diff --git a/changelog b/changelog
--- a/changelog
+++ b/changelog
@@ -1,6 +1,11 @@
 -*-change-log-*-
 
-V0.3.2.2 February 2016
+v0.4: February 2016
+ * Breaking change: viewbox types are no longer Int
+   but double, sneakingly passed in v0.3.2.2. This
+   version acknoweledge this change
+
+V0.3.2.2 February 2016 (Deprecated)
  * Fix: Bad serialization of some None constructors.
 
 v0.3.2.1 October 2015
diff --git a/svg-tree.cabal b/svg-tree.cabal
--- a/svg-tree.cabal
+++ b/svg-tree.cabal
@@ -1,5 +1,5 @@
 name:                svg-tree
-version:             0.3.2.2
+version:             0.4
 synopsis:            SVG file loader and serializer
 description:
   svg-tree provides types representing a SVG document,
@@ -29,7 +29,7 @@
 Source-Repository this
     Type:      git
     Location:  git://github.com/Twinside/svg-tree.git
-    Tag:       v0.3.2.2
+    Tag:       v0.4
 
 library
   hs-source-dirs: src