diff --git a/Readme.md b/Readme.md
--- a/Readme.md
+++ b/Readme.md
@@ -1,3 +1,6 @@
+[![Build Status](https://travis-ci.org/HeinrichApfelmus/vault.png)](https://travis-ci.org/HeinrichApfelmus/vault)
+
+
 *Vault* is a tiny library that provides a single data structure called *vault*.
 
 A *vault* is a type-safe, persistent storage for values of arbitrary types. Like `IORef`, I want to be able to store values of any type in it, but unlike `IORef`, I want the storage space to behave like a persistent, first-class data structure, as appropriate for a purely functional language.
diff --git a/vault.cabal b/vault.cabal
--- a/vault.cabal
+++ b/vault.cabal
@@ -1,5 +1,5 @@
 Name:               vault
-Version:            0.3.0.2
+Version:            0.3.0.3
 Synopsis:           a persistent store for values of arbitrary types
 Description:
   A /vault/ is a persistent store for values of arbitrary types.
@@ -13,6 +13,8 @@
   .
   Changelog:
   .
+  * 0.3.0.3 - Bump version of base.
+  .
   * 0.3.0.2 - Fix tarball.
   .
   * 0.3.0.1 - Use CPP to reduce code duplication.
@@ -47,7 +49,7 @@
 
 Library
     hs-source-dirs:     src
-    build-depends:      base >= 4.5 && < 4.7,
+    build-depends:      base >= 4.5 && < 4.8,
                         containers >= 0.4 && < 0.6,
                         unordered-containers >= 0.2.3.0 && < 0.3,
                         hashable >= 1.1.2.5 && < 1.3