diff --git a/graph-wrapper.cabal b/graph-wrapper.cabal
--- a/graph-wrapper.cabal
+++ b/graph-wrapper.cabal
@@ -1,7 +1,7 @@
 Cabal-Version:      >= 1.2
 Build-Type:         Simple
 Name:               graph-wrapper
-Version:            0.2.4.1
+Version:            0.2.4.2
 Maintainer:         Max Bolingbroke <batterseapower@hotmail.com>
 Homepage:           http://www.github.com/batterseapower/graph-wrapper
 License:            BSD3
@@ -16,4 +16,4 @@
     
     Build-Depends:      base >= 3.0 && < 5.0,
                         array >= 0.3 && < 0.5,
-                        containers >= 0.3 && < 0.5
+                        containers >= 0.3 && < 0.6