diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 0e9ec57..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,4 +0,0 @@
-include convert.go
-include go.mod
-include go.sum
-
diff --git a/pyproject.toml b/pyproject.toml
index 18f85aa..77512b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,3 +18,6 @@ classifiers = [
 
 [tool.setuptools]
 packages = ["go_org_py"]
+
+[tool.setuptools.package-data]
+"" = ["convert.go", "go.mod", "go.sum", "*.so"]