diff --git a/extensions/linkedin/0.1.0/schema.json b/extensions/linkedin/0.1.0/schema.json
index be086334..bab5d3ae 100644
--- a/extensions/linkedin/0.1.0/schema.json
+++ b/extensions/linkedin/0.1.0/schema.json
@@ -1,5 +1,10 @@
 {
     "type": "string",
+    "patternProperties": {
+        "x-linkedin":{
+            "$ref": "^https:\/\/(?:www\.)?linkedin\.com.*"
+        }
+    },
     "description": "This extension allows you to provide the Linkedin profile URL of the account representing the team/company of the API.",
     "example": [
         "https://www.linkedin.com/company/asyncapi/",