diff --git a/Data/Conduit/Lazy.hs b/Data/Conduit/Lazy.hs
--- a/Data/Conduit/Lazy.hs
+++ b/Data/Conduit/Lazy.hs
@@ -1,5 +1,6 @@
 {-# LANGUAGE CPP #-}
 {-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE Trustworthy #-}
 -- | Use lazy I\/O for consuming the contents of a source. Warning: All normal
 -- warnings of lazy I\/O apply. In particular, if you are using this with a
 -- @ResourceT@ transformer, you must force the list to be evaluated before
diff --git a/conduit-extra.cabal b/conduit-extra.cabal
--- a/conduit-extra.cabal
+++ b/conduit-extra.cabal
@@ -1,5 +1,5 @@
 Name:                conduit-extra
-Version:             1.1.9.1
+Version:             1.1.9.2
 Synopsis:            Batteries included conduit: adapters for common libraries.
 Description:
     The conduit package itself maintains relative small dependencies. The purpose of this package is to collect commonly used utility functions wrapping other library dependencies, without depending on heavier-weight dependencies. The basic idea is that this package should only depend on haskell-platform packages and conduit.
diff --git a/test/Data/Conduit/ZlibSpec.hs b/test/Data/Conduit/ZlibSpec.hs
--- a/test/Data/Conduit/ZlibSpec.hs
+++ b/test/Data/Conduit/ZlibSpec.hs
@@ -14,6 +14,7 @@
 import Data.Monoid
 import qualified Data.ByteString as S
 import qualified Data.ByteString.Lazy as L
+import Data.ByteString.Char8 ()
 import Data.ByteString.Lazy.Char8 ()
 import Control.Monad.Trans.Resource (runExceptionT_)
 import Control.Monad.Trans.Class