diff --git a/requirements.txt b/requirements.txt
index 207d720..7de01b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,6 +29,6 @@ rsa==4.0
 six==1.12.0
 timer==0.1
 uritemplate==3.0.0
-urllib3==1.25.3
+urllib3==1.25.8
 Werkzeug==0.15.6
 zope.interface==4.6.0