diff --git a/requirements.txt b/requirements.txt
index 6770990..d5774d7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ cycler==0.10.0
 fonttools==4.18.1
 iniconfig==1.1.1
 kiwisolver==1.3.1
-lxml==4.9.1
+lxml==6.1.0
 matplotlib==3.4.2
 numpy==1.22.0
 packaging==20.7