diff --git a/requirements.txt b/requirements.txt
index 5d133df..1f96e9f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -112,7 +112,7 @@ tornado==5.1
 traitlets==4.3.2
 Twisted==17.5.0
 unityagents==0.4.0
-urllib3==1.23
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5
 Werkzeug==0.14.1