diff --git a/tests/draft-next/optional/format/uri-reference.json b/tests/draft-next/optional/format/uri-reference.json
index 8d9d254e..e966532a 100644
--- a/tests/draft-next/optional/format/uri-reference.json
+++ b/tests/draft-next/optional/format/uri-reference.json
@@ -70,6 +70,16 @@
                 "description": "an invalid URI fragment",
                 "data": "#frag\\ment",
                 "valid": false
+            },
+            {
+                "description": "unescaped non US-ASCII characters",
+                "data": "/foobar®.txt",
+                "valid": false
+            },
+            {
+                "description": "invalid backslash character",
+                "data": "https://example.org/foobar\\.txt",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft-next/optional/format/uri.json b/tests/draft-next/optional/format/uri.json
index 50908eab..ca9beea1 100644
--- a/tests/draft-next/optional/format/uri.json
+++ b/tests/draft-next/optional/format/uri.json
@@ -135,6 +135,56 @@
                 "description": "an invalid URI with comma in scheme",
                 "data": "bar,baz:foo",
                 "valid": false
+            },
+            {
+                "description": "invalid userinfo",
+                "data": "https://[@example.org/test.txt",
+                "valid": false
+            },
+            {
+                "description": "unescaped non US-ASCII characters",
+                "data": "https://example.org/foobar®.txt",
+                "valid": false
+            },
+            {
+                "description": "invalid backslash character",
+                "data": "https://example.org/foobar\\.txt",
+                "valid": false
+            },
+            {
+                "description": "invalid \" character",
+                "data": "https://example.org/foobar\".txt",
+                "valid": false
+            },
+            {
+                "description": "invalid <> characters",
+                "data": "https://example.org/foobar<>.txt",
+                "valid": false
+            },
+            {
+                "description": "invalid {} characters",
+                "data": "https://example.org/foobar{}.txt",
+                "valid": false
+            },
+            {
+                "description": "invalid ^ character",
+                "data": "https://example.org/foobar^.txt",
+                "valid": false
+            },
+            {
+                "description": "invalid ` character",
+                "data": "https://example.org/foobar`.txt",
+                "valid": false
+            },
+            {
+                "description": "invalid SPACE character",
+                "data": "https://example.org/foo bar.txt",
+                "valid": false
+            },
+            {
+                "description": "invalid | character",
+                "data": "https://example.org/foobar|.txt",
+                "valid": false
             }
         ]
     }