diff --git a/requirements.txt b/requirements.txt
index 29f5fb1..60330e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # `pip install -r requirements.txt` before you can run this.
 
 pytest==6.1.0
-pymongo==3.10.0
+pymongo==4.6.3
 mongomock==3.18.0
 colorama==0.4.3
 psutil==5.6.7