diff --git a/requirements.txt b/requirements.txt
index 9c51583..ddafc93 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ idna==2.10
 Jinja2==3.0.1
 jira==3.0.1
 git+https://github.com/dprog-philippe-docourt/django-jfu.git@2.2.4
-lxml==4.6.5
+lxml==4.9.1
 MarkupSafe==2.0.1
 node==0.9.26
 numpy==1.19.5
diff --git a/requirements_old.txt b/requirements_old.txt
index ab9a657..5f322b8 100644
--- a/requirements_old.txt
+++ b/requirements_old.txt
@@ -27,7 +27,7 @@ idna==2.9
 Jinja2==2.11.3
 jira==2.0.0
 git+https://github.com/dprog-philippe-docourt/django-jfu.git@2.2.4
-lxml==4.6.5
+lxml==4.9.1
 MarkupSafe==1.1.1
 node==0.9.24
 numpy==1.21.0