diff --git a/Data/CaseInsensitive/Internal.hs b/Data/CaseInsensitive/Internal.hs
--- a/Data/CaseInsensitive/Internal.hs
+++ b/Data/CaseInsensitive/Internal.hs
@@ -40,7 +40,7 @@
 import Data.Data     ( Data )
 import Data.Typeable ( Typeable )
 import Data.Word     ( Word8 )
-import Prelude       ( String, (.), fmap, (&&), (+), (<=), (>=), otherwise )
+import Prelude       ( (.), fmap, (&&), (+), (<=), otherwise )
 import Text.Read     ( Read, readPrec )
 import Text.Show     ( Show, showsPrec )
 
@@ -165,6 +165,7 @@
 instance FoldCase TL.Text where foldCase = TL.toCaseFold
 instance FoldCase (CI s)  where foldCase (CI _ l) = CI l l
 
+{-# INLINE toLower8 #-}
 toLower8 :: Word8 -> Word8
 toLower8 w
   |  65 <= w && w <=  90 ||
@@ -176,7 +177,7 @@
 -- Rewrite RULES
 --------------------------------------------------------------------------------
 
-{-# RULES "mk/ByteString" forall (bs :: B.ByteString). mk bs = CI bs (foldCaseBS bs) #-}
+{-# RULES "foldCase/ByteString" foldCase = foldCaseBS #-}
 
 foldCaseBS :: B.ByteString -> B.ByteString
 foldCaseBS bs = B.map toLower8' bs
diff --git a/bench/bench.hs b/bench/bench.hs
--- a/bench/bench.hs
+++ b/bench/bench.hs
@@ -3,7 +3,7 @@
 
 module Main ( main) where
 
-import           Criterion.Main             ( defaultMain, bcompare, bench, nf )
+import           Criterion.Main             ( defaultMain, bench, nf )
 import qualified Data.ByteString      as B  ( readFile )
 import qualified Data.CaseInsensitive as CI ( mk )
 import qualified NoClass              as NC ( mk )
@@ -17,8 +17,6 @@
 main = do
   bs <- B.readFile "data/pg2189.txt"
   defaultMain
-    [ bcompare
-      [ bench "no-class"         $ nf (\s -> NC.mk s) bs
-      , bench "case-insensitive" $ nf (\s -> CI.mk s) bs
-      ]
+    [ bench "no-class"         $ nf (\s -> NC.mk s) bs
+    , bench "case-insensitive" $ nf (\s -> CI.mk s) bs
     ]
diff --git a/case-insensitive.cabal b/case-insensitive.cabal
--- a/case-insensitive.cabal
+++ b/case-insensitive.cabal
@@ -1,5 +1,5 @@
 name:          case-insensitive
-version:       1.2.0.0
+version:       1.2.0.1
 cabal-version: >=1.8
 build-type:    Simple
 license:       BSD3
@@ -27,7 +27,7 @@
   ghc-options: -Wall
   build-depends: base       >= 3   && < 4.8
                , bytestring >= 0.9 && < 0.11
-               , text       >= 0.3 && < 1.2
+               , text       >= 0.3 && < 1.3
                , deepseq    >= 1.1 && < 1.4
                , hashable   >= 1.0 && < 1.3
   exposed-modules: Data.CaseInsensitive, Data.CaseInsensitive.Unsafe
@@ -41,7 +41,7 @@
   build-depends: case-insensitive
                , base                 >= 3     && < 4.8
                , bytestring           >= 0.9   && < 0.11
-               , text                 >= 0.3   && < 1.2
+               , text                 >= 0.3   && < 1.3
                , HUnit                >= 1.2.2 && < 1.3
                , test-framework       >= 0.2.4 && < 0.9
                , test-framework-hunit >= 0.2.4 && < 0.4
@@ -58,5 +58,5 @@
   build-depends: case-insensitive
                , base                 >= 3     && < 4.8
                , bytestring           >= 0.9   && < 0.11
-               , criterion            >= 0.6.1 && < 0.9
+               , criterion            >= 0.6.1 && < 1.1
                , deepseq              >= 1.1   && < 1.4