diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6216320bc9..660e7d2e5b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,8 @@
     * `UserForwardedMessage` -> `UserForwardInfo`
     * `ForwardedFromChannelMessage` -> `ForwardFromChannelInfo`
     * `PossiblyForwardedMessage#forwarded` field now renamed to `forwardInfo`
+* All serializers in library now are `internal`. **If you have used some of them or I have marked as internal by a
+mistake - don't hesitate to say this.**
 * Most part of requests have changed return type. They are listed below:
     <details>
     
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/abstracts/InputFile.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/abstracts/InputFile.kt
index 2c5fbd5b94..6c2f6c96d9 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/abstracts/InputFile.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/abstracts/InputFile.kt
@@ -21,7 +21,7 @@ data class FileId(
 fun String.toInputFile(): InputFile = FileId(this)
 
 @Serializer(InputFile::class)
-object InputFileSerializer : KSerializer<InputFile> {
+internal object InputFileSerializer : KSerializer<InputFile> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName(FileId::class.toString())
     override fun serialize(encoder: Encoder, obj: InputFile) = encoder.encodeString(obj.fileId)
     override fun deserialize(decoder: Decoder): FileId = FileId(decoder.decodeString())
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/answers/AnswerInlineQuery.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/answers/AnswerInlineQuery.kt
index 21fba40d00..e31f1c7eb0 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/answers/AnswerInlineQuery.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/answers/AnswerInlineQuery.kt
@@ -51,6 +51,6 @@ fun InlineQuery.createAnswer(
     switchPmParameter
 )
 
-object InlineQueryAnswersResultsSerializer: KSerializer<List<InlineQueryResult>> by ArrayListSerializer(
+internal object InlineQueryAnswersResultsSerializer: KSerializer<List<InlineQueryResult>> by ArrayListSerializer(
     InlineQueryResultSerializer
 )
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/answers/payments/AnswerShippingQuery.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/answers/payments/AnswerShippingQuery.kt
index 2439e5f41d..70d9d8626c 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/answers/payments/AnswerShippingQuery.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/answers/payments/AnswerShippingQuery.kt
@@ -21,7 +21,7 @@ data class AnswerShippingQueryOk(
         get() = serializer()
 }
 
-object ShippingOptionsSerializer : KSerializer<List<ShippingOption>> by ArrayListSerializer(
+internal object ShippingOptionsSerializer : KSerializer<List<ShippingOption>> by ArrayListSerializer(
     ShippingOption.serializer()
 )
 
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/games/abstracts/GetGameHighScores.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/games/abstracts/GetGameHighScores.kt
index 216cdfb9e9..0915454e86 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/games/abstracts/GetGameHighScores.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/requests/games/abstracts/GetGameHighScores.kt
@@ -15,4 +15,4 @@ interface GetGameHighScores : SimpleRequest<List<GameHighScore>> {
         get() = GameHighScoresSerializer
 }
 
-object GameHighScoresSerializer : KSerializer<List<GameHighScore>> by ArrayListSerializer(GameHighScore.serializer())
+internal object GameHighScoresSerializer : KSerializer<List<GameHighScore>> by ArrayListSerializer(GameHighScore.serializer())
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InlineQueryResult/serializers/InlineQueryResultSerializer.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InlineQueryResult/serializers/InlineQueryResultSerializer.kt
index 8b346927a9..e114e76a84 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InlineQueryResult/serializers/InlineQueryResultSerializer.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InlineQueryResult/serializers/InlineQueryResultSerializer.kt
@@ -6,7 +6,7 @@ import kotlinx.serialization.*
 import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(InlineQueryResult::class)
-object InlineQueryResultSerializer : KSerializer<InlineQueryResult> {
+internal object InlineQueryResultSerializer : KSerializer<InlineQueryResult> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName(InlineQueryResult::class.toString())
     override fun serialize(encoder: Encoder, obj: InlineQueryResult) {
         when(obj) {
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InputMessageContentSerializer.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InputMessageContentSerializer.kt
index 77c3fa4486..4eca591bbe 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InputMessageContentSerializer.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InlineQueries/InputMessageContentSerializer.kt
@@ -6,7 +6,7 @@ import kotlinx.serialization.*
 import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(InputMessageContent::class)
-object InputMessageContentSerializer : KSerializer<InputMessageContent> {
+internal object InputMessageContentSerializer : KSerializer<InputMessageContent> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName(InputMessageContent::class.toString())
     override fun serialize(encoder: Encoder, obj: InputMessageContent) {
         when (obj) {
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaSerializer.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaSerializer.kt
index fd4b3f9266..72b2f98050 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaSerializer.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/InputMediaSerializer.kt
@@ -4,7 +4,7 @@ import kotlinx.serialization.*
 import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(InputMedia::class)
-object InputMediaSerializer : KSerializer<InputMedia> {
+internal object InputMediaSerializer : KSerializer<InputMedia> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName(InputMedia::class.toString())
     override fun serialize(encoder: Encoder, obj: InputMedia) {
         when (obj) {
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/MediaGroupMemberInputMediaSerializer.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/MediaGroupMemberInputMediaSerializer.kt
index c435bef316..235b67e871 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/MediaGroupMemberInputMediaSerializer.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/InputMedia/MediaGroupMemberInputMediaSerializer.kt
@@ -4,7 +4,7 @@ import kotlinx.serialization.*
 import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(MediaGroupMemberInputMedia::class)
-object MediaGroupMemberInputMediaSerializer : KSerializer<MediaGroupMemberInputMedia> {
+internal object MediaGroupMemberInputMediaSerializer : KSerializer<MediaGroupMemberInputMedia> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName(MediaGroupMemberInputMedia::class.toString())
     override fun serialize(encoder: Encoder, obj: MediaGroupMemberInputMedia) {
         when (obj) {
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/UserProfilePhotos.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/UserProfilePhotos.kt
index f54cf75787..133610427b 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/UserProfilePhotos.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/UserProfilePhotos.kt
@@ -13,6 +13,6 @@ data class UserProfilePhotos (
     val photos: List<Photo>
 )
 
