diff --git a/mmorph.cabal b/mmorph.cabal
--- a/mmorph.cabal
+++ b/mmorph.cabal
@@ -1,5 +1,5 @@
 Name: mmorph
-Version: 1.0.7
+Version: 1.0.8
 Cabal-Version: >= 1.8.0.2
 Build-Type: Simple
 License: BSD3
diff --git a/src/Control/Monad/Morph.hs b/src/Control/Monad/Morph.hs
--- a/src/Control/Monad/Morph.hs
+++ b/src/Control/Monad/Morph.hs
@@ -107,11 +107,7 @@
     {-| Lift a monad morphism from @m@ to @n@ into a monad morphism from
         @(t m)@ to @(t n)@
     -}
-#if MIN_VERSION_base(4,8,0)
-    hoist :: Functor m => (forall a . m a -> n a) -> t m b -> t n b
-#else
-    hoist :: Monad m => (forall a . m a -> n a) -> t m b -> t n b
-#endif
+    hoist :: (Monad m) => (forall a . m a -> n a) -> t m b -> t n b
 
 instance MFunctor (E.ErrorT e) where
     hoist nat m = E.ErrorT (nat (E.runErrorT m))