diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4896d0ac..f40e12ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 This document describes changes between each past release.
 
+## 5.2.1 (unreleased)
+
+- Nothing changed yet.
+
+
 ## 5.2.0 (2022-04-07)
 
 ### Added
diff --git a/setup.cfg b/setup.cfg
index f3ac313e..825af80c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = ihatemoney
-version = 5.2.0
+version = 5.2.1.dev0
 url = https://github.com/spiral-project/ihatemoney
 description = A simple shared budget manager web application.
 long_description = file: README.rst, CHANGELOG.rst