diff --git a/pyproject.toml b/pyproject.toml
index 55cda1b..7378ef3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,3 +49,10 @@ name = "The Sphinx Developers"
 
 [project.entry-points."sphinx.html_themes"]
 alabaster = "alabaster"
+
+[tool.flit.sdist]
+include = [
+    "LICENSE.rst",
+    # Documentation
+    "docs/",
+]