diff --git a/lib/meilisearch.dart b/lib/meilisearch.dart
index 3f07dca..05fc054 100644
--- a/lib/meilisearch.dart
+++ b/lib/meilisearch.dart
@@ -350,6 +350,7 @@ Future<Note> createNote(String content) async {
   final document = {
     'id': generateRandomString(32),
     'date': DateTime.now().toUtc().millisecondsSinceEpoch,
+    'dateISO': DateTime.now().toUtc().toIso8601String(),
     'content': content,
     'topLetter': mostFrequentLetter,
     'topLetterFrequency': mostFrequentLetterCount,
@@ -433,6 +434,10 @@ Future<void> updateNote(Note note) async {
     'id': note.id,
     'content': trimmedContent,
     'date': note.epochTime,
+    'dateISO':
+        DateTime.fromMillisecondsSinceEpoch(
+          note.epochTime,
+        ).toUtc().toIso8601String(),
     'topLetter': mostFrequentLetter,
     'topLetterFrequency': mostFrequentLetterRatio,
   };