diff -ru orig/vault.cabal new/vault.cabal
--- orig/vault.cabal	2013-09-01 18:35:14.861603037 +0300
+++ new/vault.cabal	2013-09-01 18:35:14.000000000 +0300
@@ -36,7 +36,8 @@
     
 Library
     hs-source-dirs:     src
-    build-depends:      base == 4.6.*, containers == 0.5.*,
+    build-depends:      base >= 4.5 && < 4.7,
+                        containers >= 0.4 && < 0.6,
                         unordered-containers >= 0.2.3.0 && < 0.3,
                         hashable >= 1.1.2.5 && < 1.3