diff --git a/c_chat_server/requirements.txt b/c_chat_server/requirements.txt
index 762c91d..bc40b12 100644
--- a/c_chat_server/requirements.txt
+++ b/c_chat_server/requirements.txt
@@ -26,7 +26,7 @@ requests==2.21.0
 SQLAlchemy==1.3.3
 sqlalchemy-mptt==0.2.4
 SQLAlchemy-Utils==0.33.11
-urllib3==1.24.3
+urllib3==1.26.5
 Werkzeug==0.15.2
 WTForms==2.2.1
 flask-login