diff --git a/Monadius.cabal b/Monadius.cabal
--- a/Monadius.cabal
+++ b/Monadius.cabal
@@ -1,5 +1,5 @@
 name:                Monadius
-version:             0.92
+version:             0.93
 
 license:             GPL
 license-file:        LICENSE
@@ -15,7 +15,7 @@
                      The Darcs repo is available at <http://code.haskell.org/monadius/>.
 homepage:            http://www.geocities.jp/takascience/haskell/monadius_en.html
 
-build-depends:       base>3, array, directory, GLUT, OpenGL
+build-depends:       base<4, array, directory, GLUT, OpenGL
 build-type:          Simple
 data-files:          readme-e.txt, readme-j.txt
 tested-with:         GHC==6.8.2