diff --git a/Network/Wai/Handler/Launch.hs b/Network/Wai/Handler/Launch.hs
--- a/Network/Wai/Handler/Launch.hs
+++ b/Network/Wai/Handler/Launch.hs
@@ -140,7 +140,7 @@
     _ <- forkIO $ Warp.runSettings Warp.defaultSettings
         { Warp.settingsPort = port
         , Warp.settingsOnException = const $ return ()
-        , Warp.settingsHost = "127.0.0.1"
+        , Warp.settingsHost = "*4"
         } $ ping x app
     launch port url
     loop x
diff --git a/wai-handler-launch.cabal b/wai-handler-launch.cabal
--- a/wai-handler-launch.cabal
+++ b/wai-handler-launch.cabal
@@ -1,5 +1,5 @@
 Name:                wai-handler-launch
-Version:             1.3.1
+Version:             1.3.1.1
 Synopsis:            Launch a web app in the default browser.
 Description:         This handles cross-platform launching and inserts Javascript code to ping the server. When the server no longer receives pings, it shuts down.
 License:             MIT