diff --git a/exercises/rational-numbers/canonical-data.json b/exercises/rational-numbers/canonical-data.json
index 0ee600acd9..82335b8d12 100644
--- a/exercises/rational-numbers/canonical-data.json
+++ b/exercises/rational-numbers/canonical-data.json
@@ -400,6 +400,38 @@
             "r": [0, 1]
           },
           "expected": 1.0
+        },
+        {
+          "uuid": "da137f1c-fc94-4035-9813-94f5152a1102",
+          "description": "Raise a negative real number to a rational number that has been reduced",
+          "property": "expreal",
+          "input": {
+            "x": -1,
+            "r": [1, 1]
+          },
+          "expected": -1.0
+        },
+        {
+          "uuid": "9abd9332-eeab-4139-afa2-2f82efdae421",
+          "description": "Raise a negative real number to a rational number that has not been reduced",
+          "property": "expreal",
+          "input": {
+            "x": -1,
+            "r": [2, 2]
+          },
+          "expected": -1.0
+        },
+        {
+          "uuid": "f3734f78-91b2-4e59-905e-8c61dbf34f39",
+          "description": "Fails with a negative real number if the denominator of the reduced rational number is even",
+          "property": "expreal",
+          "input": {
+            "x": -1,
+            "r": [1, 2]
+          },
+          "expected": {
+            "error": "the result of this operation is a complex number"
+          }
         }
       ]
     },