diff --git a/pyproject.toml b/pyproject.toml
index 2379ddc..a019f05 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,9 @@ dependencies = [
 ]
 requires-python = ">=3.10"
 
+[tool.setuptools]
+packages = ["monggregate"]
+
 [project.optional-dependencies]
 mongo = ["pymongo >= 3.0.0"]
 dev = ["bumpver", "pytest", "mypy", "pylint"]