diff --git a/cps/constants.py b/cps/constants.py
index 21fecebea..1a5af1352 100644
--- a/cps/constants.py
+++ b/cps/constants.py
@@ -175,7 +175,7 @@ BookMeta = namedtuple('BookMeta', 'file_path, extension, title, author, cover, d
                                   'series_id, languages, publisher, pubdate, identifiers')
 
 # python build process likes to have x.y.zbw -> b for beta and w a counting number
-STABLE_VERSION =  '0.6.26b'
+STABLE_VERSION =  '0.6.26'
 
 NIGHTLY_VERSION = dict()
 NIGHTLY_VERSION[0] = '$Format:%H$'