diff --git a/CHANGES.rst b/CHANGES.rst
index b9966ea..46fadfd 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changelog of threedi-schema
 ===================================================
 
+0.220 (unreleased)
+------------------
+
+- Nothing changed yet.
+
+
 0.219 (2024-01-25)
 ------------------
 
diff --git a/threedi_schema/__init__.py b/threedi_schema/__init__.py
index 2386d9a..e9f4b12 100644
--- a/threedi_schema/__init__.py
+++ b/threedi_schema/__init__.py
@@ -2,5 +2,5 @@
 from .domain import constants, custom_types, models  # NOQA
 
 # fmt: off
-__version__ = '0.219'
+__version__ = '0.220.dev0'
 # fmt: on