--- contravariant-0.5.2/contravariant.cabal~	2014-05-06 05:47:25.000000000 +0900
+++ contravariant-0.5.2/contravariant.cabal	2014-07-04 18:34:57.683810422 +0900
@@ -25,8 +25,7 @@
   build-depends:
     base                            < 5,
     tagged              >= 0.4.4 && < 1,
-    transformers        >= 0.2   && < 0.5,
-    transformers-compat >= 0.3   && < 1
+    transformers        >= 0.2   && < 0.5
 
   if impl(ghc >= 7.4 && < 7.6)
     build-depends: ghc-prim