diff --git a/mock/requirements.txt b/mock/requirements.txt
index 45f2dc0..b683f4a 100644
--- a/mock/requirements.txt
+++ b/mock/requirements.txt
@@ -15,6 +15,6 @@ PyYAML==5.1
 requests==2.22.0
 six==1.12.0
 transitions==0.6.9
-urllib3==1.25.3
+urllib3==1.26.5
 websockets==7.0
 Werkzeug==0.15.5