diff --git a/setup.py b/setup.py
index 3bfca2d15d1827bbdcb59c4f229d9271745108fd_c2V0dXAucHk=..b4c4220047c07ba9c2d87fd9a2843599de6387c7_c2V0dXAucHk= 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name='heptapod',
-    version='0.12.2',
+    version='0.12.3.dev0',
     author='Georges Racinet',
     author_email='georges.racinet@octobus.net',
     url='https://foss.heptapod.net/heptapod/py-heptapod',