diff --git a/owmeta/__init__.py b/owmeta/__init__.py
index 84f21260..bdc0864a 100644
--- a/owmeta/__init__.py
+++ b/owmeta/__init__.py
@@ -13,7 +13,7 @@
 """
 
 from __future__ import print_function
-__version__ = '0.12.3.dev0'
+__version__ = '0.12.3'
 __author__ = 'OpenWorm.org authors and contributors'
 
 import logging