diff --git a/exercises/isbn-verifier/canonical-data.json b/exercises/isbn-verifier/canonical-data.json
index 47d00213ba..808184397d 100644
--- a/exercises/isbn-verifier/canonical-data.json
+++ b/exercises/isbn-verifier/canonical-data.json
@@ -1,6 +1,6 @@
 {
     "exercise": "isbn-verifier",
-    "version": "2.0.0",
+    "version": "2.1.0",
     "comments": [
         "An expected value of true indicates a valid ISBN-10, ",
         "whereas false means the ISBN-10 is invalid."
@@ -9,79 +9,105 @@
         {
             "description": "valid isbn number",
             "property": "isValid",
-            "input": "3-598-21508-8",
+            "input": {
+              "isbn": "3-598-21508-8"
+            },
             "expected": true
         },
         {
             "description": "invalid isbn check digit",
             "property": "isValid",
-            "input": "3-598-21508-9",
+            "input": {
+              "isbn": "3-598-21508-9"
+            },
             "expected": false
         },
         {
             "description": "valid isbn number with a check digit of 10",
             "property": "isValid",
-            "input": "3-598-21507-X",
+            "input": {
+              "isbn": "3-598-21507-X"
+            },
             "expected": true
         },
         {
             "description": "check digit is a character other than X",
             "property": "isValid",
-            "input": "3-598-21507-A",
+            "input": {
+              "isbn": "3-598-21507-A"
+            },
             "expected": false
         },
         {
             "description": "invalid character in isbn",
             "property": "isValid",
-            "input": "3-598-2K507-0",
+            "input": {
+              "isbn": "3-598-2K507-0"
+            },
             "expected": false
         },
         {
             "description": "X is only valid as a check digit",
             "property": "isValid",
-            "input": "3-598-2X507-9",
+            "input": {
+              "isbn": "3-598-2X507-9"
+            },
             "expected": false
         },
         {
             "description": "valid isbn without separating dashes",
             "property": "isValid",
-            "input": "3598215088",
+            "input": {
+              "isbn": "3598215088"
+            },
             "expected": true
         },
         {
             "description": "isbn without separating dashes and X as check digit",
             "property": "isValid",
-            "input": "359821507X",
+            "input": {
+              "isbn": "359821507X"
+            },
             "expected": true
         },
         {
             "description": "isbn without check digit and dashes",
             "property": "isValid",
-            "input": "359821507",
+            "input": {
+              "isbn": "359821507"
+            },
             "expected": false
         },
         {
             "description": "too long isbn and no dashes",
             "property": "isValid",
-            "input": "3598215078X",
+            "input": {
+              "isbn": "3598215078X"
+            },
             "expected": false
         },
         {
             "description": "isbn without check digit",
             "property": "isValid",
-            "input": "3-598-21507",
+            "input": {
+              "isbn": "3-598-21507"
+            },
             "expected": false
         },
         {
             "description": "too long isbn",
             "property": "isValid",
-            "input": "3-598-21507-XX",
+            "input": {
+              "isbn": "3-598-21507-XX"
+            },
             "expected": false
         },
         {
             "description": "check digit of X should not be used for 0",
             "property": "isValid",
-            "input": "3-598-21515-X",
+            "input": {
+              "isbn": "3-598-21515-X"
+            },
             "expected": false
         }
     ]