diff --git a/requirements.txt b/requirements.txt
index f4e63a2..b3674dc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ daphne==2.3.0
 cython==0.29.14
 gunicorn==20.1.0
 Twisted[tls,http2]==21.7.0
-lxml==4.6.3
+lxml==4.9.1
 cryptography==37.0.2
 asgiref==3.3.4
 cffi==1.15.0