diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/ChannelChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/ChannelChat.kt
index 2a6043809f..3e42f887d1 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/ChannelChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/ChannelChat.kt
@@ -1,3 +1,7 @@
 package dev.inmo.tgbotapi.types.chat.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewChatSerializer
+import kotlinx.serialization.Serializable
+
+@Serializable(PreviewChatSerializer::class)
 interface ChannelChat : SuperPublicChat
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/GroupChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/GroupChat.kt
index 849d6b9e3a..591a565624 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/GroupChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/GroupChat.kt
@@ -1,3 +1,7 @@
 package dev.inmo.tgbotapi.types.chat.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewChatSerializer
+import kotlinx.serialization.Serializable
+
+@Serializable(PreviewChatSerializer::class)
 interface GroupChat : PublicChat
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PrivateChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PrivateChat.kt
index 2459398282..65a254544b 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PrivateChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PrivateChat.kt
@@ -1,5 +1,9 @@
 package dev.inmo.tgbotapi.types.chat.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewChatSerializer
+import kotlinx.serialization.Serializable
+
+@Serializable(PreviewChatSerializer::class)
 interface PrivateChat : Chat, UsernameChat {
     val firstName: String
     val lastName: String
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PublicChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PublicChat.kt
index 98c70cec84..f78e434f44 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PublicChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/PublicChat.kt
@@ -1,5 +1,9 @@
 package dev.inmo.tgbotapi.types.chat.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewChatSerializer
+import kotlinx.serialization.Serializable
+
+@Serializable(PreviewChatSerializer::class)
 interface PublicChat : Chat {
     val title: String
 }
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/SuperPublicChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/SuperPublicChat.kt
index 0403f89fa6..ce290dbe2f 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/SuperPublicChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/SuperPublicChat.kt
@@ -1,3 +1,7 @@
 package dev.inmo.tgbotapi.types.chat.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewChatSerializer
+import kotlinx.serialization.Serializable
+
+@Serializable(PreviewChatSerializer::class)
 interface SuperPublicChat : PublicChat, UsernameChat
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/SupergroupChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/SupergroupChat.kt
index f49d4d144f..d4ad4d90d2 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/SupergroupChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/SupergroupChat.kt
@@ -1,3 +1,7 @@
 package dev.inmo.tgbotapi.types.chat.abstracts
 
+import dev.inmo.tgbotapi.types.chat.PreviewChatSerializer
+import kotlinx.serialization.Serializable
+
+@Serializable(PreviewChatSerializer::class)
 interface SupergroupChat : GroupChat, SuperPublicChat
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/UsernameChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/UsernameChat.kt
index 99ced04a6a..eb2149799f 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/UsernameChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/UsernameChat.kt
@@ -1,7 +1,10 @@
 package dev.inmo.tgbotapi.types.chat.abstracts
 
 import dev.inmo.tgbotapi.types.Username
+import dev.inmo.tgbotapi.types.chat.PreviewChatSerializer
+import kotlinx.serialization.Serializable
 
+@Serializable(PreviewChatSerializer::class)
 interface UsernameChat : Chat {
     val username: Username?
 }
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedChannelChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedChannelChat.kt
index cbda4c68db..e21d2e314b 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedChannelChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedChannelChat.kt
@@ -1,8 +1,11 @@
 package dev.inmo.tgbotapi.types.chat.abstracts.extended
 
 import dev.inmo.tgbotapi.types.ChatId
+import dev.inmo.tgbotapi.types.chat.ExtendedChatSerializer
 import dev.inmo.tgbotapi.types.chat.abstracts.ChannelChat
+import kotlinx.serialization.Serializable
 
+@Serializable(ExtendedChatSerializer::class)
 interface ExtendedChannelChat : ChannelChat, ExtendedPublicChat {
     val linkedGroupChatId: ChatId?
 }
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedGroupChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedGroupChat.kt
index df9c9e157b..a24939a299 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedGroupChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedGroupChat.kt
@@ -1,8 +1,11 @@
 package dev.inmo.tgbotapi.types.chat.abstracts.extended
 
 import dev.inmo.tgbotapi.types.chat.ChatPermissions
+import dev.inmo.tgbotapi.types.chat.ExtendedChatSerializer
 import dev.inmo.tgbotapi.types.chat.abstracts.GroupChat
+import kotlinx.serialization.Serializable
 
+@Serializable(ExtendedChatSerializer::class)
 interface ExtendedGroupChat : GroupChat, ExtendedPublicChat {
     val permissions: ChatPermissions
 }
\ No newline at end of file
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 297c7f3986..55a03723a5 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
@@ -1,7 +1,10 @@
 package dev.inmo.tgbotapi.types.chat.abstracts.extended
 
+import dev.inmo.tgbotapi.types.chat.ExtendedChatSerializer
 import dev.inmo.tgbotapi.types.chat.abstracts.PrivateChat
+import kotlinx.serialization.Serializable
 
+@Serializable(ExtendedChatSerializer::class)
 interface ExtendedPrivateChat : PrivateChat, ExtendedChat {
     val bio: String
 }
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedSupergroupChat.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedSupergroupChat.kt
index 75ef3df3f6..fc50b3bd37 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedSupergroupChat.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/chat/abstracts/extended/ExtendedSupergroupChat.kt
@@ -1,8 +1,11 @@
 package dev.inmo.tgbotapi.types.chat.abstracts.extended
 
 import dev.inmo.tgbotapi.types.*
+import dev.inmo.tgbotapi.types.chat.ExtendedChatSerializer
 import dev.inmo.tgbotapi.types.chat.abstracts.SupergroupChat
+import kotlinx.serialization.Serializable
 
+@Serializable(ExtendedChatSerializer::class)
 interface ExtendedSupergroupChat : SupergroupChat, ExtendedGroupChat {
     val slowModeDelay: Long?
     val stickerSetName: StickerSetName?