diff --git a/requirements.txt b/requirements.txt
index d5f5fbd..fea4b26 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 flake8==2.4.0
 django-crequest==2018.5.11
-lxml==3.8.0
+lxml==4.9.1
diff --git a/setup.py b/setup.py
index e8e411b..1bb9ede 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,7 @@ def package_data(pkg, root_list):
     install_requires=[
         'XBlock==1.2.9',
         'django-crequest',
-        'lxml==3.8.0',
+        'lxml==4.9.1',
         'web-fragments==0.2.2',
     ],
     dependency_links=[