diff --git a/vendor.txt b/vendor.txt
index c60d43092..6ce8846c8 100644
--- a/vendor.txt
+++ b/vendor.txt
@@ -2,3 +2,4 @@ beautifulsoup4==4.15.0
 ply==3.10
 progressbar==2.5
 simplediff==1.1
+typing_extensions==4.15.0