diff --git a/requirements/base.txt b/requirements/base.txt
index 7a75bce9..adbccf90 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -5,7 +5,7 @@ Flask-Caching==1.8.0
 Flask-DotEnv==0.1.1
 itsdangerous==2.0.1 # fix for Flask < 2: https://stackoverflow.com/q/71189819
 jinja2<3.1.0 # fix for breaking API change: https://stackoverflow.com/a/71721006
-lxml==4.5.0
+lxml==4.9.1
 neo4j==4.1.1
 python-dotenv==0.10.1
 PyYAML==6.0