diff --git a/recursion-schemes-ext.cabal b/recursion-schemes-ext.cabal
--- a/recursion-schemes-ext.cabal
+++ b/recursion-schemes-ext.cabal
@@ -1,5 +1,5 @@
 name:                recursion-schemes-ext
-version:             1.0.0.1
+version:             1.0.0.2
 synopsis:            Amateur addenda to recursion-schemes
 description:         This package provides some exotic recursion schemes as well monadic versions of some morphisms.
 homepage:            https://hub.darcs.net/vmchale/recursion-schemes-ext#readme
diff --git a/src/Data/Functor/Foldable/Exotic.hs b/src/Data/Functor/Foldable/Exotic.hs
--- a/src/Data/Functor/Foldable/Exotic.hs
+++ b/src/Data/Functor/Foldable/Exotic.hs
@@ -32,6 +32,7 @@
 import           Control.Arrow
 import           Control.Composition
 import           Control.Lens
+import           Control.Monad
 import           Data.Functor.Foldable
 
 dock :: (Eq a) => [a] -> a