diff --git a/Symbology/web/vector.schema.json b/Symbology/web/vector.schema.json
index fb02c6a1..42d4b875 100644
--- a/Symbology/web/vector.schema.json
+++ b/Symbology/web/vector.schema.json
@@ -1,51 +1,39 @@
 {
-  "$schema": "http://json-schema.org/draft-04/schema#",
+  "$schema": "http://json-schema.org/draft-07/schema#",
   "type": "object",
   "properties": {
     "legend": {
       "type": "array",
       "items": {
         "type": "array",
-        "items": [
-          {"type":"string"},
-          {"type":"string"}
-        ]
+        "prefixItems": [
+          {"type": "string"},
+          {"type": "string"}
+        ],
+        "minItems": 2,
+        "maxItems": 2
       }
     },
     "layerStyles": {
       "type": "array",
-      "items": [
-        {
-          "type": "object",
-          "properties": {
-            "id": {
-              "type": "string"
-            },
-            "type": {
-              "type": "string"
-            },
-            "source": {
-              "type": "string"
-            },
-            "source-layer": {
-              "type": "string"
-            },
-            "layout": {
-              "type": "object"
-            },
-            "paint": {
-              "type": "object"
-            }
-          },
-          "required": [
-            "id",
-            "type",
-            "source",
-            "source-layer",
-            "paint"
-          ]
-        }
-      ]
+      "items": {
+        "type": "object",
+        "properties": {
+          "id": { "type": "string" },
+          "type": { "type": "string" },
+          "source": { "type": "string" },
+          "source-layer": { "type": "string" },
+          "layout": { "type": "object" },
+          "paint": { "type": "object" }
+        },
+        "required": [
+          "id",
+          "type",
+          "source",
+          "source-layer",
+          "paint"
+        ]
+      }
     }
   },
   "required": [