diff --git a/requirements.txt b/requirements.txt
index ad024e5..eda3d1e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ transaction==2.4.0
 translationstring==1.3
 typing==3.7.4.1
 ujson==1.35
-urllib3==1.25.3
+urllib3==1.25.5
 venusian==1.2.0
 waitress==1.3.1
 WebOb==1.8.5