diff --git a/requirements.txt b/requirements.txt
index 7b676ad..2ac83a7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ img2pdf==0.3.6
 importlib-metadata==1.6.1
 itsdangerous==1.1.0
 Jinja2==2.11.2
-lxml==4.5.1
+lxml==4.6.2
 MarkupSafe==1.1.1
 murmurhash==1.0.2
 numpy==1.19.0