diff --git a/requirements.txt b/requirements.txt
index d67ce05..898db94 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,6 @@ PyYAML==5.1
 requests==2.21.0
 six==1.12.0
 slackclient==1.3.1
-urllib3==1.24.1
+urllib3==1.26.5
 websocket-client==0.54.0
 Werkzeug==0.14.1