diff --git a/exercises/luhn/canonical-data.json b/exercises/luhn/canonical-data.json
index e9014c2504..77a66679d9 100644
--- a/exercises/luhn/canonical-data.json
+++ b/exercises/luhn/canonical-data.json
@@ -1,67 +1,82 @@
 {
-  "valid": [
+  "exercise": "luhn",
+  "version": "1.0.0",
+  "cases": [
     {
       "description": "single digit strings can not be valid",
+      "property": "valid",
       "input": "1",
       "expected": false
     },
     {
       "description": "A single zero is invalid",
+      "property": "valid",
       "input": "0",
       "expected": false
     },
     {
       "description": "a simple valid SIN that remains valid if reversed",
+      "property": "valid",
       "input": "059",
       "expected": true
     },
     {
       "description": "a simple valid SIN that becomes invalid if reversed",
+      "property": "valid",
       "input": "59",
       "expected": true
     },
     {
       "description": "a valid Canadian SIN",
+      "property": "valid",
       "input": "055 444 285",
       "expected": true
     },
     {
       "description": "invalid Canadian SIN",
+      "property": "valid",
       "input": "055 444 286",
       "expected": false
     },
     {
       "description": "invalid credit card",
+      "property": "valid",
       "input": "8273 1232 7352 0569",
       "expected": false
     },
     {
       "description": "valid strings with a non-digit included become invalid",
+      "property": "valid",
       "input": "055a 444 285",
       "expected": false
     },
     {
       "description": "valid strings with punctuation included become invalid",
+      "property": "valid",
       "input": "055-444-285",
       "expected": false
     },
     {
       "description": "valid strings with symbols included become invalid",
+      "property": "valid",
       "input": "055£ 444$ 285",
       "expected": false
     },
     {
       "description": "single zero with space is invalid",
+      "property": "valid",
       "input": " 0",
       "expected": false
     },
     {
       "description": "more than a single zero is valid",
+      "property": "valid",
       "input": "0000 0",
       "expected": true
     },
     {
       "description": "input digit 9 is correctly converted to output digit 9",
+      "property": "valid",
       "input": "091",
       "expected": true
     }