diff --git a/representable-tries.cabal b/representable-tries.cabal
--- a/representable-tries.cabal
+++ b/representable-tries.cabal
@@ -1,6 +1,6 @@
 name:          representable-tries
 category:      Data Structures, Functors, Monads, Comonads
-version:       2.0
+version:       2.0.0.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -19,7 +19,7 @@
 
 library
   build-depends: 
-    base >= 4 && < 4.4,
+    base >= 4 && < 5,
     bifunctors >= 0.1.1 && < 0.2,
     comonad >= 1.1 && < 1.2,
     containers >= 0.3 && < 0.5,