diff --git a/model.cabal b/model.cabal
--- a/model.cabal
+++ b/model.cabal
@@ -1,5 +1,5 @@
 name:                model
-version:             0.4
+version:             0.4.1
 synopsis:            Derive a model of a data type using Generics
 description:         See the <http://github.com/tittoassini/model online tutorial>.
 homepage:            http://github.com/tittoassini/model
diff --git a/src/Data/Model/Util.hs b/src/Data/Model/Util.hs
--- a/src/Data/Model/Util.hs
+++ b/src/Data/Model/Util.hs
@@ -3,8 +3,8 @@
 {-# LANGUAGE NoMonomorphismRestriction #-}
 {-# LANGUAGE TypeSynonymInstances      #-}
 module Data.Model.Util
-    -- * Dependencies
-  ( properMutualGroups
+  ( -- * Dependencies
+    properMutualGroups
   , mutualGroups
   , transitiveClosure
   -- * Error utilities