diff --git a/requirements.txt b/requirements.txt
index d745a14..02661f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.2
 sphinxcontrib-serializinghtml==1.1.3
 translationstring==1.3
-urllib3==1.25.7
+urllib3==1.26.5
 venusian==3.0.0
 WebOb==1.8.5
 zope.deprecation==4.4.0