diff --git a/data-memocombinators.cabal b/data-memocombinators.cabal
--- a/data-memocombinators.cabal
+++ b/data-memocombinators.cabal
@@ -1,7 +1,7 @@
 Name: data-memocombinators
 Description:
     Combinators for building memo tables.
-Version: 0.4.2
+Version: 0.4.3
 Stability: experimental
 Synopsis: Combinators for building memo tables.
 License: BSD3
@@ -10,6 +10,6 @@
 Homepage: http://github.com/luqui/data-memocombinators
 Maintainer: lrpalmer@gmail.com
 Build-Type: Simple
-Build-Depends: base >= 3 && < 4.5, array, data-inttrie
+Build-Depends: base >= 3 && < 5, array, data-inttrie
 Exposed-Modules: Data.MemoCombinators
 Extensions: Rank2Types, ScopedTypeVariables