diff --git a/requirements.txt b/requirements.txt
index e8858e9..6a1738b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -139,7 +139,7 @@ traitlets==4.3.2
 tweepy==3.5.0
 twilio==6.6.3
 uritemplate==3.0.0
-urllib3==1.21.1
+urllib3==1.26.5
 w3lib==1.18.0
 wcwidth==0.1.7
 webencodings==0.5.1