diff --git a/vector-space-map.cabal b/vector-space-map.cabal
--- a/vector-space-map.cabal
+++ b/vector-space-map.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                vector-space-map
-version:             0.2.1
+version:             0.2.1.1
 synopsis:            vector-space operations for finite maps using Data.Map
 description:         Data.Map.Vector provides @MapVector@, a wrapper around @Map@ from @containers@ which supports constant maps, i.e. maps containing only one value.  This allows an identity under intersection and an @Applicative@ instance.  It also has instances of @AdditiveGroup@, @VectorSpace@, @InnerSpace@, and @HasBasis@ with appropriate value types.  Provides operations for addition, subtraction, element-wise operations (through @Applicative@), scalar multiplication (through @VectorSpace@), and dot product.  Also consider Conal Elliott's @total-map@ package.
 homepage:            https://github.com/conklech/vector-space-map
@@ -22,12 +22,12 @@
 source-repository    this
   type:              git
   location:          git://github.com/conklech/vector-space-map.git  
-  tag:               0.2.1
+  tag:               0.2.1.1
 
 library
   hs-source-dirs:    src
   exposed-modules:   Data.Map.Vector 
-  build-depends:     base < 0.5, containers < 0.7, vector-space >= 0.5 && < 0.16
+  build-depends:     base < 5, containers < 0.7, vector-space >= 0.5 && < 0.16
 
 test-suite doctests
   type:          exitcode-stdio-1.0