diff --git a/pyproject.toml b/pyproject.toml
index 8cfac9f..cd08aa1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,4 +34,4 @@ Source = "https://github.com/hatkidchan/mastoposter"
 mastoposter = "mastoposter.__main__:main"
 
 [tool.flit.sdist]
-include = ["config.ini"]
+include = ["config.ini", "contrib/*"]