diff --git a/exercises/nth-prime/canonical-data.json b/exercises/nth-prime/canonical-data.json
index 86ecaba1c8..4c8f30deed 100644
--- a/exercises/nth-prime/canonical-data.json
+++ b/exercises/nth-prime/canonical-data.json
@@ -1,34 +1,41 @@
 {
-  "#": [
+  "exercise": "nth-prime",
+  "version": "1.0.0",
+  "comments": [
     "The tests that expect 'false' should be implemented to raise",
     "an error, or indicate a failure. Implement this in a way that",
     "makes sense for your language."
   ],
   "cases": [
     {
-       "description": "first prime",
-       "input": 1,
-       "expected": 2
+      "description": "first prime",
+      "property": "prime",
+      "input": 1,
+      "expected": 2
     },
     {
-       "description": "second prime",
-       "input": 2,
-       "expected": 3
+      "description": "second prime",
+      "property": "prime",
+      "input": 2,
+      "expected": 3
     },
     {
-       "description": "sixth prime",
-       "input": 6,
-       "expected": 13
+      "description": "sixth prime",
+      "property": "prime",
+      "input": 6,
+      "expected": 13
     },
     {
-       "description": "big prime",
-       "input": 10001,
-       "expected": 104743
+      "description": "big prime",
+      "property": "prime",
+      "input": 10001,
+      "expected": 104743
     },
     {
-       "description": "there is no zeroth prime",
-       "input": 0,
-       "expected": false
+      "description": "there is no zeroth prime",
+      "property": "prime",
+      "input": 0,
+      "expected": false
     }
   ]
 }