diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,4 @@
-2017-02-23  Facundo Domínguez <facundo.dominguez@tweag.io> 0.5
+2017-02-23  Facundo Domínguez <facundo.dominguez@tweag.io> 0.5.1
 
 * Add {encode|decode}{Word|Enum|Num}{32|16}.
 * Removed {encode|decode}Int{32|16}
diff --git a/network-transport.cabal b/network-transport.cabal
--- a/network-transport.cabal
+++ b/network-transport.cabal
@@ -1,5 +1,5 @@
 Name:          network-transport
-Version:       0.5
+Version:       0.5.1
 Cabal-Version: >=1.6
 Build-Type:    Simple
 License:       BSD3
diff --git a/src/Network/Transport/Internal.hs b/src/Network/Transport/Internal.hs
--- a/src/Network/Transport/Internal.hs
+++ b/src/Network/Transport/Internal.hs
@@ -37,6 +37,7 @@
   , inlinePerformIO
   )
 import Data.Word (Word32, Word16)
+import Control.Applicative ((<$>))
 import Control.Monad.IO.Class (MonadIO, liftIO)
 import Control.Exception
   ( IOException