diff --git a/test/Data/Conduit/Process/UnixSpec.hs b/test/Data/Conduit/Process/UnixSpec.hs
--- a/test/Data/Conduit/Process/UnixSpec.hs
+++ b/test/Data/Conduit/Process/UnixSpec.hs
@@ -14,6 +14,7 @@
 import Control.Concurrent (threadDelay)
 import System.Posix.Signals (sigKILL, sigTERM)
 import qualified Control.Concurrent.MVar as M
+import Data.ByteString.Lazy.Char8 ()
 
 iorefSink :: IO (Sink ByteString IO (), IO L.ByteString)
 iorefSink = do
diff --git a/unix-process-conduit.cabal b/unix-process-conduit.cabal
--- a/unix-process-conduit.cabal
+++ b/unix-process-conduit.cabal
@@ -2,7 +2,7 @@
 --  documentation, see http://haskell.org/cabal/users-guide/
 
 name:                unix-process-conduit
-version:             0.2.2.1
+version:             0.2.2.2
 synopsis:            Run processes on Unix systems, with a conduit interface
 description:         This library allows you to provide @conduit@ datatypes for the input and output streams. Note that you must compile your programs with @-threaded@.
 homepage:            https://github.com/snoyberg/conduit