diff --git a/pyproject.toml b/pyproject.toml
index 537ba77b..6ce319df 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ classifiers = [
 
 [tool.setuptools.packages.find]
 where = ["./"]
-include = ["diffsynth"]
+include = ["diffsynth", "diffsynth.*"]
 
 [tool.setuptools]
 include-package-data = true