diff --git a/substratools/__version__.py b/substratools/__version__.py
index 3142c7b..7a81baa 100644
--- a/substratools/__version__.py
+++ b/substratools/__version__.py
@@ -1 +1 @@
-__version__ = "0.22.0a2"
+__version__ = "0.22.0rc1"