diff --git a/randsolid.cabal b/randsolid.cabal
--- a/randsolid.cabal
+++ b/randsolid.cabal
@@ -1,5 +1,5 @@
 Name:                randsolid
-Version:             0.2
+Version:             0.3
 Synopsis:            Set the background of your root window to a random colour.
 Description:         Set the background of your root window to a random colour (or just print the colour).
 Category:            System
@@ -12,4 +12,4 @@
 
 Executable           randsolid
     Main-is:         Randsolid.hs
-    Build-depends:   base >= 3 && < 4, X11, random
+    Build-depends:   base >= 3 && < 5, X11, random