diff --git a/Text/Regex/PCRE/ByteString/Utils.hs b/Text/Regex/PCRE/ByteString/Utils.hs
--- a/Text/Regex/PCRE/ByteString/Utils.hs
+++ b/Text/Regex/PCRE/ByteString/Utils.hs
@@ -29,7 +29,7 @@
 
 import Text.Regex.PCRE.ByteString
 import qualified Data.ByteString.Char8 as BS
-import Control.Monad.Error
+import Control.Monad.Except
 import qualified Data.Vector as V
 import Data.Attoparsec.ByteString.Char8 as A
 import Control.Applicative
@@ -46,7 +46,7 @@
            -> BS.ByteString     -- ^ The source string
            -> BS.ByteString     -- ^ The replacement string
            -> IO (Either String BS.ByteString)
-substitute regexp srcstring repla = runErrorT $ do
+substitute regexp srcstring repla = runExceptT $ do
     parsedReplacement <- case parseOnly repparser repla of
                              Right y -> return y
                              Left rr -> throwError (rr ++ " when parsing the replacement string")
@@ -76,7 +76,7 @@
 split :: Regex  -- ^ The regular expression, taken from a call to `compile`
       -> BS.ByteString -- ^ The source string
       -> IO (Either String [BS.ByteString])
-split regexp srcstring = either Left (Right . removeEmptyLeft . regexpUnmatched . fst) <$> runErrorT (getMatches regexp srcstring V.empty)
+split regexp srcstring = fmap (removeEmptyLeft . regexpUnmatched . fst) <$> runExceptT (getMatches regexp srcstring V.empty)
     where
         removeEmptyLeft = reverse . dropWhile BS.null . reverse
 
@@ -114,7 +114,7 @@
 regexpUnmatched :: [RegexpSplit a] -> [a]
 regexpUnmatched = regexpAll . filter (not . isMatched)
 
-getMatches :: Regex -> BS.ByteString -> V.Vector BS.ByteString -> ErrorT String IO ([RegexpSplit BS.ByteString], V.Vector BS.ByteString)
+getMatches :: Regex -> BS.ByteString -> V.Vector BS.ByteString -> ExceptT String IO ([RegexpSplit BS.ByteString], V.Vector BS.ByteString)
 getMatches _ "" curcaptures  = return ([], curcaptures)
 getMatches creg src curcaptures = do
     x <- liftIO $ regexec creg src
diff --git a/pcre-utils.cabal b/pcre-utils.cabal
--- a/pcre-utils.cabal
+++ b/pcre-utils.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                pcre-utils
-version:             0.1.5
+version:             0.1.6
 synopsis:            Perl-like substitute and split for PCRE regexps.
 description:         This package introduces split and replace like functions using PCRE regexps.
 license:             BSD3
@@ -23,7 +23,7 @@
   exposed-modules:     Text.Regex.PCRE.ByteString.Utils
   -- other-modules:       
   ghc-options:         -Wall
-  -- ghc-prof-options:    -caf-all -auto-all
+  ghc-prof-options:    -caf-all -auto-all
   extensions:          OverloadedStrings, BangPatterns
   build-depends:       base >= 4.6 && < 4.9, regex-pcre-builtin >= 0.94.4.8, bytestring, attoparsec, mtl, vector, array