diff --git a/requirements.txt b/requirements.txt
index 52e26c4..02037ec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 jsonschema==2.6.0
 icalendar==4.0.0
-pymongo==3.6.0
+pymongo==4.6.3
 python-dateutil==2.6.1
 pytz==2017.3
 six==1.11.0