diff --git a/doubleml/rdd/datasets/__init__.py b/doubleml/rdd/datasets/__init__.py
index cb65173d..6167e9de 100644
--- a/doubleml/rdd/datasets/__init__.py
+++ b/doubleml/rdd/datasets/__init__.py
@@ -1,2 +1,11 @@
+"""
+The :mod:`doubleml.rdd.datasets` module implements data generating processes for regression discontinuity designs.
+"""
+
 from .simple_dgp import make_simple_rdd_data
 from .area_yield_dgp import dgp_area_yield
+
+__all__ = [
+    "make_simple_rdd_data",
+    "dgp_area_yield",
+]