diff --git a/requirements/common.in b/requirements/common.in
index 55cbff76c7..7711ef5933 100644
--- a/requirements/common.in
+++ b/requirements/common.in
@@ -188,7 +188,7 @@ py3dns==3.2.0
 social-auth-app-django==3.1.0
 
 # Needed for messages' rendered content parsing in push notifications.
-lxml==4.3.2
+lxml==4.3.3
 
 # Needed for 2-factor authentication
 django-two-factor-auth==1.8.0
diff --git a/requirements/dev.txt b/requirements/dev.txt
index c1360bcd32..ccf8e122f3 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -91,7 +91,7 @@ jmespath==0.9.4           # via boto3, botocore
 jsondiff==1.1.1           # via moto
 jsonpickle==1.1           # via aws-xray-sdk, python-digitalocean
 line_profiler==2.1.2
-lxml==4.3.2
+lxml==4.3.3
 markdown-include==0.5.1
 markdown==3.0.1
 markupsafe==1.1.1
diff --git a/requirements/prod.txt b/requirements/prod.txt
index f5ee61f662..21d2af1d4d 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -65,7 +65,7 @@ ipython==6.5.0
 jedi==0.13.3              # via ipython
 jinja2==2.10.1
 line_profiler==2.1.2
-lxml==4.3.2
+lxml==4.3.3
 markdown-include==0.5.1
 markdown==3.0.1
 markupsafe==1.1.1