diff --git a/elasticsearch-metrics-demo/requirements.txt b/elasticsearch-metrics-demo/requirements.txt
index 2032b0f..586d1d4 100644
--- a/elasticsearch-metrics-demo/requirements.txt
+++ b/elasticsearch-metrics-demo/requirements.txt
@@ -3,4 +3,4 @@ elasticsearch==5.2.0
 packaging==16.8
 pyparsing==2.1.10
 six==1.10.0
-urllib3==1.20
+urllib3==1.26.5