diff --git a/test-schema.json b/test-schema.json
index 0087c5e3..24c3924f 100644
--- a/test-schema.json
+++ b/test-schema.json
@@ -11,6 +11,10 @@
         "type": "object",
         "required": [ "description", "schema", "tests" ],
         "properties": {
+            "id": {
+                "description": "A stable, unique identifier for this test case. Must be unique within the version. Should never change even if the description or other properties change.",
+                "type": "string"
+            },
             "description": {
                 "description": "The test case description",
                 "type": "string"
@@ -102,6 +106,10 @@
             "type": "object",
             "required": [ "description", "data", "valid" ],
             "properties": {
+                "id": {
+                    "description": "A stable, unique identifier for this test. Must be unique within the test case. Should never change even if the description or other properties change.",
+                    "type": "string"
+                },
                 "description": {
                     "description": "The test description, briefly explaining which behavior it exercises",
                     "type": "string"
@@ -121,4 +129,4 @@
             "additionalProperties": false
         }
     }
-}
+}
\ No newline at end of file