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
@@ -60,7 +60,7 @@
 toInsert :: S.ByteString
 toInsert = "<script>setInterval(function(){var x;if(window.XMLHttpRequest){x=new XMLHttpRequest();}else{x=new ActiveXObject(\"Microsoft.XMLHTTP\");}x.open(\"GET\",\"/_ping\",false);x.send();},60000)</script>"
 
-insideHead :: C.Conduit (C.Flush S.ByteString) IO (C.Flush S.ByteString)
+insideHead :: C.Conduit (C.Flush S.ByteString) (C.ResourceT IO) (C.Flush S.ByteString)
 insideHead =
     C.conduitState (Just (S.empty, whole)) push' close
   where
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:             1.1.0.1
+Version:             1.2.0
 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:             BSD3
@@ -13,15 +13,15 @@
 Library
     Exposed-modules: Network.Wai.Handler.Launch
     build-depends:   base                    >= 4       && < 5
-                   , wai                     >= 1.1     && < 1.2
-                   , warp                    >= 1.1     && < 1.2
+                   , wai                     >= 1.2     && < 1.3
+                   , warp                    >= 1.2     && < 1.3
                    , http-types              >= 0.6     && < 0.7
-                   , transformers            >= 0.2.2   && < 0.3
+                   , transformers            >= 0.2.2   && < 0.4
                    , bytestring              >= 0.9.1.4 && < 0.10
                    , blaze-builder           >= 0.2.1.4 && < 0.4
-                   , conduit                 >= 0.2     && < 0.3
-                   , blaze-builder-conduit   >= 0.2     && < 0.3
-                   , zlib-conduit            >= 0.2     && < 0.3
+                   , conduit                 >= 0.4     && < 0.5
+                   , blaze-builder-conduit   >= 0.4     && < 0.5
+                   , zlib-conduit            >= 0.4     && < 0.5
 
     if os(windows)
         c-sources: windows.c