diff --git a/pyproject.toml b/pyproject.toml
index 80fdde9d..5a9cfffb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,7 @@ classifiers = [
 dependencies = []
 
 [project.urls]
+Documentation = "https://packaging.pypa.io/"
 Source = "https://github.com/pypa/packaging"