diff --git a/vivid.cabal b/vivid.cabal
--- a/vivid.cabal
+++ b/vivid.cabal
@@ -1,5 +1,5 @@
 name:                vivid
-version:             0.3.0.0
+version:             0.3.0.1
 synopsis:            Sound synthesis with SuperCollider
 description:         
   Music and sound synthesis with SuperCollider.
@@ -7,7 +7,7 @@
   Example usage:
   .
   @
-  {-\# LANGUAGE DataKinds \#-}
+  {-\# LANGUAGE DataKinds, ExtendedDefaultRules \#-}
   @
   .
   > import Vivid