-object UserProfilePhotosPhotosSerializer : KSerializer<List<Photo>> by ArrayListSerializer(
+internal object UserProfilePhotosPhotosSerializer : KSerializer<List<Photo>> by ArrayListSerializer(
     PhotoSerializer
 )
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/InlineKeyboardButtons/InlineKeyboardButtonSerializer.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/InlineKeyboardButtons/InlineKeyboardButtonSerializer.kt
index 4ee83f2133..317cc57901 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/InlineKeyboardButtons/InlineKeyboardButtonSerializer.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/InlineKeyboardButtons/InlineKeyboardButtonSerializer.kt
@@ -5,7 +5,7 @@ import kotlinx.serialization.*
 import kotlinx.serialization.internal.StringDescriptor
 import kotlinx.serialization.json.*
 
-object InlineKeyboardButtonSerializer : KSerializer<InlineKeyboardButton> {
+internal object InlineKeyboardButtonSerializer : KSerializer<InlineKeyboardButton> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName("com.github.insanusmokrassar.TelegramBotAPI.types.buttons.InlineKeyboardButtons.InlineKeyboardButton")
 
     private fun resolveSerializer(json: JsonObject): KSerializer<out InlineKeyboardButton> {
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/KeyboardMarkupSerializer.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/KeyboardMarkupSerializer.kt
index d69825d7c2..aabea0e57a 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/KeyboardMarkupSerializer.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/buttons/KeyboardMarkupSerializer.kt
@@ -4,7 +4,7 @@ import kotlinx.serialization.*
 import kotlinx.serialization.internal.StringDescriptor
 
 @Serializer(KeyboardMarkup::class)
-object KeyboardMarkupSerializer : KSerializer<KeyboardMarkup> {
+internal object KeyboardMarkupSerializer : KSerializer<KeyboardMarkup> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName(KeyboardMarkup::class.toString())
     override fun serialize(encoder: Encoder, obj: KeyboardMarkup) {
         when(obj) {
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/chat/ChatSerializers.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/chat/ChatSerializers.kt
index 9745f0c2da..9eaa11d5d8 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/chat/ChatSerializers.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/chat/ChatSerializers.kt
@@ -11,7 +11,7 @@ import kotlinx.serialization.json.JsonObjectSerializer
 
 private val formatter = Json.nonstrict
 
-object PreviewChatSerializer : KSerializer<Chat> {
+internal object PreviewChatSerializer : KSerializer<Chat> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName("PreviewChatSerializer")
 
     override fun deserialize(decoder: Decoder): Chat {
@@ -39,7 +39,7 @@ object PreviewChatSerializer : KSerializer<Chat> {
     }
 }
 
-object ExtendedChatSerializer : KSerializer<ExtendedChat> {
+internal object ExtendedChatSerializer : KSerializer<ExtendedChat> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName("PreviewChatSerializer")
 
     override fun deserialize(decoder: Decoder): ExtendedChat {
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/files/PhotoSize.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/files/PhotoSize.kt
index d42e3c4669..93f9ae1b39 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/files/PhotoSize.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/files/PhotoSize.kt
@@ -13,7 +13,7 @@ fun Photo.biggest(): PhotoSize? = maxBy {
     it.resolution
 }
 
-object PhotoSerializer : KSerializer<Photo> by ArrayListSerializer(
+internal object PhotoSerializer : KSerializer<Photo> by ArrayListSerializer(
     PhotoSize.serializer()
 )
 
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/payments/ShippingOption.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/payments/ShippingOption.kt
index ebdc3866db..95ab6ca48a 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/payments/ShippingOption.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/payments/ShippingOption.kt
@@ -16,6 +16,6 @@ data class ShippingOption(
     override val prices: List<LabeledPrice>
 ) : Priced
 
-object LabeledPricesSerializer : KSerializer<List<LabeledPrice>> by ArrayListSerializer(
+internal object LabeledPricesSerializer : KSerializer<List<LabeledPrice>> by ArrayListSerializer(
     LabeledPrice.serializer()
 )
diff --git a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/polls/PollOption.kt b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/polls/PollOption.kt
index c29522aeb5..63eef91eaf 100644
--- a/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/polls/PollOption.kt
+++ b/src/commonMain/kotlin/com/github/insanusmokrassar/TelegramBotAPI/types/polls/PollOption.kt
@@ -19,7 +19,7 @@ data class AnonymousPollOption (
     override val votes: Int
 ) : PollOption()
 
-object PollOptionSerializer : KSerializer<PollOption> {
+internal object PollOptionSerializer : KSerializer<PollOption> {
     override val descriptor: SerialDescriptor = StringDescriptor.withName(PollOption::class.simpleName ?: "PollOption")
 
     override fun deserialize(decoder: Decoder): PollOption = AnonymousPollOption.serializer().deserialize(