diff --git a/requirements.txt b/requirements.txt
index 7783cc4..4604366 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ requests==2.20.0
 s3transfer==0.1.13
 six==1.11.0
 slackclient==1.3.0
-urllib3==1.24
+urllib3==1.26.5
 websocket-client==0.53.0
 Werkzeug==0.14.1