diff --git a/src/calibre/constants.py b/src/calibre/constants.py
index 78fb36860a..f38f149752 100644
--- a/src/calibre/constants.py
+++ b/src/calibre/constants.py
@@ -6,7 +6,7 @@ from polyglot.builtins import map, unicode_type
 import sys, locale, codecs, os, importlib, collections
 
 __appname__   = u'calibre'
-numeric_version = (3, 40, 3)
+numeric_version = (3, 40, 4)
 __version__   = u'.'.join(map(unicode_type, numeric_version))
 __author__    = u"Kovid Goyal <kovid@kovidgoyal.net>"