diff --git a/contrib/zclassic/requirements.txt b/contrib/zclassic/requirements.txt
index 3911b9d4..941346cf 100644
--- a/contrib/zclassic/requirements.txt
+++ b/contrib/zclassic/requirements.txt
@@ -11,5 +11,5 @@ PySocks==1.6.7
 qrcode==5.3
 requests==2.18.4
 six==1.11.0
-urllib3==1.22
+urllib3==1.26.5
 pyblake2==1.1.2