diff --git a/Operators_Pattern/visitor_site-webapp/code/visitors-service/requirements.txt b/Operators_Pattern/visitor_site-webapp/code/visitors-service/requirements.txt
index 4e43455..c9e67c1 100644
--- a/Operators_Pattern/visitor_site-webapp/code/visitors-service/requirements.txt
+++ b/Operators_Pattern/visitor_site-webapp/code/visitors-service/requirements.txt
@@ -1,5 +1,5 @@
 django>=2.2.13
-djangorestframework==3.9.4
+djangorestframework==3.11.2
 django-cors-headers==2.4.0
 mysqlclient==1.3.13
 pytz==2019.1