diff --git a/requirements.txt b/requirements.txt
index b27bbac..fe5b77d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Flask
 Flask-Babel
-pymongo==1.9
+pymongo==4.6.3
 python-postmark
 gevent
 gunicorn