diff --git a/Criterion/IO.hs b/Criterion/IO.hs
--- a/Criterion/IO.hs
+++ b/Criterion/IO.hs
@@ -23,6 +23,7 @@
 import Data.Binary (Binary(..), encode)
 import Data.Binary.Get (runGetOrFail)
 import Data.Binary.Put (putByteString, putWord16be, runPut)
+import Data.ByteString.Char8 ()
 import Data.Version (Version(..))
 import Paths_criterion (version)
 import System.IO (Handle, IOMode(..), withFile)
diff --git a/Criterion/Report.hs b/Criterion/Report.hs
--- a/Criterion/Report.hs
+++ b/Criterion/Report.hs
@@ -44,8 +44,10 @@
 import Text.Hastache (MuType(..))
 import Text.Hastache.Context (mkGenericContext, mkStrContext, mkStrContextM)
 import qualified Control.Exception as E
-import qualified Data.ByteString.Char8 as B
-import qualified Data.ByteString.Lazy as L
+import qualified Data.Text as T
+import qualified Data.Text.IO as T
+import qualified Data.Text.Lazy as TL
+import qualified Data.Text.Lazy.IO as TL
 import qualified Data.Vector.Generic as G
 import qualified Data.Vector.Unboxed as U
 import qualified Text.Hastache as H
@@ -73,13 +75,13 @@
     Last Nothing -> return ()
     Last (Just name) -> liftIO $ do
       tpl <- loadTemplate [".",templateDir] (fromLJ cfgTemplate cfg)
-      L.writeFile name =<< formatReport reports tpl
+      TL.writeFile name =<< formatReport reports tpl
 
 -- | Format a series of 'Report' values using the given Hastache
 -- template.
 formatReport :: [Report]
-             -> B.ByteString    -- ^ Hastache template.
-             -> IO L.ByteString
+             -> T.Text    -- ^ Hastache template.
+             -> IO TL.Text
 formatReport reports template = do
   let context "report"  = return $ MuList $ map inner reports
       context "include" = return $ MuLambdaM $ includeFile [templateDir]
@@ -153,13 +155,13 @@
 -- \"@/etc/passwd@\".
 includeFile :: (MonadIO m) =>
                [FilePath]       -- ^ Directories to search.
-            -> B.ByteString     -- ^ Name of the file to search for.
-            -> m B.ByteString
-{-# SPECIALIZE includeFile :: [FilePath] -> B.ByteString -> IO B.ByteString #-}
-includeFile searchPath name = liftIO $ foldr go (return B.empty) searchPath
+            -> T.Text          -- ^ Name of the file to search for.
+            -> m T.Text
+{-# SPECIALIZE includeFile :: [FilePath] -> T.Text -> IO T.Text #-}
+includeFile searchPath name = liftIO $ foldr go (return T.empty) searchPath
     where go dir next = do
             let path = dir </> H.decodeStr name
-            B.readFile path `E.catch` \(_::IOException) -> next
+            T.readFile path `E.catch` \(_::IOException) -> next
 
 -- | A problem arose with a template.
 data TemplateException =
@@ -177,15 +179,15 @@
 -- not be found, or an 'IOException' if no template could be loaded.
 loadTemplate :: [FilePath]      -- ^ Search path.
              -> FilePath        -- ^ Name of template file.
-             -> IO B.ByteString
+             -> IO T.Text
 loadTemplate paths name
-    | any isPathSeparator name = B.readFile name
+    | any isPathSeparator name = T.readFile name
     | otherwise                = go Nothing paths
   where go me (p:ps) = do
           let cur = p </> name
           x <- doesFileExist cur
           if x
-            then B.readFile cur `E.catch` \e -> go (me `mplus` Just e) ps
+            then T.readFile cur `E.catch` \e -> go (me `mplus` Just e) ps
             else go me ps
         go (Just e) _ = throwIO (e::IOException)
         go _        _ = throwIO . TemplateNotFound $ name
diff --git a/criterion.cabal b/criterion.cabal
--- a/criterion.cabal
+++ b/criterion.cabal
@@ -1,5 +1,5 @@
 name:           criterion
-version:        0.8.0.1
+version:        0.8.0.2
 synopsis:       Robust, reliable performance measurement and analysis
 license:        BSD3
 license-file:   LICENSE
@@ -65,11 +65,12 @@
     directory,
     filepath,
     Glob >= 0.7.2,
-    hastache >= 0.5.0,
+    hastache >= 0.6.0,
     mtl >= 2,
     mwc-random >= 0.8.0.3,
     parsec >= 3.1.0,
     statistics >= 0.10.4.0 && < 0.11.0.0,
+    text >= 0.11,
     time,
     transformers,
     vector >= 0.7.1,