diff --git a/src/calibre/__init__.py b/src/calibre/__init__.py
index e88b981d8e..c8b37b4bfb 100644
--- a/src/calibre/__init__.py
+++ b/src/calibre/__init__.py
@@ -1,7 +1,7 @@
 ''' E-book management software'''
 __license__   = 'GPL v3'
 __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
-__version__   = '0.4.56'
+__version__   = '0.4.57'
 __docformat__ = "epytext"
 __author__    = "Kovid Goyal <kovid at kovidgoyal.net>"
 __appname__   = 'calibre'