diff --git a/example/requirements.txt b/example/requirements.txt
index 34c0988..320b05e 100644
--- a/example/requirements.txt
+++ b/example/requirements.txt
@@ -20,7 +20,7 @@ marrow.util==1.2.3
 mongoengine==0.19.1
 Pillow==7.1.0
 Pygments==2.7.4
-pymongo==3.10.0
+pymongo==4.6.3
 pytest==5.3.2
 pytest-spec==2.0.0
 python-logging-json-formatter==0.1.0