diff --git a/src/schema-validation.jsonc b/src/schema-validation.jsonc
index cb1b30437e6..3af71db4024 100644
--- a/src/schema-validation.jsonc
+++ b/src/schema-validation.jsonc
@@ -1211,9 +1211,6 @@
       "externalSchema": ["gematik-test-patients.json"],
       "unknownKeywords": ["existingJavaType"]
     },
-    "grafana-dashboard-5.x.json": {
-      "externalSchema": ["base-04.json"]
-    },
     "grunt-clean-task.json": {
       "externalSchema": ["grunt-task.json"]
     },
diff --git a/src/schemas/json/grafana-dashboard-5.x.json b/src/schemas/json/grafana-dashboard-5.x.json
index d08fe437166..8d01825ec5d 100644
--- a/src/schemas/json/grafana-dashboard-5.x.json
+++ b/src/schemas/json/grafana-dashboard-5.x.json
@@ -1,7 +1,7 @@
 {
-  "$schema": "http://json-schema.org/draft-04/schema#",
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://json.schemastore.org/grafana-dashboard-5.x.json",
   "description": "JSON Schema for Grafana 5.x Dashboards (https://grafana.com/docs/grafana/latest/reference/dashboard/#dashboard-json)",
-  "id": "https://json.schemastore.org/grafana-dashboard-5.x.json",
   "properties": {
     "meta": {
       "type": "object",
@@ -16,7 +16,14 @@
       "properties": {
         "id": {
           "description": "unique numeric identifier for the dashboard. (generated by the db)",
-          "type": ["number", "null"]
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "null"
+            }
+          ]
         },
         "uid": {
           "description": "unique dashboard identifier that can be generated by anyone. string (8-40)",
@@ -177,7 +184,14 @@
                   },
                   "datasource": {
                     "description": "shows data source for the variables",
-                    "type": ["string", "null"]
+                    "anyOf": [
+                      {
+                        "type": "string"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
                   },
                   "includeAll": {
                     "description": "whether all value option is available or not",