diff --git a/GUI/SaveAs.hs b/GUI/SaveAs.hs
--- a/GUI/SaveAs.hs
+++ b/GUI/SaveAs.hs
@@ -10,6 +10,20 @@
 -- Imports for GTK
 import Graphics.UI.Gtk
 import Graphics.Rendering.Cairo
+  ( Render
+  , Operator(..)
+  , Format(..)
+  , rectangle
+  , getOperator
+  , setOperator
+  , fill
+  , translate
+  , liftIO
+  , withPDFSurface
+  , renderWith
+  , withImageSurface
+  , surfaceWriteToPNG
+  )
 
 saveAs :: HECs -> ViewParameters -> Double -> DrawingArea
        -> (Int, Int, Render ())
diff --git a/GUI/Timeline.hs b/GUI/Timeline.hs
--- a/GUI/Timeline.hs
+++ b/GUI/Timeline.hs
@@ -34,7 +34,7 @@
 import Events.HECs
 
 import Graphics.UI.Gtk
-import Graphics.Rendering.Cairo
+import Graphics.Rendering.Cairo ( liftIO )
 
 import Data.IORef
 import Control.Monad
diff --git a/GUI/Timeline/Render.hs b/GUI/Timeline/Render.hs
--- a/GUI/Timeline/Render.hs
+++ b/GUI/Timeline/Render.hs
@@ -22,6 +22,31 @@
 
 import Graphics.UI.Gtk
 import Graphics.Rendering.Cairo
+  ( Render
+  , Content(..)
+  , Operator(..)
+  , Surface
+  , liftIO
+  , withTargetSurface
+  , createSimilarSurface
+  , renderWith
+  , surfaceFinish
+  , clip
+  , setSourceSurface
+  , setOperator
+  , paint
+  , setLineWidth
+  , moveTo
+  , lineTo
+  , stroke
+  , rectangle
+  , fill
+  , save
+  , scale
+  , translate
+  , restore
+  , setSourceRGBA
+  )
 
 import Data.IORef
 import Control.Monad
diff --git a/threadscope.cabal b/threadscope.cabal
--- a/threadscope.cabal
+++ b/threadscope.cabal
@@ -1,5 +1,5 @@
 Name:                threadscope
-Version:             0.2.2
+Version:             0.2.3
 Category:            Development, Profiling, Trace
 Synopsis:            A graphical tool for profiling parallel Haskell programs.
 Description:         ThreadScope is a graphical viewer for thread profile
@@ -35,8 +35,8 @@
 Data-files:          threadscope.ui, threadscope.png
 
 source-repository head
-  type:     darcs
-  location: http://code.haskell.org/ThreadScope/
+  type:     git
+  location: git@github.com:haskell/ThreadScope.git
 
 Executable threadscope
   Main-is:           Main.hs
@@ -92,4 +92,4 @@
      ghc-options:  -fno-warn-unused-matches
 
   if !os(windows)
-     build-depends: unix >= 2.3 && < 2.7
+     build-depends: unix >= 2.3 && < 2.8