diff --git a/gnowsys-ndf/docs/requirements.txt b/gnowsys-ndf/docs/requirements.txt
index 0895cd649..16b8ae770 100644
--- a/gnowsys-ndf/docs/requirements.txt
+++ b/gnowsys-ndf/docs/requirements.txt
@@ -61,7 +61,7 @@ toml==0.10.2
 traitlets==4.3.3
 translate-toolkit==3.3.0
 unattended-upgrades==0.1
-urllib3==1.22
+urllib3==1.26.5
 uWSGI==2.0.19.1
 wcwidth==0.2.5
 webencodings==0.5.1