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
@@ -7,10 +7,24 @@
 Right ["a","b","c"]
 -}
 module Text.Regex.PCRE.ByteString.Utils
-    ( substitute
+    ( -- * Perl-like utility functions
+      substitute
     , split
     , substituteCompile
     , splitCompile
+    -- * Re-exports from "Text.Regex.PCRE.ByteString"
+    , Regex
+    , CompOption
+    , ExecOption
+    , compBlank
+    , execBlank
+    -- * Pure version of the functions, using 'unsafePerformIO'
+    , compile'
+    , execute'
+    , substitute'
+    , split'
+    , substituteCompile'
+    , splitCompile'
     ) where
 
 import Text.Regex.PCRE.ByteString
@@ -20,6 +34,8 @@
 import Data.Attoparsec.ByteString.Char8 as A
 import Control.Applicative
 import Data.Char (digitToInt)
+import System.IO.Unsafe
+import qualified Data.Array as A
 
 {-| Substitutes values matched by a `Regex`. References can be used.
 
@@ -60,6 +76,19 @@
     where
         removeEmptyLeft = reverse . dropWhile BS.null . reverse
 
+-- | A pure version of 'substitute', using unsafePerformIO.
+substitute' :: Regex             -- ^ The regular expression, taken from a call to `compile`
+            -> BS.ByteString     -- ^ The source string
+            -> BS.ByteString     -- ^ The replacement string
+            -> Either String BS.ByteString
+substitute' regexp srcstring repla = unsafePerformIO (substitute regexp srcstring repla)
+
+-- | A pure version of 'split', using unsafePerformIO.
+split' :: Regex  -- ^ The regular expression, taken from a call to `compile`
+       -> BS.ByteString -- ^ The source string
+       -> Either String [BS.ByteString]
+split' regexp srcstring = unsafePerformIO (split regexp srcstring)
+
 data RegexpSplit a = Matched a
                    | Unmatched a
                    deriving (Show, Eq, Ord)
@@ -139,3 +168,24 @@
     case re of
         Right cre -> split cre srcstring
         Left rr   -> return $ Left $ "Regexp compilation failed: " ++ show rr
+
+-- | A pure version of 'compile', using unsafePerformIO.
+compile' :: CompOption -> ExecOption -> BS.ByteString -> Either (MatchOffset, String) Regex
+compile' co eo s = unsafePerformIO (compile co eo s)
+
+-- | A pure version of 'execute', using unsafePerformIO.
+execute' :: Regex -> BS.ByteString -> Either WrapError (Maybe (A.Array Int (MatchOffset, MatchLength)))
+execute' r s = unsafePerformIO (execute r s)
+
+-- | A pure version of 'substituteCompile', using unsafePerformIO.
+substituteCompile' :: BS.ByteString     -- ^ The regular expression
+                   -> BS.ByteString     -- ^ The source string
+                   -> BS.ByteString     -- ^ The replacement string
+                   -> Either String BS.ByteString
+substituteCompile' regexp srcstring repla = unsafePerformIO (substituteCompile regexp srcstring repla)
+
+-- | A pure version of 'splitCompile', using unsafePerformIO.
+splitCompile' :: BS.ByteString -- ^ The regular expression
+              -> BS.ByteString -- ^ The source string
+              -> Either String [BS.ByteString]
+splitCompile' regexp srcstring = unsafePerformIO (splitCompile regexp srcstring)
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:             0.1.2
+version:             0.1.3
 synopsis:            Perl-like substitute and split for PCRE regexps.
 description:         This package introduces split and replace like functions using PCRE regexps.
 license:             BSD3
@@ -25,7 +25,7 @@
   ghc-options:         -Wall
   ghc-prof-options:    -caf-all -auto-all
   extensions:          OverloadedStrings, BangPatterns
-  build-depends:       base >= 4.6 && < 4.8, regex-pcre-builtin == 0.94.4.6.8.34, bytestring, attoparsec, mtl, vector
+  build-depends:       base >= 4.6 && < 4.8, regex-pcre-builtin >= 0.94.4.8, bytestring, attoparsec, mtl, vector, array
 
 Test-Suite test-split
     hs-source-dirs: test