diff --git a/doctest.cabal b/doctest.cabal
--- a/doctest.cabal
+++ b/doctest.cabal
@@ -1,5 +1,5 @@
 name:             doctest
-version:          0.9.4
+version:          0.9.4.1
 synopsis:         Test interactive Haskell examples
 description:      The doctest program checks examples in source code comments.
                   It is modeled after doctest for Python
@@ -46,13 +46,13 @@
     , Util
   build-depends:
       base          == 4.*
-    , ghc           >= 6.12 && < 7.8
-    , syb
+    , ghc           >= 7.0 && < 7.8
+    , syb           >= 0.3 && < 0.4
     , deepseq
     , directory
     , filepath
     , process
-    , ghc-paths     == 0.1.*
+    , ghc-paths     >= 0.1.0.9
     , transformers
 
 executable doctest
diff --git a/src/Extract.hs b/src/Extract.hs
--- a/src/Extract.hs
+++ b/src/Extract.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE CPP, DeriveDataTypeable, StandaloneDeriving, DeriveFunctor #-}
+{-# LANGUAGE CPP, DeriveDataTypeable, DeriveFunctor #-}
 module Extract (Module(..), extract) where
 
 import           Prelude hiding (mod, concat)
@@ -57,8 +57,6 @@
 , moduleSetup   :: Maybe a
 , moduleContent :: [a]
 } deriving (Eq, Functor)
-
-deriving instance Show a => Show (Module a)
 
 instance NFData a => NFData (Module a) where
   rnf (Module name setup content) = name `deepseq` setup `deepseq` content `deepseq` ()
diff --git a/src/Report.hs b/src/Report.hs
--- a/src/Report.hs
+++ b/src/Report.hs
@@ -114,14 +114,14 @@
 
   Summary _ _ e1 f1 <- gets reportStateSummary
 
-  -- only run tests, if seutp does not produce any errors/failures
+  -- only run tests, if setup does not produce any errors/failures
   when (e0 == e1 && f0 == f1) $
     forM_ examples $
       runTestGroup repl setup_
   where
     reload :: IO ()
     reload = do
-      -- NOTE: It is important do the :reload first!  There was some odd bug
+      -- NOTE: It is important to do the :reload first!  There was some odd bug
       -- with a previous version of GHC (7.4.1?).
       void $ Interpreter.eval repl   ":reload"
       void $ Interpreter.eval repl $ ":m *" ++ module_