diff --git a/src/assistant/lib/tts/repositories/base.py b/src/assistant/lib/tts/repositories/base.py
index 6d1ce15..5978061 100644
--- a/src/assistant/lib/tts/repositories/base.py
+++ b/src/assistant/lib/tts/repositories/base.py
@@ -11,24 +11,25 @@ class TTSBaseRepository(abc.ABC):
 
     @property
     @abc.abstractmethod
-    def voice_models(self) -> models.LIST_VOICE_MODELS_TYPE:
+    async def voice_models(self) -> models.LIST_VOICE_MODELS_TYPE:
         raise NotImplementedError
 
     @abc.abstractmethod
-    def get_audio_as_bytes(self, request: models.TTSCreateRequestModel) -> models.TTSCreateResponseModel:
+    async def get_audio_as_bytes(self, request: models.TTSCreateRequestModel) -> models.TTSCreateResponseModel:
         raise NotImplementedError
 
-    def get_voice_model_by_name(self, voice_model_name: str) -> models.BaseVoiceModel | None:
+    async def get_voice_model_by_name(self, voice_model_name: str) -> models.BaseVoiceModel | None:
         """
         Search voice model by name
         :param voice_model_name: String name
         :return: Voice model that match the name
         """
-        for voice_model in self.voice_models.models:
+        voice_models = await self.voice_models
+        for voice_model in voice_models.models:
             if voice_model.voice_name == voice_model_name:
                 return voice_model
 
-    def get_list_voice_models_by_fields(
+    async def get_list_voice_models_by_fields(
         self, fields: models.TTSSearchVoiceRequestModel
     ) -> list[models.AVAILABLE_MODELS_TYPE]:
         """
@@ -38,7 +39,8 @@ class TTSBaseRepository(abc.ABC):
         """
         fields_dump = fields.model_dump(exclude_none=True)
         voice_models_response = []
-        for voice_model in self.voice_models.models:
+        voice_models = await self.voice_models
+        for voice_model in voice_models.models:
             for field, field_value in fields_dump.items():
                 if field == "languages":  # language is a list
                     language_names: set[str] = {item.name for item in field_value}