diff --git a/pyproject.toml b/pyproject.toml
index 2e0438a..defdcf6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "py_build_cmake.build"
 
 [project]
 name = "vstarstack"
-version = "0.3.7.0"
+version = "0.3.7.1"
 requires-python = ">=3.10"
 authors = [{name="Vladislav Tsendrovskii", email="vtcendrovskii@gmail.com"}]
 description = 'Stacking astrophotos'
@@ -40,3 +40,6 @@ source_path = "src/c_modules"
 install_components = [
     "python_modules"
 ]
+
+[tool.py-build-cmake.sdist]
+include = ["src/c_modules/*"]
\ No newline at end of file