diff --git a/requirements.txt b/requirements.txt
index 87ff7ab..f9c52d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,6 +18,6 @@ pytz==2018.5
 PyYAML==3.13
 requests==2.19.1
 six==1.11.0
-urllib3==1.23
+urllib3==1.26.5
 webencodings==0.5.1
 Werkzeug==0.14.1