diff --git a/data/src/commonMain/kotlin/com/wire/kalium/logic/data/client/ClientModel.kt b/data/src/commonMain/kotlin/com/wire/kalium/logic/data/client/ClientModel.kt
index 14e1bb132b0..ec562bd9319 100644
--- a/data/src/commonMain/kotlin/com/wire/kalium/logic/data/client/ClientModel.kt
+++ b/data/src/commonMain/kotlin/com/wire/kalium/logic/data/client/ClientModel.kt
@@ -69,8 +69,9 @@ enum class DeviceType {
     Unknown;
 }
 
-enum class ClientCapability {
-    LegalHoldImplicitConsent;
+sealed class ClientCapability {
+    data object LegalHoldImplicitConsent : ClientCapability()
+    data class Unknown(val name: String) : ClientCapability()
 }
 
 data class OtherUserClient(
diff --git a/logic/src/commonMain/kotlin/com/wire/kalium/logic/data/client/ClientMapper.kt b/logic/src/commonMain/kotlin/com/wire/kalium/logic/data/client/ClientMapper.kt
index 57b6d6c4148..f53feb17f5b 100644
--- a/logic/src/commonMain/kotlin/com/wire/kalium/logic/data/client/ClientMapper.kt
+++ b/logic/src/commonMain/kotlin/com/wire/kalium/logic/data/client/ClientMapper.kt
@@ -198,10 +198,12 @@ class ClientMapper(
 
     private fun toClientCapabilityDTO(clientCapability: ClientCapability): ClientCapabilityDTO = when (clientCapability) {
         ClientCapability.LegalHoldImplicitConsent -> ClientCapabilityDTO.LegalHoldImplicitConsent
+        is ClientCapability.Unknown -> ClientCapabilityDTO.Unknown(clientCapability.name)
     }
 
     private fun fromClientCapabilityDTO(clientCapabilityDTO: ClientCapabilityDTO): ClientCapability = when (clientCapabilityDTO) {
         ClientCapabilityDTO.LegalHoldImplicitConsent -> ClientCapability.LegalHoldImplicitConsent
+        is ClientCapabilityDTO.Unknown -> ClientCapability.Unknown(clientCapabilityDTO.name)
     }
 
     fun fromOtherUsersClientsDTO(otherUsersClients: List<ClientEntity>): List<OtherUserClient> =
diff --git a/network-model/src/commonMain/kotlin/com/wire/kalium/network/api/authenticated/client/ClientRequest.kt b/network-model/src/commonMain/kotlin/com/wire/kalium/network/api/authenticated/client/ClientRequest.kt
index 19021e85746..037cb6b8d16 100644
--- a/network-model/src/commonMain/kotlin/com/wire/kalium/network/api/authenticated/client/ClientRequest.kt
+++ b/network-model/src/commonMain/kotlin/com/wire/kalium/network/api/authenticated/client/ClientRequest.kt
@@ -22,8 +22,14 @@ import com.wire.kalium.network.api.authenticated.client.DeviceTypeDTO.Unknown
 import com.wire.kalium.network.api.authenticated.prekey.PreKeyDTO
 import com.wire.kalium.network.api.model.MLSPublicKey
 import com.wire.kalium.network.api.model.UserId
+import kotlinx.serialization.KSerializer
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.descriptors.PrimitiveKind
+import kotlinx.serialization.descriptors.PrimitiveSerialDescriptor
+import kotlinx.serialization.descriptors.SerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
 
 @Serializable
 data class RegisterClientRequest(
@@ -86,12 +92,31 @@ enum class DeviceTypeDTO {
     }
 }
 
-@Serializable
-enum class ClientCapabilityDTO {
+@Serializable(with = ClientCapabilityDTOSerializer::class)
+sealed class ClientCapabilityDTO {
     @SerialName("legalhold-implicit-consent")
-    LegalHoldImplicitConsent {
-        override fun toString(): String {
-            return "legalhold-implicit-consent"
+    data object LegalHoldImplicitConsent : ClientCapabilityDTO()
+    data class Unknown(val name: String) : ClientCapabilityDTO()
+}
+
+object ClientCapabilityDTOSerializer : KSerializer<ClientCapabilityDTO> {
+    override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor(
+        "ClientCapabilityDTO", PrimitiveKind.STRING
+    )
+
+    override fun serialize(encoder: Encoder, value: ClientCapabilityDTO) {
+        when (value) {
+            is ClientCapabilityDTO.LegalHoldImplicitConsent ->
+                encoder.encodeString("legalhold-implicit-consent")
+            is ClientCapabilityDTO.Unknown ->
+                encoder.encodeString(value.name)
+        }
+    }
+
+    override fun deserialize(decoder: Decoder): ClientCapabilityDTO {
+        return when (val value = decoder.decodeString()) {
+            "legalhold-implicit-consent" -> ClientCapabilityDTO.LegalHoldImplicitConsent
+            else -> ClientCapabilityDTO.Unknown(value)
         }
     }
 }