diff --git a/Network/Wai/Handler/Warp/Timeout.hs b/Network/Wai/Handler/Warp/Timeout.hs
--- a/Network/Wai/Handler/Warp/Timeout.hs
+++ b/Network/Wai/Handler/Warp/Timeout.hs
@@ -21,7 +21,7 @@
 #if MIN_VERSION_base(4,6,0)
 import Control.Concurrent (mkWeakThreadId, ThreadId)
 #else
-import Control.Concurrent (ThreadId(..))
+import GHC.Conc (ThreadId(..))
 import GHC.Exts (mkWeak#)
 import GHC.IO (IO (IO))
 #endif
diff --git a/warp.cabal b/warp.cabal
--- a/warp.cabal
+++ b/warp.cabal
@@ -1,5 +1,5 @@
 Name:                warp
-Version:             1.3.10
+Version:             1.3.10.1
 Synopsis:            A fast, light-weight web server for WAI applications.
 License:             MIT
 License-file:        LICENSE