diff --git a/Data/Conduit/Internal.hs b/Data/Conduit/Internal.hs
--- a/Data/Conduit/Internal.hs
+++ b/Data/Conduit/Internal.hs
@@ -127,9 +127,6 @@
 instance MonadIO m => MonadIO (Pipe l i o u m) where
     liftIO = lift . liftIO
 
-instance MonadUnsafeIO m => MonadUnsafeIO (Pipe l i o u m) where
-    unsafeLiftIO = lift . unsafeLiftIO
-
 instance MonadThrow m => MonadThrow (Pipe l i o u m) where
     monadThrow = lift . monadThrow
 
@@ -139,6 +136,9 @@
 instance Monad m => Monoid (Pipe l i o u m ()) where
     mempty = return ()
     mappend = (>>)
+
+instance MonadResource m => MonadResource (Pipe l i o u m) where
+    liftResourceT = lift . liftResourceT
 
 -- | Provides a stream of output values, without consuming any input or
 -- producing a final result.
diff --git a/conduit.cabal b/conduit.cabal
--- a/conduit.cabal
+++ b/conduit.cabal
@@ -1,5 +1,5 @@
 Name:                conduit
-Version:             0.5.4.2
+Version:             0.5.5
 Synopsis:            Streaming data processing library.
 Description:
     @conduit@ is a solution to the streaming data problem, allowing for production, transformation, and consumption of streams of data in constant memory. It is an alternative to lazy I\/O which guarantees deterministic resource handling, and fits in the same general solution space as @enumerator@/@iteratee@ and @pipes@. For a brief tutorial, please see the "Data.Conduit" module.