diff --git a/tests/draft-next/optional/format/date.json b/tests/draft-next/optional/format/date.json
index aa55555c..6cea531a 100644
--- a/tests/draft-next/optional/format/date.json
+++ b/tests/draft-next/optional/format/date.json
@@ -240,6 +240,11 @@
                 "description": "ISO8601 / non-RFC3339: week number rollover to next year (2023-01-01)",
                 "data": "2022W527",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft-next/optional/format/time.json b/tests/draft-next/optional/format/time.json
index 0a000a48..041d18c8 100644
--- a/tests/draft-next/optional/format/time.json
+++ b/tests/draft-next/optional/format/time.json
@@ -230,6 +230,11 @@
                 "description": "contains letters",
                 "data": "ab:cd:ef",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft2019-09/optional/format/date.json b/tests/draft2019-09/optional/format/date.json
index 805888c2..1ba5d9ca 100644
--- a/tests/draft2019-09/optional/format/date.json
+++ b/tests/draft2019-09/optional/format/date.json
@@ -240,6 +240,11 @@
                 "description": "ISO8601 / non-RFC3339: week number rollover to next year (2023-01-01)",
                 "data": "2022W527",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft2019-09/optional/format/time.json b/tests/draft2019-09/optional/format/time.json
index dadaae6a..95d9c1db 100644
--- a/tests/draft2019-09/optional/format/time.json
+++ b/tests/draft2019-09/optional/format/time.json
@@ -230,6 +230,11 @@
                 "description": "contains letters",
                 "data": "ab:cd:ef",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft2020-12/optional/format/date.json b/tests/draft2020-12/optional/format/date.json
index dfb1c80a..01731c34 100644
--- a/tests/draft2020-12/optional/format/date.json
+++ b/tests/draft2020-12/optional/format/date.json
@@ -240,6 +240,11 @@
                 "description": "ISO8601 / non-RFC3339: week number rollover to next year (2023-01-01)",
                 "data": "2022W527",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft2020-12/optional/format/time.json b/tests/draft2020-12/optional/format/time.json
index 8967932e..88980ebb 100644
--- a/tests/draft2020-12/optional/format/time.json
+++ b/tests/draft2020-12/optional/format/time.json
@@ -230,6 +230,11 @@
                 "description": "contains letters",
                 "data": "ab:cd:ef",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft3/optional/format/date.json b/tests/draft3/optional/format/date.json
index 796bc463..15e52c5a 100644
--- a/tests/draft3/optional/format/date.json
+++ b/tests/draft3/optional/format/date.json
@@ -162,6 +162,11 @@
                 "description": "invalidates non-padded day dates",
                 "data": "1998-01-1",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft3/optional/format/time.json b/tests/draft3/optional/format/time.json
index 36c823e6..e023b96c 100644
--- a/tests/draft3/optional/format/time.json
+++ b/tests/draft3/optional/format/time.json
@@ -12,6 +12,11 @@
                 "description": "an invalid time string",
                 "data": "8:30 AM",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft7/optional/format/date.json b/tests/draft7/optional/format/date.json
index d723124a..2cfdcf3f 100644
--- a/tests/draft7/optional/format/date.json
+++ b/tests/draft7/optional/format/date.json
@@ -237,6 +237,11 @@
                 "description": "ISO8601 / non-RFC3339: week number rollover to next year (2023-01-01)",
                 "data": "2022W527",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft7/optional/format/time.json b/tests/draft7/optional/format/time.json
index 014ecd8d..d7a993e3 100644
--- a/tests/draft7/optional/format/time.json
+++ b/tests/draft7/optional/format/time.json
@@ -227,6 +227,11 @@
                 "description": "contains letters",
                 "data": "ab:cd:ef",
                 "valid": false
+            },
+            {
+                "description": "an invalid time string in date-time format",
+                "data": "2020-11-28T23:55:45Z",
+                "valid": false
             }
         ]
     }