diff --git a/requirements.txt b/requirements.txt
index a994a2124f..25634aa323 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 analytics-python
 aiohttp
+h11<0.13,>=0.11
 fastapi
 ffmpy
 markdown-it-py[linkify,plugins]