diff --git a/CHANGELOG.md b/CHANGELOG.md
index d088952..e443bf9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file.
 
+## 1.0.1 (unreleased)
+---------------------
+
+- Nothing changed yet.
+
+
 ## 1.0.0 (2023-06-26)
 ------------------
 
diff --git a/setup.cfg b/setup.cfg
index b3c7c59..66ff211 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = mypy-zope
-version = 1.0.0
+version = 1.0.1.dev0
 author = Andrey Lebedev
 author_email = andrey.lebedev@gmail.com
 url = https://github.com/Shoobx/mypy-zope