diff --git a/pyproject.toml b/pyproject.toml
index 06ba850..4d5cb70 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "django_rest_aggregation"
-version = "0.3.0"
+version = "0.4.0"
 authors = [
     { name = "Simon Legtenborg", email = "simon.legtenborg@singular-it.de" },
 ]