--- semigroups.cabal.orig	2015-03-07 07:26:45 UTC
+++ semigroups.cabal
@@ -86,8 +86,7 @@ library
       Data.Semigroup.Generic
 
   build-depends:
-    base >= 2   && < 5,
-    nats >= 0.1 && < 2
+    base >= 2   && < 5
 
   if impl(ghc >= 7.4 && < 7.5)
     build-depends: ghc-prim