diff --git a/exercises/rotational-cipher/canonical-data.json b/exercises/rotational-cipher/canonical-data.json
index 1df03c7b52..f69c934f0a 100644
--- a/exercises/rotational-cipher/canonical-data.json
+++ b/exercises/rotational-cipher/canonical-data.json
@@ -1,70 +1,84 @@
 {
-    "#": [
-        "The tests are a series of rotation tests: "
-    ],
-    "rotate": {
-        "description": ["Test rotation from English to ROTn"],
-        "cases": [
-            {
-                "description": "rotate a by 1",
-                "text": "a",
-                "shift_key": 1,
-                "expected": "b"
-            },
-            {
-                "description": "rotate a by 26, same output as input",
-                "text": "a",
-                "shift_key": 26,
-                "expected": "a"
-            },
-            {
-                "description": "rotate a by 0, same output as input",
-                "text": "a",
-                "shift_key": 0,
-                "expected": "a"
-            },
-            {
-                "description": "rotate m by 13",
-                "text": "m",
-                "shift_key": 13,
-                "expected": "z"
-            },
-            {
-                "description": "rotate n by 13 with wrap around alphabet",
-                "text": "n",
-                "shift_key": 13,
-                "expected": "a"
-            },
-            {
-                "description": "rotate capital letters",
-                "text": "OMG",
-                "shift_key": 5,
-                "expected": "TRL"
-            },
-            {
-                "description": "rotate spaces",
-                "text": "O M G",
-                "shift_key": 5,
-                "expected": "T R L"
-            },
-            {
-                "description": "rotate numbers",
-                "text": "Testing 1 2 3 testing",
-                "shift_key": 4,
-                "expected": "Xiwxmrk 1 2 3 xiwxmrk"
-            },
-            {
-                "description": "rotate punctuation",
-                "text": "Let's eat, Grandma!",
-                "shift_key": 21,
-                "expected": "Gzo'n zvo, Bmviyhv!"
-            },
-            {
-                "description": "rotate all letters",
-                "text": "The quick brown fox jumps over the lazy dog.",
-                "shift_key": 13,
-                "expected": "Gur dhvpx oebja sbk whzcf bire gur ynml qbt."
-            }
-        ]
+  "exercise": "rotational-cipher",
+  "version": "1.0.0",
+  "comments": [
+    "The tests are a series of rotation tests: "
+  ],
+  "cases": [
+    {
+      "description": "Test rotation from English to ROTn",
+      "cases": [
+        {
+          "description": "rotate a by 1",
+          "property": "rotate",
+          "text": "a",
+          "shiftKey": 1,
+          "expected": "b"
+        },
+        {
+          "description": "rotate a by 26, same output as input",
+          "property": "rotate",
+          "text": "a",
+          "shiftKey": 26,
+          "expected": "a"
+        },
+        {
+          "description": "rotate a by 0, same output as input",
+          "property": "rotate",
+          "text": "a",
+          "shiftKey": 0,
+          "expected": "a"
+        },
+        {
+          "description": "rotate m by 13",
+          "property": "rotate",
+          "text": "m",
+          "shiftKey": 13,
+          "expected": "z"
+        },
+        {
+          "description": "rotate n by 13 with wrap around alphabet",
+          "property": "rotate",
+          "text": "n",
+          "shiftKey": 13,
+          "expected": "a"
+        },
+        {
+          "description": "rotate capital letters",
+          "property": "rotate",
+          "text": "OMG",
+          "shiftKey": 5,
+          "expected": "TRL"
+        },
+        {
+          "description": "rotate spaces",
+          "property": "rotate",
+          "text": "O M G",
+          "shiftKey": 5,
+          "expected": "T R L"
+        },
+        {
+          "description": "rotate numbers",
+          "property": "rotate",
+          "text": "Testing 1 2 3 testing",
+          "shiftKey": 4,
+          "expected": "Xiwxmrk 1 2 3 xiwxmrk"
+        },
+        {
+          "description": "rotate punctuation",
+          "property": "rotate",
+          "text": "Let's eat, Grandma!",
+          "shiftKey": 21,
+          "expected": "Gzo'n zvo, Bmviyhv!"
+        },
+        {
+          "description": "rotate all letters",
+          "property": "rotate",
+          "text": "The quick brown fox jumps over the lazy dog.",
+          "shiftKey": 13,
+          "expected": "Gur dhvpx oebja sbk whzcf bire gur ynml qbt."
+        }
+      ]
     }
+  ]
 }