diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c2487a9..5100dc53 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## 3.7.0.dev
+
 ## 3.6.1
 
 * Fix: MOVE failing with URL-encoded destination header
diff --git a/pyproject.toml b/pyproject.toml
index 3b19d2c1..297f57a5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "Radicale"
 # When the version is updated, a new section in the CHANGELOG.md file must be
 # added too.
 readme = "README.md"
-version = "3.6.1"
+version = "3.7.0.dev"
 authors = [{name = "Guillaume Ayoub", email = "guillaume.ayoub@kozea.fr"}, {name = "Unrud", email = "unrud@outlook.com"}, {name = "Peter Bieringer", email = "pb@bieringer.de"}]
 license = {text = "GNU GPL v3"}
 description = "CalDAV and CardDAV Server"
diff --git a/setup.py.legacy b/setup.py.legacy
index 8b43031c..31508933 100644
--- a/setup.py.legacy
+++ b/setup.py.legacy
@@ -20,7 +20,7 @@ from setuptools import find_packages, setup
 
 # When the version is updated, a new section in the CHANGELOG.md file must be
 # added too.
-VERSION = "3.6.1"
+VERSION = "3.7.0.dev"
 
 with open("README.md", encoding="utf-8") as f:
     long_description = f.read()