diff --git a/string-combinators.cabal b/string-combinators.cabal
--- a/string-combinators.cabal
+++ b/string-combinators.cabal
@@ -1,5 +1,5 @@
 Name:          string-combinators
-Version:       0.6.0.3
+Version:       0.6.0.4
 Synopsis:      Polymorphic functions to build and combine stringlike values
 Description:   @string-combinators@ provides handy polymorphic functions
                to build and combine string-like values.
@@ -25,7 +25,7 @@
   Location: git://github.com/basvandijk/string-combinators.git
 
 Library
-  Build-Depends: base                 >= 4     && < 4.6
+  Build-Depends: base                 >= 4     && < 4.7
                , base-unicode-symbols >= 0.1.1 && < 0.3
   Exposed-modules: Data.String.Combinators
   Ghc-options: -Wall