diff --git a/Criterion/Plot.hs b/Criterion/Plot.hs
--- a/Criterion/Plot.hs
+++ b/Criterion/Plot.hs
@@ -2,7 +2,7 @@
 
 -- |
 -- Module      : Criterion.Plot
--- Copyright   : (c) 2009, 2010 Bryan O'Sullivan
+-- Copyright   : (c) 2009, 2010, 2011 Bryan O'Sullivan
 --
 -- License     : BSD-style
 -- Maintainer  : bos@serpentine.com
@@ -18,29 +18,32 @@
     , plotWith
     ) where
 
-import Control.Monad (void)
 import Control.Monad.Trans (liftIO)
 import Criterion.Config
+import Criterion.IO (printError)
 import Criterion.Monad (Criterion, getConfigItem)
-import qualified Data.Vector.Unboxed as U
 import Data.Char (isSpace, toLower)
 import Data.Foldable (forM_)
 import Data.List (group, intersperse)
-import Statistics.KernelDensity (Points, fromPoints)
 import Statistics.Function (indexed)
+import Statistics.KernelDensity (Points, fromPoints)
 import Statistics.Types (Sample)
 import System.FilePath (pathSeparator)
 import System.IO (IOMode(..), Handle, hPutStr, withBinaryFile)
 import Text.Printf (printf)
 import qualified Criterion.MultiMap as M
-import Criterion.IO (printError)
+import qualified Data.Vector.Unboxed as U
 
 #ifdef HAVE_CHART
+# if MIN_VERSION_base(4,3,0)
+import Control.Monad (void)
+# endif
+
 import Data.Accessor ((^=))
 import Graphics.Rendering.Chart hiding (Plot,c)
-#ifdef HAVE_GTK
+# ifdef HAVE_GTK
 import Graphics.Rendering.Chart.Gtk (renderableToWindow)
-#endif
+# endif
 #endif
 
 plotWith :: Plot -> (PlotOutput -> IO ()) -> Criterion ()
@@ -222,3 +225,8 @@
        . map (replace isSpace '-' . replace (==pathSeparator) '-' . toLower)
     where replace p r c | p c       = r
                         | otherwise = c
+
+#if defined(HAVE_CHART) && !MIN_VERSION_base(4,3,0)
+void :: (Monad m) => m a -> m ()
+void f = f >> return ()
+#endif
diff --git a/criterion.cabal b/criterion.cabal
--- a/criterion.cabal
+++ b/criterion.cabal
@@ -1,11 +1,11 @@
 name:           criterion
-version:        0.5.0.8
+version:        0.5.0.9
 synopsis:       Robust, reliable performance measurement and analysis
 license:        BSD3
 license-file:   LICENSE
 author:         Bryan O'Sullivan <bos@serpentine.com>
 maintainer:     Bryan O'Sullivan <bos@serpentine.com>
-copyright:      2009-2010 Bryan O'Sullivan
+copyright:      2009, 2010, 2011 Bryan O'Sullivan
 category:       Development, Performance, Testing
 homepage:       http://bitbucket.org/bos/criterion
 bug-reports:    http://bitbucket.org/bos/criterion/issues
@@ -58,7 +58,6 @@
     filepath,
     mtl,
     mwc-random >= 0.8.0.3,
-    parallel,
     parsec >= 3.1.0,
     statistics >= 0.8.0.5,
     time,
@@ -73,9 +72,6 @@
 
   if flag(gtk)
     cpp-options: -DHAVE_GTK
-
-  -- gather extensive profiling data for now
-  ghc-prof-options: -auto-all
 
   ghc-options: -Wall -funbox-strict-fields
   if impl(ghc >= 6.8)