diff --git a/doc/conf.py b/doc/conf.py
index 24cb70124..8671eb07d 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -23,7 +23,7 @@
 author = "Bach, P., Chernozhukov, V., Klaassen, S., Kurz, M. S., and Spindler, M."
 
 # The full version, including alpha/beta/rc tags
-release = "0.11.dev0"
+release = "0.12.dev0"
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/pyproject.toml b/pyproject.toml
index e1606ccca..6aa06ab50 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "DoubleML"
-version = "0.11.dev0"
+version = "0.12.dev0"
 description = "Double Machine Learning in Python"
 readme = {file = "README.md", content-type = "text/markdown"}
 license = {file = "LICENSE"}