diff --git a/requirements.txt b/requirements.txt
index 835464d..12c92a9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ pytest==4.6.3
 requests==2.22.0
 requests-wsgi-adapter==0.4.1
 six==1.12.0
-urllib3==1.25.3
+urllib3==1.26.5
 wcwidth==0.1.7
 WebOb==1.8.5
 whitenoise==4.1.2