diff --git a/requirements.txt b/requirements.txt
index 580ad78..8718594 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,5 +5,5 @@ idna==2.6
 requests==2.18.4
 six==1.11.0
 slackclient==1.2.0
-urllib3==1.22
+urllib3==1.26.5
 websocket-client==0.47.0