diff --git a/Graphics/Ubigraph/Base.hs b/Graphics/Ubigraph/Base.hs
--- a/Graphics/Ubigraph/Base.hs
+++ b/Graphics/Ubigraph/Base.hs
@@ -62,6 +62,10 @@
            | EStroke Stroke
            | EWidth Float -- default: 1.0
            | EArrow Bool -- default: false
+           | EArrowPosition Float -- default 0.5
+           | EArrowRadius Float -- default 1.0
+           | EArrowLength Float -- default 1.0
+           | EArrowReverse Bool -- default false
            | EShowstrain Bool -- default: false
            | EVisible Bool
 
@@ -91,6 +95,10 @@
     toPair (EStroke st)   = ("stroke", show st)
     toPair (EWidth f)     = ("width", show f)
     toPair (EArrow b)     = ("arrow", show b)
+    toPair (EArrowPosition f)     = ("arrow_position", show f)
+    toPair (EArrowRadius f)     = ("arrow_radius", show f)
+    toPair (EArrowLength f)     = ("arrow_length", show f)
+    toPair (EArrowReverse b)     = ("arrow_reverse", show b)
     toPair (EShowstrain b)= ("showstrain", show b)
     toPair (EVisible b)   = ("visible", show b)
 
diff --git a/hubigraph.cabal b/hubigraph.cabal
--- a/hubigraph.cabal
+++ b/hubigraph.cabal
@@ -1,13 +1,13 @@
 name:                hubigraph
-version:             0.3.1
+version:             0.3.2
 homepage:            http://ooxo.org/hubigraph/
 synopsis:            A haskell wrap for Ubigraph
 description:         Hubigraph is a Haskell wrapper for Ubigraph, which is a tool for visualizing dynamic graphs.
 category:            Graphics
 license:             BSD3
 license-file:        LICENSE
-author:              Kohei Ozaki
-maintainer:          Kohei Ozaki <eowner@gmail.com>
+author:              Kohei Ozaki <eowner@gmail.com>
+maintainer:          Matei Tene <matei.tene@cti.pub.ro>
 cabal-version:       >= 1.2
 build-type:          Simple
 stability:           experimental