diff --git a/tgbotapi.core/api/tgbotapi.core.api b/tgbotapi.core/api/tgbotapi.core.api
index cea48d1a2d..854c849218 100644
--- a/tgbotapi.core/api/tgbotapi.core.api
+++ b/tgbotapi.core/api/tgbotapi.core.api
@@ -35061,3 +35061,12 @@ public final class dev/inmo/tgbotapi/utils/serializers/UnitFromBooleanSerializer
 	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lkotlin/Unit;)V
 }
 
+public final class dev/inmo/tgbotapi/utils/serializers/UsernameAtLessSerializer : kotlinx/serialization/KSerializer {
+	public static final field INSTANCE Ldev/inmo/tgbotapi/utils/serializers/UsernameAtLessSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize-BnpbnlE (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/String;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize-eC7Nk8U (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/String;)V
+}
+
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/KeyboardButtonRequestManagedBot.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/KeyboardButtonRequestManagedBot.kt
index 6a617c482f..0665d9be90 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/KeyboardButtonRequestManagedBot.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/buttons/KeyboardButtonRequestManagedBot.kt
@@ -2,6 +2,7 @@ package dev.inmo.tgbotapi.types.buttons
 
 import dev.inmo.tgbotapi.types.*
 import dev.inmo.tgbotapi.types.request.RequestId
+import dev.inmo.tgbotapi.utils.serializers.UsernameAtLessSerializer
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 
@@ -17,6 +18,16 @@ data class KeyboardButtonRequestManagedBot(
     @SerialName(suggestedNameField)
     val suggestedName: String? = null,
     @SerialName(suggestedUsernameField)
+    @Serializable(UsernameAtLessSerializer::class)
     val suggestedUsername: Username? = null
 )
 
+/**
+ * A type alias for the `KeyboardButtonRequestManagedBot` class representing the parameters
+ * for managing a bot request in a keyboard button.
+ *
+ * This type encapsulates properties such as:
+ * - A unique request identifier (`requestId`).
+ * - Suggested name and username for the bot (`suggestedName` and `suggestedUsername`).
+ */
+typealias RequestManagedBotParameters = KeyboardButtonRequestManagedBot
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/serializers/UsernameAtLessSerializer.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/serializers/UsernameAtLessSerializer.kt
new file mode 100644
index 0000000000..ef993f07a5
--- /dev/null
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/serializers/UsernameAtLessSerializer.kt
@@ -0,0 +1,21 @@
+package dev.inmo.tgbotapi.utils.serializers
+
+import dev.inmo.tgbotapi.types.Username
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.builtins.serializer
+import kotlinx.serialization.descriptors.SerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
+
+object UsernameAtLessSerializer : KSerializer<Username> {
+    override val descriptor: SerialDescriptor
+        get() = String.serializer().descriptor
+
+    override fun serialize(encoder: Encoder, value: Username) {
+        value.withoutAt.let(encoder::encodeString)
+    }
+
+    override fun deserialize(decoder: Decoder): Username {
+        return Username.prepare(decoder.decodeString())
+    }
+}
\ No newline at end of file