diff --git a/Network/Wai/Handler/Warp/Response.hs b/Network/Wai/Handler/Warp/Response.hs
--- a/Network/Wai/Handler/Warp/Response.hs
+++ b/Network/Wai/Handler/Warp/Response.hs
@@ -55,7 +55,7 @@
 import Network.Wai.Handler.Warp.ResponseHeader
 import qualified Network.Wai.Handler.Warp.Timeout as T
 import Network.Wai.Handler.Warp.Types
-import Network.Wai.Internal
+import Network.Wai.Internal (Response (ResponseBuilder, ResponseStream, ResponseFile, ResponseRaw))
 import Numeric (showInt)
 import qualified Paths_warp
 import qualified System.PosixCompat.Files as P
diff --git a/warp.cabal b/warp.cabal
--- a/warp.cabal
+++ b/warp.cabal
@@ -1,5 +1,5 @@
 Name:                warp
-Version:             3.1.3
+Version:             3.1.3.1
 Synopsis:            A fast, light-weight web server for WAI applications.
 License:             MIT
 License-file:        LICENSE