diff --git a/docker/requirements.txt b/docker/requirements.txt
index 94b853e..dba4409 100644
--- a/docker/requirements.txt
+++ b/docker/requirements.txt
@@ -1,4 +1,4 @@
-lxml==4.2.4
+lxml==4.9.1
 psycopg2-binary==2.7.5
 configparser==3.5.0
 bs4==0.0.1
diff --git a/requirements.txt b/requirements.txt
index 17771b0..6a71441 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ jupyter-client==4.4.0
 jupyter-console==4.0.3
 jupyter-core==4.2.0
 logilab-common==0.63.2
-lxml==3.4.4
+lxml==4.9.1
 MarkupSafe==0.23
 matplotlib==1.4.3
 mistune==0.8.1