diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,10 @@
 # Revision history for streaming-sort
 
+## 0.1.0.2 -- 2018-03-23
+
+* Remove extraneous constraints in `Streaming.Sort.Lifted` (`Withable`
+  implies `MonadMask` and `MonadIO`).
+
 ## 0.1.0.1 -- 2018-03-23
 
 * Remove accidental `Ord a` constraint on `withFileSortBy` in
diff --git a/src/Streaming/Sort/Lifted.hs b/src/Streaming/Sort/Lifted.hs
--- a/src/Streaming/Sort/Lifted.hs
+++ b/src/Streaming/Sort/Lifted.hs
@@ -37,7 +37,7 @@
                                  sortBy, sortOn, useDirectory)
 import qualified Streaming.Sort as SS
 
-import Control.Monad.Catch    (MonadMask, MonadThrow)
+import Control.Monad.Catch    (MonadThrow)
 import Control.Monad.IO.Class (MonadIO)
 import Data.Binary            (Binary)
 import Streaming.Prelude      (Of, Stream)
@@ -70,9 +70,7 @@
 --   These files are stored inside the specified directory if
 --   provided; if no such directory is provided then the system
 --   temporary directory is used.
-withFileSort :: (Ord a, Binary a
-                , Withable w, MonadMask (WithMonad w), MonadIO (WithMonad w)
-                , MonadThrow m, MonadIO m)
+withFileSort :: (Ord a, Binary a, Withable w, MonadThrow m, MonadIO m)
                 => Config -> Stream (Of a) (WithMonad w) v
                 -> w (Stream (Of a) m ())
 withFileSort cfg str = liftWith (SS.withFileSort cfg str)
@@ -84,9 +82,7 @@
 --   These files are stored inside the specified directory if
 --   provided; if no such directory is provided then the system
 --   temporary directory is used.
-withFileSortBy :: (Binary a, Withable w
-                  , MonadMask (WithMonad w), MonadIO (WithMonad w)
-                  , MonadThrow m, MonadIO m)
+withFileSortBy :: (Binary a, Withable w, MonadThrow m, MonadIO m)
                   => Config -> (a -> a -> Ordering)
                   -> Stream (Of a) (WithMonad w) v
                   -> w (Stream (Of a) m ())
diff --git a/streaming-sort.cabal b/streaming-sort.cabal
--- a/streaming-sort.cabal
+++ b/streaming-sort.cabal
@@ -1,5 +1,5 @@
 name:                streaming-sort
-version:             0.1.0.1
+version:             0.1.0.2
 synopsis:            Sorting streams
 description:         Sort streaming values, using files for a cached merge-sort of long @Stream@s.
 license:             MIT