diff --git a/exercises/run-length-encoding/canonical-data.json b/exercises/run-length-encoding/canonical-data.json
index 0381482776..55266bd28a 100644
--- a/exercises/run-length-encoding/canonical-data.json
+++ b/exercises/run-length-encoding/canonical-data.json
@@ -1,81 +1,99 @@
 {
-   "encode": {
+  "exercise": "run-length-encoding",
+  "version": "1.0.0",
+  "cases": [
+    {
       "description": "run-length encode a string",
       "cases": [
-          {
-            "description": "empty string",
-            "input": "",
-            "expected": ""
-          },
-          {
-            "description": "single characters only are encoded without count",
-            "input": "XYZ",
-            "expected": "XYZ"
-          },
-          {
-            "description": "string with no single characters",
-            "input": "AABBBCCCC",
-            "expected": "2A3B4C"
-          },
-          {
-            "description": "single characters mixed with repeated characters",
-            "input": "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWB",
-            "expected": "12WB12W3B24WB"
-          },
-          {
-            "description": "multiple whitespace mixed in string",
-            "input": "  hsqq qww  ",
-            "expected": "2 hs2q q2w2 "
-          },
-          {
-            "description": "lowercase characters",
-            "input": "aabbbcccc",
-            "expected": "2a3b4c"
-          }
+        {
+          "description": "empty string",
+          "property": "encode",
+          "input": "",
+          "expected": ""
+        },
+        {
+          "description": "single characters only are encoded without count",
+          "property": "encode",
+          "input": "XYZ",
+          "expected": "XYZ"
+        },
+        {
+          "description": "string with no single characters",
+          "property": "encode",
+          "input": "AABBBCCCC",
+          "expected": "2A3B4C"
+        },
+        {
+          "description": "single characters mixed with repeated characters",
+          "property": "encode",
+          "input": "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWB",
+          "expected": "12WB12W3B24WB"
+        },
+        {
+          "description": "multiple whitespace mixed in string",
+          "property": "encode",
+          "input": "  hsqq qww  ",
+          "expected": "2 hs2q q2w2 "
+        },
+        {
+          "description": "lowercase characters",
+          "property": "encode",
+          "input": "aabbbcccc",
+          "expected": "2a3b4c"
+        }
       ]
-   },
-   "decode": {
+    },
+    {
       "description": "run-length decode a string",
       "cases": [
-          {
-            "description": "empty string",
-            "input": "",
-            "expected": ""
-          },
-          {
-            "description": "single characters only",
-            "input": "XYZ",
-            "expected": "XYZ"
-          },
-          {
-            "description": "string with no single characters",
-            "input": "2A3B4C",
-            "expected": "AABBBCCCC"
-          },
-          {
-            "description": "single characters with repeated characters",
-            "input": "12WB12W3B24WB",
-            "expected": "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWB"
-          },
-          {
-            "description": "multiple whitespace mixed in string",
-            "input": "2 hs2q q2w2 ",
-            "expected": "  hsqq qww  "
-          },
-          {
-            "description": "lower case string",
-            "input": "2a3b4c",
-            "expected": "aabbbcccc"
-          }
+        {
+          "description": "empty string",
+          "property": "decode",
+          "input": "",
+          "expected": ""
+        },
+        {
+          "description": "single characters only",
+          "property": "decode",
+          "input": "XYZ",
+          "expected": "XYZ"
+        },
+        {
+          "description": "string with no single characters",
+          "property": "decode",
+          "input": "2A3B4C",
+          "expected": "AABBBCCCC"
+        },
+        {
+          "description": "single characters with repeated characters",
+          "property": "decode",
+          "input": "12WB12W3B24WB",
+          "expected": "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWB"
+        },
+        {
+          "description": "multiple whitespace mixed in string",
+          "property": "decode",
+          "input": "2 hs2q q2w2 ",
+          "expected": "  hsqq qww  "
+        },
+        {
+          "description": "lower case string",
+          "property": "decode",
+          "input": "2a3b4c",
+          "expected": "aabbbcccc"
+        }
       ]
-   },
-   "consistency": {
+    },
+    {
+      "description": "encode and then decode",
       "cases": [
-          {
-            "description": "encode followed by decode gives original string",
-            "input": "zzz ZZ  zZ",
-            "expected": "zzz ZZ  zZ"
-          }
+        {
+          "description": "encode followed by decode gives original string",
+          "property": "consistency",
+          "input": "zzz ZZ  zZ",
+          "expected": "zzz ZZ  zZ"
+        }
       ]
-   }
+    }
+  ]
 }