diff --git a/Dash/DHAppDelegate.m b/Dash/DHAppDelegate.m
index 8fee2765..84ed65d9 100644
--- a/Dash/DHAppDelegate.m
+++ b/Dash/DHAppDelegate.m
@@ -190,7 +190,7 @@ - (void)applicationDidReceiveMemoryWarning:(UIApplication *)application
     NSLog(@"did receive memory warning");
 }
 
-- (void)application:(UIApplication *)application handleEventsForBackgroundURLSession:(NSString *)identifier completionHandler:(void (^)())completionHandler
+- (void)application:(UIApplication *)application handleEventsForBackgroundURLSession:(NSString *)identifier completionHandler:(void (^)(void))completionHandler
 {
     [[NSOperationQueue mainQueue] addOperationWithBlock:^{
         completionHandler();
@@ -246,7 +246,7 @@ - (void)checkCommitHashes
                              @"DHDBUnifiedOperation": @"1671a905",
                              @"DHWebViewController": @"0bc6a10d",
                              @"DHWebPreferences": @"cd091ec9",
-                             @"DHDocsetDownloader": @"82da84c0",
+                             @"DHDocsetDownloader": @"7d7e0b32",
                              @"PlatformIcons": @"82da84c0",
                              @"DHTypes": @"5ed28f56",
                              @"Types": @"5ed28f56",
diff --git a/Dash/DHDocsetDownloader.m b/Dash/DHDocsetDownloader.m
index e7f81be5..838f0107 100644
--- a/Dash/DHDocsetDownloader.m
+++ b/Dash/DHDocsetDownloader.m
@@ -205,7 +205,7 @@ - (void)setUp // doesn't get called unless you call the singleton from DHAppDele
                            [DHFeed feedWithFeed:@"Stylus.xml" icon:@"stylus" aliases:@[@"nodejs", @"node.js"] doesNotHaveVersions:NO],
                            [DHFeed feedWithFeed:@"Susy.xml" icon:@"susy" aliases:nil doesNotHaveVersions:NO],
                            [DHFeed feedWithFeed:@"SVG.xml" icon:@"svg" aliases:@[@"mdn", @"mozilla developer network"] doesNotHaveVersions:YES],
-                           [DHFeed feedWithFeed:@"Swift.xml" icon:@"swift" aliases:@[@"leopard", @"snow leopard", @"lion", @"mountain lion", @"mavericks", @"yosemite", @"10.10", @"10.8", @"10.6", @"mac osx", @"10.7", @"10.9", @"10.5", @"xcode", @"apple", @"cocoa", @"objective-c", @"objc", @"iphone", @"ipad", @"cocoa touch"] doesNotHaveVersions:NO],
+                           [DHFeed feedWithFeed:@"Swift.xml" icon:@"swift" aliases:@[@"leopard", @"snow leopard", @"lion", @"mountain lion", @"mavericks", @"yosemite", @"10.10", @"10.8", @"10.6", @"mac osx", @"10.7", @"10.9", @"10.5", @"xcode", @"apple", @"cocoa", @"objective-c", @"objc", @"iphone", @"ipad", @"cocoa touch"] doesNotHaveVersions:YES],
                            [DHFeed feedWithFeed:@"Symfony.xml" icon:@"symfony" aliases:@[@"php"] doesNotHaveVersions:NO],
                            [DHFeed feedWithFeed:@"Tcl.xml" icon:@"tcl" aliases:@[@"tcl/tk", @"tcltk", @"tcl tk"] doesNotHaveVersions:NO],
                            [DHFeed feedWithFeed:@"Tornado.xml" icon:@"tornado" aliases:@[@"python", @"tornado web server"] doesNotHaveVersions:NO],
@@ -236,7 +236,7 @@ - (void)setUp // doesn't get called unless you call the singleton from DHAppDele
