diff --git a/tests/draft-next/optional/refOfUnknownKeyword.json b/tests/draft-next/optional/refOfUnknownKeyword.json
index c832e09f..50ee1fce 100644
--- a/tests/draft-next/optional/refOfUnknownKeyword.json
+++ b/tests/draft-next/optional/refOfUnknownKeyword.json
@@ -21,6 +21,28 @@
             }
         ]
     },
+    {
+        "description": "reference of a root arbitrary keyword with encoded ref",
+        "schema": {
+            "$schema": "https://json-schema.org/draft/next/schema",
+            "unknown/keyword": {"type": "integer"},
+            "properties": {
+                "bar": {"$ref": "#/unknown~1keyword"}
+            }
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": {"bar": 3},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"bar": true},
+                "valid": false
+            }
+        ]
+    },
     {
         "description": "reference of an arbitrary keyword of a sub-schema",
         "schema": {
@@ -65,5 +87,27 @@
                 "valid": false
             }
         ]
+    },
+    {
+        "description": "reference of an arbitrary keyword of a sub-schema with encoded ref",
+        "schema": {
+            "$schema": "https://json-schema.org/draft/next/schema",
+            "properties": {
+                "foo": {"unknown/keyword": {"type": "integer"}},
+                "bar": {"$ref": "#/properties/foo/unknown~1keyword"}
+            }
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": {"bar": 3},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"bar": true},
+                "valid": false
+            }
+        ]
     }
 ]
diff --git a/tests/draft2019-09/optional/refOfUnknownKeyword.json b/tests/draft2019-09/optional/refOfUnknownKeyword.json
index e9a75dd1..2db52308 100644
--- a/tests/draft2019-09/optional/refOfUnknownKeyword.json
+++ b/tests/draft2019-09/optional/refOfUnknownKeyword.json
@@ -21,6 +21,28 @@
             }
         ]
     },
+    {
+        "description": "reference of a root arbitrary keyword with encoded ref",
+        "schema": {
+            "$schema": "https://json-schema.org/draft/2019-09/schema",
+            "unknown/keyword": {"type": "integer"},
+            "properties": {
+                "bar": {"$ref": "#/unknown~1keyword"}
+            }
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": {"bar": 3},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"bar": true},
+                "valid": false
+            }
+        ]
+    },
     {
         "description": "reference of an arbitrary keyword of a sub-schema",
         "schema": {
@@ -65,5 +87,27 @@
                 "valid": false
             }
         ]
+    },
+    {
+        "description": "reference of an arbitrary keyword of a sub-schema with encoded ref",
+        "schema": {
+            "$schema": "https://json-schema.org/draft/2019-09/schema",
+            "properties": {
+                "foo": {"unknown/keyword": {"type": "integer"}},
+                "bar": {"$ref": "#/properties/foo/unknown~1keyword"}
+            }
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": {"bar": 3},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"bar": true},
+                "valid": false
+            }
+        ]
     }
 ]
diff --git a/tests/draft2020-12/optional/refOfUnknownKeyword.json b/tests/draft2020-12/optional/refOfUnknownKeyword.json
index c2b080a1..8276affe 100644
--- a/tests/draft2020-12/optional/refOfUnknownKeyword.json
+++ b/tests/draft2020-12/optional/refOfUnknownKeyword.json
@@ -21,6 +21,28 @@
             }
         ]
     },
+    {
+        "description": "reference of a root arbitrary keyword with encoded ref",
+        "schema": {
+            "$schema": "https://json-schema.org/draft/2020-12/schema",
+            "unknown/keyword": {"type": "integer"},
+            "properties": {
+                "bar": {"$ref": "#/unknown~1keyword"}
+            }
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": {"bar": 3},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"bar": true},
+                "valid": false
+            }
+        ]
+    },
     {
         "description": "reference of an arbitrary keyword of a sub-schema",
         "schema": {
@@ -65,5 +87,27 @@
                 "valid": false
             }
         ]
+    },
+    {
+        "description": "reference of an arbitrary keyword of a sub-schema with encoded ref",
+        "schema": {
+            "$schema": "https://json-schema.org/draft/2020-12/schema",
+            "properties": {
+                "foo": {"unknown/keyword": {"type": "integer"}},
+                "bar": {"$ref": "#/properties/foo/unknown~1keyword"}
+            }
+        },
+        "tests": [
+            {
+                "description": "match",
+                "data": {"bar": 3},
+                "valid": true
+            },
+            {
+                "description": "mismatch",
+                "data": {"bar": true},
+                "valid": false
+            }
+        ]
     }
 ]