diff --git a/public/arf.json b/public/arf.json
index 353996e..5087a77 100644
--- a/public/arf.json
+++ b/public/arf.json
@@ -342,7 +342,7 @@
       {
         "name": "DNSstuff",
         "type": "url",
-        "url": "http://www.dnsstuff.com/tools"
+        "url": "https://tools.dnsstuff.com/"
       },
       {
         "name": "Robtex",