diff --git a/hyper-schema.json b/hyper-schema.json
index 3279ad9f..a19bb0fe 100644
--- a/hyper-schema.json
+++ b/hyper-schema.json
@@ -116,6 +116,11 @@
                     "$ref": "#"
                 }
             }
+        },
+        "readOnly": {
+            "description": "If true, indicates that the value of this property is controlled by the server.",
+            "type": "boolean",
+            "default": false
         }
     },
     "links": [
diff --git a/links.json b/links.json
index de272cc4..118601a9 100644
--- a/links.json
+++ b/links.json
@@ -36,6 +36,6 @@
 	"required" : ["rel", "href"],
 	
 	"dependencies" : {
-		"enctype" : "method"
+		"enctype" : ["method"]
 	}
-}
\ No newline at end of file
+}
diff --git a/schema.json b/schema.json
index 85eb502a..bcbb8474 100644
--- a/schema.json
+++ b/schema.json
@@ -28,12 +28,10 @@
     "type": "object",
     "properties": {
         "id": {
-            "type": "string",
-            "format": "uri"
+            "type": "string"
         },
         "$schema": {
-            "type": "string",
-            "format": "uri"
+            "type": "string"
         },
         "title": {
             "type": "string"
@@ -137,6 +135,7 @@
                 }
             ]
         },
+        "format": { "type": "string" },
         "allOf": { "$ref": "#/definitions/schemaArray" },
         "anyOf": { "$ref": "#/definitions/schemaArray" },
         "oneOf": { "$ref": "#/definitions/schemaArray" },