diff --git a/requirements.txt b/requirements.txt
index cc86a3cdca..92a0d4acb5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ glyphsLib==5.3.1
 idna==3.4
 itsdangerous==1.1.0
 Jinja2==2.11.3
-lxml==4.9.1
+lxml==6.1.0
 MarkupSafe==1.1.1
 openstep-plist==0.3.1
 opentype-sanitizer==8.1.2.post3