diff --git a/telegram/vendor/ptb_urllib3 b/telegram/vendor/ptb_urllib3
index 06d04e451..d2403a79f 160000
--- a/telegram/vendor/ptb_urllib3
+++ b/telegram/vendor/ptb_urllib3
@@ -1 +1 @@
-Subproject commit 06d04e451f6beb5562057bf793218c4e363d8bc0
+Subproject commit d2403a79fc38afbdd9aba8a05d274a83dc8bb412