diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/EncryptedAddress.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/EncryptedAddress.kt
index f31177f85b..e4db912d94 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/EncryptedAddress.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/EncryptedAddress.kt
@@ -10,6 +10,7 @@ import kotlinx.serialization.Serializable
 @Serializable
 data class EncryptedAddress(
     @SerialName(dataField)
+    @Serializable(Base64StringSerializer::class)
     override val data: EncryptedData,
     @Serializable(Base64StringSerializer::class)
     override val hash: String
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/Passport.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/Passport.kt
index 1073ea4a79..fc856e0303 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/Passport.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/Passport.kt
@@ -13,6 +13,7 @@ sealed class Passport : WithData, WithFrontSide, WithSelfie, Translatable
 @Serializable
 data class CommonPassport(
     @SerialName(dataField)
+    @Serializable(Base64StringSerializer::class)
     override val data: EncryptedData,
     @SerialName(frontSideField)
     override val frontSide: PassportFile? = null,
@@ -27,6 +28,7 @@ data class CommonPassport(
 @Serializable
 data class InternalPassport(
     @SerialName(dataField)
+    @Serializable(Base64StringSerializer::class)
     override val data: EncryptedData,
     @SerialName(frontSideField)
     override val frontSide: PassportFile? = null,
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/TranslatableIDDocument.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/TranslatableIDDocument.kt
index dcad6fd43a..45d874c784 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/TranslatableIDDocument.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/passport/encrypted_data/TranslatableIDDocument.kt
@@ -13,6 +13,7 @@ sealed class TranslatableIDDocument : WithData, WithFrontSide, WithReverseSide,
 @Serializable
 data class DriverLicense(
     @SerialName(dataField)
+    @Serializable(Base64StringSerializer::class)
     override val data: EncryptedData,
     @SerialName(frontSideField)
     override val frontSide: PassportFile? = null,
@@ -30,6 +31,7 @@ data class DriverLicense(
 @Serializable
 data class IdentityCard(
     @SerialName(dataField)
+    @Serializable(Base64StringSerializer::class)
     override val data: EncryptedData,
     @SerialName(frontSideField)
     override val frontSide: PassportFile? = null,