diff --git a/scadnano/scadnano.py b/scadnano/scadnano.py
index b94e044d..d859c87c 100644
--- a/scadnano/scadnano.py
+++ b/scadnano/scadnano.py
@@ -44,7 +44,7 @@
 # commented out for now to support Python 3.6, which does not support this feature
 # from __future__ import annotations
 
-__version__ = "0.11.2"  # version line; WARNING: do not remove or change this line or comment
+__version__ = "0.12.0"  # version line; WARNING: do not remove or change this line or comment
 
 import dataclasses
 from abc import abstractmethod, ABC