diff --git a/flaskweb/requirements.txt b/flaskweb/requirements.txt
index 4eb4261..2e02ad4 100644
--- a/flaskweb/requirements.txt
+++ b/flaskweb/requirements.txt
@@ -17,6 +17,6 @@ numpy == 1.14.3
 pandas == 0.22.0
 
 # utility\mongodb.py: 2
-pymongo == 3.6.1
+pymongo == 4.6.3