diff --git a/oauth2_server/requirements.txt b/oauth2_server/requirements.txt
index f23d648..b1223a6 100644
--- a/oauth2_server/requirements.txt
+++ b/oauth2_server/requirements.txt
@@ -24,7 +24,7 @@ python-dateutil==2.8.1
 python-json-logger==0.1.11
 requests==2.22.0
 six==1.13.0
-urllib3==1.25.7
+urllib3==1.25.8
 wcwidth==0.1.7
 Werkzeug==0.16.0
 zipp==0.6.0