diff --git a/data-lens.cabal b/data-lens.cabal
--- a/data-lens.cabal
+++ b/data-lens.cabal
@@ -1,6 +1,6 @@
 name:          data-lens
 category:      Control, Comonads
-version:       2.0.4
+version:       2.0.4.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -17,24 +17,16 @@
   type: git
   location: git://github.com/ekmett/data-lens.git
 
-flag DeriveDataTypeable
-  manual: False
-  default: True
-
 library
   build-depends:
     base                 >= 4       && < 5,
     comonad              >= 1.1.1.3 && < 1.2,
     comonad-transformers >= 2.0     && < 2.2,
-    containers           >= 0.3     && < 0.5,
+    containers           >= 0.3     && < 0.6,
     contravariant        >= 0.2.0.1 && < 0.3,
     distributive         >= 0.2.2   && < 0.3,
     semigroupoids        >= 1.2.4   && < 1.4,
     transformers         >= 0.2.0   && < 0.4
-
-  if flag(DeriveDataTypeable)
-    extensions: DeriveDataTypeable
-    cpp-options: -DLANGUAGE_DeriveDataTypeable
 
   extensions: CPP