diff --git a/module_rename.py b/module_rename.py
new file mode 100644
index 0000000..bf03152
--- /dev/null
+++ b/module_rename.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import os
+import argparse
+import fileinput
+
+
+PKG_ORIGINAL = "github.com/tailscale/wireguard-go"
+PKG_NEW = "github.com/sagernet/wireguard-go"
+
+EXTENSIONS = [".go", ".md", ".mod", ".sh"]
+
+parser = argparse.ArgumentParser()
+parser.add_argument("-r", "--reverse", action="store_true")
+args = parser.parse_args()
+
+
+def replace_line(line):
+    if args.reverse:
+        return line.replace(PKG_NEW, PKG_ORIGINAL)
+    return line.replace(PKG_ORIGINAL, PKG_NEW)
+
+
+for dirpath, dirnames, filenames in os.walk("."):
+    # Skip hidden directories like .git
+    dirnames[:] = [d for d in dirnames if not d[0] == "."]
+    filenames = [f for f in filenames if os.path.splitext(f)[1] in EXTENSIONS]
+    for filename in filenames:
+        file_path = os.path.join(dirpath, filename)
+        with fileinput.FileInput(file_path, inplace=True) as file:
+            for line in file:
+                print(replace_line(line), end="")