     for(NSDictionary *feedDictionary in savedFeeds)
     {
         DHFeed *savedFeed = [DHFeed feedWithDictionaryRepresentation:feedDictionary];
-        if([@[@"http://kapeli.com/feeds/OS_X.xml", @"http://kapeli.com/feeds/watchOS.xml", @"http://kapeli.com/feeds/iOS.xml", @"http://kapeli.com/feeds/tvOS.xml", @"http://kapeli.com/feeds/Jade.xml", @"http://kapeli.com/feeds/Angular.dart.xml", @"http://kapeli.com/feeds/AngularJS.xml", @"http://kapeli.com/feeds/AngularTS.xml", @"http://kapeli.com/feeds/Gradle_Groovy_API.xml", @"http://kapeli.com/feeds/XUL.xml"] containsObject:savedFeed.feedURL])
+        if([@[@"http://kapeli.com/feeds/OS_X.xml", @"http://kapeli.com/feeds/watchOS.xml", @"http://kapeli.com/feeds/iOS.xml", @"http://kapeli.com/feeds/tvOS.xml", @"http://kapeli.com/feeds/Jade.xml", @"http://kapeli.com/feeds/Angular.dart.xml", @"http://kapeli.com/feeds/Swift.xml", @"http://kapeli.com/feeds/AngularTS.xml", @"http://kapeli.com/feeds/Gradle_Groovy_API.xml", @"http://kapeli.com/feeds/XUL.xml"] containsObject:savedFeed.feedURL])
         {
             if(savedFeed.installed)
             {
@@ -252,7 +252,7 @@ - (void)setUp // doesn't get called unless you call the singleton from DHAppDele
             savedFeed.installed = NO;
             savedFeed.installedVersion = nil;
         }
-        if([@[@"http://kapeli.com/feeds/OS_X.xml", @"http://kapeli.com/feeds/Jade.xml", @"http://kapeli.com/feeds/Apple_Guides_and_Sample_Code.xml", @"http://kapeli.com/feeds/Angular.dart.xml", @"http://kapeli.com/feeds/AngularJS.xml", @"http://kapeli.com/feeds/AngularTS.xml", @"http://kapeli.com/feeds/Gradle_Groovy_API.xml", @"http://kapeli.com/feeds/XUL.xml"] containsObject:savedFeed.feedURL])
+        if([@[@"http://kapeli.com/feeds/OS_X.xml", @"http://kapeli.com/feeds/Jade.xml", @"http://kapeli.com/feeds/Apple_Guides_and_Sample_Code.xml", @"http://kapeli.com/feeds/Angular.dart.xml", @"http://kapeli.com/feeds/AngularTS.xml", @"http://kapeli.com/feeds/Gradle_Groovy_API.xml", @"http://kapeli.com/feeds/XUL.xml"] containsObject:savedFeed.feedURL])
         {
             continue;
         }
@@ -710,6 +710,11 @@ - (BOOL)canInstallFeed:(DHFeed *)feed
         title = @"Apple API Reference";
         message = @"To install the Apple API Reference docset you need to:\n\n1. Use Dash for macOS to install the Apple API Reference docset from Preferences > Downloads\n2. Go to Preferences > Docsets, right click the Apple API Reference docset and select \"Generate iOS Compatible Docset\"\n3. Transfer the resulting docset using iTunes File Sharing";
     }
+    else if([feed.feedURL isEqualToString:@"http://kapeli.com/feeds/Swift.xml"])
+    {
+        title = @"Apple API Reference";
+        message = @"There is no Swift docset. The documentation for Swift can be found inside the Apple API Reference docset. Install it instead.";
+    }
     else if([@[@"http://kapeli.com/feeds/OS_X.xml", @"http://kapeli.com/feeds/macOS.xml", @"http://kapeli.com/feeds/watchOS.xml", @"http://kapeli.com/feeds/iOS.xml", @"http://kapeli.com/feeds/tvOS.xml"] containsObject:feed.feedURL])
     {
         title = @"Apple API Reference";