diff --git a/requirements.py2.txt b/requirements.py2.txt
index 898b01d..fa33083 100644
--- a/requirements.py2.txt
+++ b/requirements.py2.txt
@@ -7,7 +7,7 @@ httplib2==0.18.1
 ipdb==0.10.2
 ipython==5.3.0
 ipython-genutils==0.2.0
-lxml==4.5.1
+lxml==4.9.1
 markdown==3.1.1
 oauth2client==4.1.2
 packaging==16.8
diff --git a/requirements.txt b/requirements.txt
index 45da142..63abd34 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ httplib2==0.18.1
 ipdb==0.10.2
 ipython==5.3.0
 ipython-genutils==0.2.0
-lxml==4.5.1
+lxml==4.9.1
 markdown==3.2.2
 oauth2client==4.1.2
 packaging==16.8