diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,4 +1,6 @@
 data-interval
 =============
 
+[![Build Status](https://secure.travis-ci.org/msakai/data-interval.png?branch=master)](http://travis-ci.org/msakai/data-interval)
+
 Interval datatype and interval arithmetic for Haskell
diff --git a/data-interval.cabal b/data-interval.cabal
--- a/data-interval.cabal
+++ b/data-interval.cabal
@@ -1,5 +1,5 @@
 Name:		data-interval
-Version:	0.4.0
+Version:	0.5.0
 License:	BSD3
 License-File:	COPYING
 Author:		Masahiro Sakai (masahiro.sakai@gmail.com)
@@ -12,6 +12,10 @@
    this package provides both open and closed intervals and is intended to be used
    with Rational.
    .
+   Changes in 0.5.0
+   .
+   * fix dependency issue with QuickCheck and test-framework-quickcheck2
+   .
    Changes in 0.4.0
    .
    * add simplestRationalWithin :: RealFrac r => Interval r -> Maybe Rational
@@ -42,7 +46,7 @@
   Type:              exitcode-stdio-1.0
   HS-Source-Dirs:    test
   Main-is:           TestInterval.hs
-  Build-depends:     base >=4 && <5, containers, data-interval, test-framework, test-framework-th, test-framework-hunit, test-framework-quickcheck2, HUnit, QuickCheck >=2 && <3
+  Build-depends:     base >=4 && <5, containers, data-interval, test-framework, test-framework-th, test-framework-hunit, test-framework-quickcheck2 >=0.2.12.3, HUnit, QuickCheck >=2.5 && <3
   Default-Language: Haskell2010
   Other-Extensions:
      TemplateHaskell