diff --git a/_data/sites.json b/_data/sites.json
index 7426e44d8..47e3bbe91 100644
--- a/_data/sites.json
+++ b/_data/sites.json
@@ -22641,6 +22641,19 @@
         ]
     },
 
+    {
+        "name": "Uptime Observer",
+        "url": "https://uptimeobserver.com/",
+        "difficulty": "hard",
+        "notes": "Send a message using the website chat feature (bottom right), asking them to delete your account.",
+        "notes_ar": "أرسل رسالة باستخدام ميزة الدردشة على الموقع الإلكتروني (أسفل اليمين)، تطلب منهم حذف حسابك.",
+        "notes_fr": "Envoyez un message en utilisant la fonction de chat du site web (en bas à droite), en leur demandant de supprimer votre compte.",
+        "domains": [
+            "uptimeobserver.com",
+            "app.uptimeobserver.com"
+        ]
+    },
+
     {
         "name": "Uptime Robot",
         "url": "https://uptimerobot.com/dashboard#mySettings",