--- contravariant-0.6/contravariant.cabal~	2014-05-12 18:03:41.000000000 +0900
+++ contravariant-0.6/contravariant.cabal	2014-07-04 17:54:32.138253457 +0900
@@ -32,8 +32,7 @@
 library
   build-depends:
     base < 5,
-    transformers >= 0.2 && < 0.5,
-    transformers-compat >= 0.3 && < 1
+    transformers >= 0.2 && < 0.5
 
   if flag(tagged) && !impl(ghc >= 7.7)
     build-depends: tagged >= 0.4.4 && < 1