diff --git a/script/package b/script/package
index 1f04c1f..1a2aa98 100755
--- a/script/package
+++ b/script/package
@@ -8,4 +8,6 @@ _PROGRAM_DIR = _DIR.parent
 _VENV_DIR = _PROGRAM_DIR / ".venv"
 
 context = venv.EnvBuilder().ensure_directories(_VENV_DIR)
-subprocess.check_call([context.env_exe, _PROGRAM_DIR / "setup.py", "bdist_wheel"])
+subprocess.check_call(
+    [context.env_exe, _PROGRAM_DIR / "setup.py", "bdist_wheel", "sdist"]
+)