diff --git a/gnowsys-ndf/docs/requirements.txt b/gnowsys-ndf/docs/requirements.txt
index 0895cd649..10c95a76b 100644
--- a/gnowsys-ndf/docs/requirements.txt
+++ b/gnowsys-ndf/docs/requirements.txt
@@ -10,7 +10,7 @@ checksumdir==1.2.0
 cryptography==3.4.6
 decorator==4.4.2
 diskcache==5.1.0
-Django==2.2
+Django==2.2.28
 django-json-rpc==0.7.2
 ecdsa==0.16.1
 elasticsearch==6.8.1