diff --git a/requirements.txt b/requirements.txt
index b3867908..d1978543 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -84,7 +84,7 @@ kmsauth==0.6.0
     # via -r requirements.in
 lru-dict==1.1.6
     # via -r requirements.in
-lxml==4.6.5
+lxml==4.9.1
     # via xmlsec
 markupsafe==2.0.1
     # via jinja2
@@ -171,9 +171,9 @@ werkzeug==1.0.1
     # via flask
 xmlsec==1.3.3
     # via python3-saml
-zope.event==4.5.0
+zope-event==4.5.0
     # via gevent
-zope.interface==5.4.0
+zope-interface==5.4.0
     # via gevent
 
 # The following packages are considered to be unsafe in a requirements file: