diff --git a/hruby.cabal b/hruby.cabal
--- a/hruby.cabal
+++ b/hruby.cabal
@@ -2,7 +2,7 @@
 --  see http://haskell.org/cabal/users-guide/
 
 name:                hruby
-version:             0.3.3
+version:             0.3.4
 synopsis:            Embed a Ruby intepreter in your Haskell program !
 description:         This doesn't work with Ruby 1.9. Everything you need should be in Foreign.Ruby.Safe.
 license:             BSD3
@@ -25,7 +25,7 @@
   ghc-options:          -Wall
   -- ghc-prof-options:     -caf-all -auto-all
   extensions:           BangPatterns, OverloadedStrings
-  build-depends:        base >= 4.6 && < 4.9
+  build-depends:        base >= 4.6 && < 5
                         , aeson                >= 0.7
                         , bytestring           >= 0.10.0.2
                         , text                 >= 0.11