diff --git a/requirements.txt b/requirements.txt
index d6ca00b..1784b40 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ h11==0.12.0
 idna==3.2
 itsdangerous==2.0.1
 Jinja2==3.0.1
-lxml==4.6.3
+lxml==4.9.1
 MarkupSafe==2.0.1
 mistune==2.0.2
 Pillow==8.4.0