diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Common.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Common.kt
index 4abe77e2e3..d8de107a3c 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Common.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Common.kt
@@ -159,6 +159,7 @@ const val hasVisibleHistoryField = "has_visible_history"
 const val unrestrictBoostsCountField = "unrestrict_boost_count"
 const val customEmojiStickerSetNameField = "custom_emoji_sticker_set_name"
 const val iconCustomEmojiIdField = "icon_custom_emoji_id"
+const val hasMainWebAppField = "has_main_web_app"
 const val canJoinGroupsField = "can_join_groups"
 const val canReadAllGroupMessagesField = "can_read_all_group_messages"
 const val canReplyField = "can_reply"
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/Extended.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/Extended.kt
index 58419106df..5dc0f90985 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/Extended.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/Extended.kt
@@ -308,6 +308,8 @@ data class ExtendedBot(
     override val profileBackgroundCustomEmojiId: CustomEmojiId? = null,
     @SerialName(maxReactionCountField)
     override val maxReactionsCount: Int = 3,
+    @SerialName(hasMainWebAppField)
+    val hasMainWebApp: Boolean = false
 ) : Bot(), ExtendedChat {
     @SerialName(isBotField)
     private val isBot = true