diff --git a/docs/schema/extensions.json b/docs/schema/extensions.json
index 50bb5fc5c..6e4b128b5 100644
--- a/docs/schema/extensions.json
+++ b/docs/schema/extensions.json
@@ -4,15 +4,36 @@
   "markdownDescription": "https://squidfunk.github.io/mkdocs-material/setup/extensions/",
   "type": "array",
   "items": {
-    "oneOf": [
+    "anyOf": [
       {
-        "$ref": "extensions/markdown.json"
+        "$ref": "#/$defs/external"
       },
       {
-        "$ref": "extensions/pymdownx.json"
+        "$ref": "#/$defs/external-community"
       }
     ]
   },
   "uniqueItems": true,
-  "minItems": 1
+  "minItems": 1,
+  "$defs": {
+    "external": {
+      "description": "External markdown extensions, schema provided by us",
+      "anyOf": [
+        {
+          "$ref": "extensions/markdown.json"
+        },
+        {
+          "$ref": "extensions/pymdownx.json"
+        }
+      ]
+    },
+    "external-community": {
+      "description": "External markdown extensions, schema provided by our community",
+      "anyOf": [
+        {
+          "$ref": "https://raw.githubusercontent.com/Neoteroi/mkdocs-plugins/main/docs/extensions-schema.json"
+        }
+      ]
+    }
+  }
 }
diff --git a/docs/schema/extensions/markdown.json b/docs/schema/extensions/markdown.json
index 0de7f1fba..746040faf 100644
--- a/docs/schema/extensions/markdown.json
+++ b/docs/schema/extensions/markdown.json
@@ -59,6 +59,14 @@
         "md_in_html"
       ]
     },
+    {
+      "title": "Sane Lists – Python Markdown",
+      "markdownDescription": "https://python-markdown.github.io/extensions/sane_lists/",
+      "enum": [
+        "markdown.extensions.sane_lists",
+        "sane_lists"
+      ]
+    },
     {
       "title": "Tables – Python Markdown",
       "markdownDescription": "https://squidfunk.github.io/mkdocs-material/setup/extensions/python-markdown/#tables",