diff --git a/XMonadContrib.cabal b/XMonadContrib.cabal
index dc3b0a1b..a17eab65 100644
--- a/XMonadContrib.cabal
+++ b/XMonadContrib.cabal
@@ -24,7 +24,7 @@ library
     else
         build-depends: base < 3
 
-    build-depends:      mtl, unix, X11==1.3.0, xmonad==0.4
+    build-depends:      mtl, unix, X11==1.3.0.20071111, xmonad==0.4
     ghc-options:        -Wall -Werror
     exposed-modules:    XMonad.Actions.Commands
                         XMonad.Actions.ConstrainedResize