diff --git a/control-monad-free.cabal b/control-monad-free.cabal
--- a/control-monad-free.cabal
+++ b/control-monad-free.cabal
@@ -1,5 +1,5 @@
 name: control-monad-free
-version: 0.6
+version: 0.6.0.1
 Cabal-Version:  >= 1.6
 build-type: Simple
 license: PublicDomain
@@ -17,6 +17,7 @@
 synopsis: Free monads and monad transformers
 category: Control, Monads
 stability: experimental
+tested-with: GHC >= 6.8
 
 source-repository head
   type:     git