diff --git a/Data/GraphViz/Printing.hs b/Data/GraphViz/Printing.hs
--- a/Data/GraphViz/Printing.hs
+++ b/Data/GraphViz/Printing.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE OverloadedStrings, TypeSynonymInstances #-}
+{-# LANGUAGE OverloadedStrings, TypeSynonymInstances, FlexibleInstances #-}
 
 {- |
    Module      : Data.GraphViz.Printing
diff --git a/graphviz.cabal b/graphviz.cabal
--- a/graphviz.cabal
+++ b/graphviz.cabal
@@ -1,5 +1,5 @@
 Name:               graphviz
-Version:            2999.12.0.0
+Version:            2999.12.0.1
 Stability:          Beta
 Synopsis:           Bindings to Graphviz for graph visualisation.
 Description: {