diff --git a/gearbox.cabal b/gearbox.cabal
--- a/gearbox.cabal
+++ b/gearbox.cabal
@@ -1,5 +1,5 @@
 Name:                gearbox
-Version:             1.0.0.3
+Version:             1.0.0.4
 Synopsis:            zooming rotating fractal gears graphics demo
 Description:         OpenGL gearbox iterated function system.  Usage:
                      @gearbox quality@ where quality is an integer between
@@ -24,7 +24,7 @@
   Main-is:             GearBox.hs
   Build-depends:
     base < 5,
-    GLUT == 2.6.*,
+    GLUT == 2.7.*,
     OpenGLRaw == 2.3.*,
     Vec == 1.0.*
   GHC-options:         -Wall
@@ -36,4 +36,4 @@
 Source-repository this
   type:                git
   location:            http://code.mathr.co.uk/gearbox.git
-  tag:                 v1.0.0.3
+  tag:                 v1.0.0.4