diff --git a/CHANGES.txt b/CHANGES.txt
index 2f30b53..5eec893 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,12 @@
 Changes
 =======
 
+5.0.2 (unreleased)
+------------------
+
+- Nothing changed yet.
+
+
 5.0.1 (2023-05-15)
 ------------------
 
diff --git a/setup.cfg b/setup.cfg
index 86645f1..07a526c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,7 +2,7 @@
 name = tzlocal
 description = tzinfo object for the local timezone
 long_description = file: README.rst, CHANGES.txt
-version = 5.0.1
+version = 5.0.2.dev0
 author = Lennart Regebro
 author_email = regebro@gmail.com
 project_urls =