diff --git a/ICT/requirements.txt b/ICT/requirements.txt
index 7cd82bce1..8183a6c0d 100644
--- a/ICT/requirements.txt
+++ b/ICT/requirements.txt
@@ -27,7 +27,7 @@ Jinja2==2.10.3
 jmespath==0.9.4
 joblib==0.14.0
 kiwisolver==1.1.0
-lxml==4.4.1
+lxml==4.9.1
 MarkupSafe==1.1.1
 matplotlib==3.1.1
 more-itertools==7.2.0