diff --git a/README b/README
--- a/README
+++ b/README
@@ -31,7 +31,7 @@
 Please feel welcome to contribute new code or bug fixes.  You can
 fetch the source repository from here:
 
-darcs get http://darcs.serpentine.com/criterion
+http://bitbucket.org/bos/criterion
 
 
 Authors
diff --git a/criterion.cabal b/criterion.cabal
--- a/criterion.cabal
+++ b/criterion.cabal
@@ -1,5 +1,5 @@
 name:           criterion
-version:        0.5.0.3
+version:        0.5.0.4
 synopsis:       Robust, reliable performance measurement and analysis
 license:        BSD3
 license-file:   LICENSE
@@ -8,7 +8,7 @@
 copyright:      2009-2010 Bryan O'Sullivan
 category:       Development, Performance, Testing
 build-type:     Simple
-cabal-version:  >= 1.2
+cabal-version:  >= 1.6
 extra-source-files:
   README
   examples/Fibber.hs
@@ -71,3 +71,7 @@
   ghc-options: -Wall -funbox-strict-fields
   if impl(ghc >= 6.8)
     ghc-options: -fwarn-tabs
+
+source-repository head
+  type:     mercurial
+  location: http://bitbucket.org/bos/criterion