diff --git a/app-engine-lab-2/requirements.txt b/app-engine-lab-2/requirements.txt
index 70b9653..0afb5c7 100644
--- a/app-engine-lab-2/requirements.txt
+++ b/app-engine-lab-2/requirements.txt
@@ -6,5 +6,5 @@ oauth2client==4.1.3
 Flask-SQLAlchemy==2.5.1
 PyMySQL==1.0.2
 Flask-PyMongo==2.3.0
-PyMongo==3.12.1
+PyMongo==4.6.3
 six==1.16.0