diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 74cf8f8..124ea8a 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,3 +1,9 @@
+0.9rc1 (unreleased)
+===================
+
+- Nothing changed yet.
+
+
 0.9rc0 (2020-10-01)
 ===================
 
diff --git a/modernize/__init__.py b/modernize/__init__.py
index 8e8e2fe..0b52328 100644
--- a/modernize/__init__.py
+++ b/modernize/__init__.py
@@ -4,4 +4,4 @@
 
 from __future__ import generator_stop
 
-__version__ = "0.9rc0"
+__version__ = "0.9rc1.dev0"