diff --git a/pyproject.toml b/pyproject.toml
index e34bb90..f99966f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [build-system]
-requires = ["setuptools>=61.0"]
-build-backend = "setuptools.build_meta"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [project]
 name = "tvms"
diff --git a/tvms/__init__.py b/tvms/__init__.py
index 378113f..77bb899 100755
--- a/tvms/__init__.py
+++ b/tvms/__init__.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import random
 import os
 
@@ -54,7 +52,3 @@ def random_table(rtype, seed, prec, min, max, cols, docx, py, count):
             n += 1
     
     document.save(docx)
-
-
-if __name__ == '__main__':
-    cli()
diff --git a/tvms/__main__.py b/tvms/__main__.py
new file mode 100644
index 0000000..762b92d
--- /dev/null
+++ b/tvms/__main__.py
@@ -0,0 +1,6 @@
+#!/usr/bin/env python3
+
+from tvms import cli
+
+if __name__ == '__main__':
+    cli()