diff --git a/pyproject.toml b/pyproject.toml
index c9aaa26..ef1642a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ requires = ["flit_core >=3.8.0,<4"]
 
 [project]
 name = "tiramisu"
-version = "5.1.1a1"
+version = "5.2.0a0"
 authors = [{name = "Emmanuel Garette", email = "gnunux@gnunux.info"}]
 readme = "README.md"
 description = "an options controller tool"