // could put stream-specific data here.
+    CFAbsoluteTime latency = 3.0; /* Latency in seconds */
+
+    /* Create the stream, passing in a callback */
+    fsEventStream = FSEventStreamCreate(NULL,
+            &onPACChange,
+            callbackInfo,
+            pathsToWatch,
+            kFSEventStreamEventIdSinceNow, /* Or a previous event ID */
+            latency,
+            kFSEventStreamCreateFlagNone /* Flags explained in reference */
+    );
+    FSEventStreamScheduleWithRunLoop(fsEventStream, [[NSRunLoop mainRunLoop] getCFRunLoop], (__bridge CFStringRef)NSDefaultRunLoopMode);
+    FSEventStreamStart(fsEventStream);
+}
+
+- (void)editPAC {
+
+    if (![[NSFileManager defaultManager] fileExistsAtPath:PACPath]) {
+        NSError *error = nil;
+        [[NSFileManager defaultManager] createDirectoryAtPath:configPath withIntermediateDirectories:NO attributes:nil error:&error];
+        // TODO check error
+        [originalPACData writeToFile:PACPath atomically:YES];
+    }
+    [self monitorPAC:configPath];
+    
+    NSArray *fileURLs = @[[NSURL fileURLWithPath:PACPath]];
+    [[NSWorkspace sharedWorkspace] activateFileViewerSelectingURLs:fileURLs];
+} 
+
 - (void)showLogs {
     [[NSWorkspace sharedWorkspace] launchApplication:@"/Applications/Utilities/Console.app"];
 }
diff --git a/ShadowsocksX/ShadowsocksX-Info.plist b/ShadowsocksX/ShadowsocksX-Info.plist
index 8cd8151..f4c4c18 100644
--- a/ShadowsocksX/ShadowsocksX-Info.plist
+++ b/ShadowsocksX/ShadowsocksX-Info.plist
@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0.7</string>
+	<string>1.0.8</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleURLTypes</key>
@@ -36,7 +36,7 @@
 		</dict>
 	</array>
 	<key>CFBundleVersion</key>
-	<string>1.0.7</string>
+	<string>1.0.8</string>
 	<key>LSApplicationCategoryType</key>
 	<string>public.app-category.utilities</string>
 	<key>LSMinimumSystemVersion</key>