diff --git a/CHANGELOG.md b/CHANGELOG.md
index e29dd5a7be..8d81011c81 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
         section
         * New field `dropPendingUpdates`. It works the same as `drop_pending_updates` in [setWebhook](https://core.telegram.org/bots/api#setwebhook)
         section
+    * New field `ExtendedPrivateChat#bio`
 
 ## 0.29.4
 
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 97e8e46d07..1452412f73 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
@@ -247,6 +247,7 @@ const val userField = "user"
 const val dateField = "date"
 const val chatField = "chat"
 const val usernameField = "username"
+const val bioField = "bio"
 const val nameField = "name"
 const val emailField = "email"
 const val locationField = "location"
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedPrivateChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedPrivateChat.kt
index e88ca5fa9f..297c7f3986 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedPrivateChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedPrivateChat.kt
@@ -2,4 +2,6 @@ package dev.inmo.tgbotapi.types.chat.abstracts.extended
 
 import dev.inmo.tgbotapi.types.chat.abstracts.PrivateChat
 
-interface ExtendedPrivateChat : PrivateChat, ExtendedChat
+interface ExtendedPrivateChat : PrivateChat, ExtendedChat {
+    val bio: String
+}
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/extended/ExtendedPrivateChatImpl.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/extended/ExtendedPrivateChatImpl.kt
index d507fcfea3..4c1d9702de 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/extended/ExtendedPrivateChatImpl.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/extended/ExtendedPrivateChatImpl.kt
@@ -16,5 +16,7 @@ data class ExtendedPrivateChatImpl(
     @SerialName(firstNameField)
     override val firstName: String = "",
     @SerialName(lastNameField)
-    override val lastName: String = ""
+    override val lastName: String = "",
+    @SerialName(bioField)
+    override val bio: String = ""
 ) : ExtendedPrivateChat