diff --git a/src/assistant/lib/tts/models/models.py b/src/assistant/lib/tts/models/models.py
index 14ee677..1b28da1 100644
--- a/src/assistant/lib/tts/models/models.py
+++ b/src/assistant/lib/tts/models/models.py
@@ -7,6 +7,7 @@ class TTSRequestModel(pydantic.BaseModel):
     model_config = pydantic.ConfigDict(use_enum_values=True)
 
     voice_model_name: tts_models_voice.YandexVoiceModelNamesString
+    audio_content: bytes
 
 
 class TTSResponseModel(pydantic.BaseModel):