diff --git a/src/calibre/constants.py b/src/calibre/constants.py
index 692680f326..a358f6a969 100644
--- a/src/calibre/constants.py
+++ b/src/calibre/constants.py
@@ -11,7 +11,7 @@ from functools import lru_cache
 from polyglot.builtins import environ_item, hasenv
 
 __appname__   = 'calibre'
-numeric_version = (7, 21, 0)
+numeric_version = (7, 21, 100)
 __version__   = '.'.join(map(str, numeric_version))
 git_version   = None
 __author__    = "Kovid Goyal <kovid@kovidgoyal.net>"