diff --git a/REQUIREMENTS.txt b/REQUIREMENTS.txt
index 301d24a..1a885ee 100644
--- a/REQUIREMENTS.txt
+++ b/REQUIREMENTS.txt
@@ -14,7 +14,7 @@ PyYAML==3.13
 requests==2.18.4
 six==1.11.0
 slackclient==1.2.1
-urllib3==1.22
+urllib3==1.26.5
 webencodings==0.5.1
 websocket-client==0.47.0
 rules==2.0.1