diff --git a/requirements.txt b/requirements.txt
index 46a2195..14c76d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,5 +21,5 @@ PyYAML==3.13
 relativetimebuilder==0.2.0
 requests==2.21.0
 six==1.12.0
-urllib3==1.24.1
+urllib3==1.26.5
 Werkzeug==0.14.1