diff --git a/pyproject.toml b/pyproject.toml
index ac0d5e2..ac37ef7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ requires = ["flit_core >=3.8.0,<4"]
 
 [project]
 name = "tiramisu"
-version = "5.2.0a30"
+version = "5.2.0a31"
 authors = [{name = "Emmanuel Garette", email = "gnunux@gnunux.info"}]
 readme = "README.md"
 description = "an options controller tool"
@@ -24,6 +24,24 @@ classifiers = [
     "Natural Language :: French",
 
 ]
+dependencies = [
+]
+
+[tool.flit.sdist]
+exclude = [
+]
 
 [project.urls]
 Home = "https://forge.cloud.silique.fr/stove/tiramisu"
+
+[tool.commitizen]
+name = "cz_conventional_commits"
+ag_format = "$version"
+version_scheme = "pep440"
+version_provider = "pep621"
+version_files = [
+    "tiramisu/__version__.py",
+    "pyproject.toml:version"
+]
+#update_changelog_on_bump = true
+changelog_merge_prerelease = true
diff --git a/tiramisu/__version__.py b/tiramisu/__version__.py
index cb5ecba..0423759 100644
--- a/tiramisu/__version__.py
+++ b/tiramisu/__version__.py
@@ -1 +1 @@
-__version__ = "5.2.0a30"
+__version__ = "5.2.0a31"