diff --git a/twentefp-rosetree.cabal b/twentefp-rosetree.cabal
--- a/twentefp-rosetree.cabal
+++ b/twentefp-rosetree.cabal
@@ -1,5 +1,5 @@
 name:                twentefp-rosetree
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            RoseTree type and show functions for lab assignment of University of Twente.        
 license:             BSD3
 license-file:        LICENSE
@@ -12,7 +12,7 @@
   exposed-modules:     RoseTree
    
   build-depends:       
-        base >=4.7 && <4.8, 
+        base >=4.6 && <5, 
         twentefp-number >= 0.1.0.1, 
         twentefp-eventloop-graphics == 0.1.0.0