diff --git a/COUNTER_Robots_list.json b/COUNTER_Robots_list.json
index 40df507..1214881 100644
--- a/COUNTER_Robots_list.json
+++ b/COUNTER_Robots_list.json
@@ -200,6 +200,12 @@
     "pattern": "celestial",
     "last_changed": "2017-08-08"
   },
+  {
+    "pattern": "centreon",
+    "last_changed": "2024-01-22",
+    "description": "IT and Application monitoring software.",
+    "url": "https://www.centreon.com/"
+  },
   {
     "pattern": "centuryb",
     "last_changed": "2022-04-27"
@@ -1225,6 +1231,12 @@
     "url": "https://w3af.org/",
     "last_changed": "2017-08-08"
   },
+  {
+    "pattern": "W3C-checklink",
+    "last_changed": "2024-01-22",
+    "description": "This Link Checker looks for issues in links, anchors and referenced objects in a Web page, CSS style sheet, or recursively on a whole Web site.",
+    "url": "https://validator.w3.org/checklink"
+  },
   {
     "pattern": "Wanadoo",
     "last_changed": "2017-08-08"