diff --git a/urumanifest/github.py b/urumanifest/github.py
index 8f4f186..e147f3d 100644
--- a/urumanifest/github.py
+++ b/urumanifest/github.py
@@ -21,6 +21,7 @@
 import logging
 import math
 import json
+import os
 from pathlib import Path, PurePosixPath
 import subprocess
 import sys