diff --git a/requirements.txt b/requirements.txt
index 599600f..cde713a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -78,7 +78,7 @@ testpath==0.4.2
 tornado==6.0.3
 traitlets==4.3.2
 uritemplate==3.0.0
-urllib3==1.25.3
+urllib3==1.25.8
 validate-email==1.3
 wcwidth==0.1.7
 webencodings==0.5.1