diff --git a/data-science/fastcampus/data-science-online/4-database/aws/requirements.txt b/data-science/fastcampus/data-science-online/4-database/aws/requirements.txt
old mode 100755
new mode 100644
index 8d60422..21b3478
--- a/data-science/fastcampus/data-science-online/4-database/aws/requirements.txt
+++ b/data-science/fastcampus/data-science-online/4-database/aws/requirements.txt
@@ -13,4 +13,4 @@ scipy
 statsmodels
 mysqlclient
 sqlalchemy
-pymongo==2.8.1
+pymongo==4.6.3