diff --git a/pyproject.toml b/pyproject.toml
index d0a68aaf..00b2cbe4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "OpenFisca-Aotearoa"
-version = "20.1.1"
+version = "21.0.0"
 description = "OpenFisca rules-as-code system for Aotearoa."
 license = "AGPL-3.0-only"
 authors = [