diff --git a/pandas-ml-utils/dev-requirements.frozen.txt b/pandas-ml-utils/dev-requirements.frozen.txt
index 3260d7c2..964b091c 100644
--- a/pandas-ml-utils/dev-requirements.frozen.txt
+++ b/pandas-ml-utils/dev-requirements.frozen.txt
@@ -1,7 +1,7 @@
 drawilleplot==0.1.0
 ipykernel==6.3.1
 jupyter-client==7.0.2
-lxml==4.6.3
+lxml==4.6.5
 Markdown==3.3.4
 matplotlib==3.4.3
 nbconvert==6.1.0