diff --git a/ContextAlgebra.cabal b/ContextAlgebra.cabal
--- a/ContextAlgebra.cabal
+++ b/ContextAlgebra.cabal
@@ -10,7 +10,7 @@
 -- PVP summary:      +-+------- breaking API changes
 --                   | | +----- non-breaking API additions
 --                   | | | +--- code changes with no API change
-version:             0.2.0.0
+version:             0.2.0.1
 
 -- A short (one-line) description of the package.
 synopsis:            Context Algebra
@@ -57,7 +57,7 @@
   other-extensions:    FlexibleContexts, FlexibleInstances, MultiParamTypeClasses, TypeSynonymInstances, DeriveGeneric, InstanceSigs, UndecidableInstances
   
   -- Other library packages from which modules are imported.
-  build-depends:       base >=4.7 && <4.8, containers >=0.5 && <0.6,lattices ==1.3.*, multiset ==0.3.*
+  build-depends:       base >=4.7 && <5, containers >=0.5 && <0.6,lattices ==1.3.*, multiset ==0.3.*
   
   -- Directories containing source files.
   hs-source-dirs:      src