diff --git a/requirements.txt b/requirements.txt
index c72309d..5f964d5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 mygene==3.0.0
-pymongo==3.4.0
+pymongo==4.6.3
 bs4==0.0.1
 pyliftover==0.3
 pandas==0.19.2