diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Birthdate.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Birthdate.kt
new file mode 100644
index 0000000000..4a0ddd7e45
--- /dev/null
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/Birthdate.kt
@@ -0,0 +1,19 @@
+package dev.inmo.tgbotapi.types
+
+import korlibs.time.Date
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class Birthdate(
+    @SerialName(dayField)
+    val day: Int,
+    @SerialName(monthField)
+    val month: Int,
+    @SerialName(yearField)
+    val year: Int
+) {
+    val date: Date by lazy {
+        Date(year, month, day)
+    }
+}
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 60fd4e8c02..8cd24f3675 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
@@ -151,6 +151,7 @@ const val profileAccentColorIdField = "profile_accent_color_id"
 const val backgroundCustomEmojiIdField = "background_custom_emoji_id"
 const val profileBackgroundCustomEmojiIdField = "profile_background_custom_emoji_id"
 const val personalChatField = "personal_chat"
+const val birthdateField = "birthdate"
 const val hasVisibleHistoryField = "has_visible_history"
 const val unrestrictBoostsCountField = "unrestrict_boost_count"
 const val customEmojiStickerSetNameField = "custom_emoji_sticker_set_name"
@@ -592,3 +593,7 @@ const val businessConnectionIdField = "business_connection_id"
 const val businessIntroField = "business_intro"
 const val businessLocationField = "business_location"
 const val businessOpeningHoursField = "business_opening_hours"
+
+const val dayField = "day"
+const val monthField = "month"
+const val yearField = "year"
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 b1e4ce9666..ef27cd7486 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
@@ -133,6 +133,8 @@ data class ExtendedPrivateChatImpl(
     override val businessLocation: BusinessLocation? = null,
     @SerialName(businessOpeningHoursField)
     override val businessOpeningHours: BusinessOpeningHours? = null,
+    @SerialName(birthdateField)
+    override val birthdate: Birthdate? = null,
     @SerialName(personalChatField)
     @Serializable(PreviewChatSerializer::class)
     override val personalChat: PreviewChannelChat? = null
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ExtendedAbstracts.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ExtendedAbstracts.kt
index f6b6bee834..bc1fe8a3ee 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ExtendedAbstracts.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/ExtendedAbstracts.kt
@@ -46,6 +46,7 @@ sealed interface ExtendedPrivateChat : PrivateChat, ExtendedChatWithUsername, Ex
     val businessLocation: BusinessLocation?
     val businessOpeningHours: BusinessOpeningHours?
 
+    val birthdate: Birthdate?
     val personalChat: PreviewChannelChat?
 
     val allowCreateUserIdLink: Boolean