diff --git a/README.md b/README.md
index 17ea624..150cde1 100644
--- a/README.md
+++ b/README.md
@@ -105,13 +105,13 @@ The `ChatMember` object now has two new fields:
 
 #### Object `Chat`
 The `Chat` object now has two new fields:
-- `is_verified`: bool, default false. Is the chat verified by Telegram, clients show a verified batch
-- `is_scam`: bool, default false. Is the chat reported for scam, clients show a warning to the user
+- `is_verified`: bool, optional, default false. Is the chat verified by Telegram, clients show a verified batch
+- `is_scam`: bool, optional, default false. Is the chat reported for scam, clients show a warning to the user
 
 #### Object `User`
 The `User` object now has two new fields:
-- `is_verified`: bool, default false. Is the user verified by Telegram, clients show a verified batch
-- `is_scam`: bool, default false. Is the user reported for scam, clients show a warning to the user
+- `is_verified`: bool, optional, default false. Is the user verified by Telegram, clients show a verified batch
+- `is_scam`: bool, optional, default false. Is the user reported for scam, clients show a warning to the user
 
 In addition, the member list now shows the full bot list (previously only the bot that executed the query was shown)