diff --git a/meta-schemas/core.yaml b/meta-schemas/core.yaml
index 89812a92..b329c26e 100644
--- a/meta-schemas/core.yaml
+++ b/meta-schemas/core.yaml
@@ -44,6 +44,20 @@ definitions:
             enum: [ boolean, object ]
           properties:
             $ref: "#/definitions/all-properties"
+          patternProperties:
+            $ref: "#/definitions/all-properties"
+
+        allOf:
+          - if:
+              type: object
+              properties:
+                type:
+                  const: object
+              required:
+                - type
+            then:
+              $ref: "nodes.yaml#"
+
         dependencies:
           properties: [ type ]
           contains:
diff --git a/meta-schemas/nodes.yaml b/meta-schemas/nodes.yaml
index 7c569d47..6f45d2f6 100644
--- a/meta-schemas/nodes.yaml
+++ b/meta-schemas/nodes.yaml
@@ -10,14 +10,20 @@ type: object
 properties:
   type:
     const: object
-  description: {}
-  properties: {}
-  patternProperties: {}
-  additionalProperties: {}
-  required: {}
+
+propertyNames:
+  enum:
+    - type
+    - description
+    - dependencies
+    - properties
+    - patternProperties
+    - additionalProperties
+    - required
+    - allOf
+    - anyOf
+    - oneOf
+    - $ref
 
 required:
   - type
-  - properties
-
-additionalProperties: false