diff --git a/app/core/constants.py b/app/core/constants.py
index 21d72aa..cbdfb8f 100644
--- a/app/core/constants.py
+++ b/app/core/constants.py
@@ -76,4 +76,15 @@ DEFAULT_SAFETY_SETTINGS = [
         {"category": "HARM_CATEGORY_SEXUALLY_EXPLICIT", "threshold": "OFF"},
         {"category": "HARM_CATEGORY_DANGEROUS_CONTENT", "threshold": "OFF"},
         {"category": "HARM_CATEGORY_CIVIC_INTEGRITY", "threshold": "BLOCK_NONE"},
-    ]
\ No newline at end of file
+    ]
+
+TTS_VOICE_NAMES = [
+    "Zephyr", "Puck", "Charon", "Kore",
+    "Fenrir", "Leda", "Orus", "Aoede",
+    "Callirhoe", "Autonoe", "Enceladus", "Iapetus",
+    "Umbriel", "Algieba", "Despina", "Erinome",
+    "Algenib", "Rasalgethi", "Laomedeia", "Achernar",
+    "Alnilam", "Schedar", "Gacrux", "Pulcherrima",
+    "Achird", "Zubenelgenubi", "Vindemiatrix", "Sadachbia",
+    "Sadaltager", "Sulafat"
+]
\ No newline at end of file
diff --git a/app/service/tts/tts_service.py b/app/service/tts/tts_service.py
index 99a6074..b7c19f0 100644
--- a/app/service/tts/tts_service.py
+++ b/app/service/tts/tts_service.py
@@ -8,6 +8,7 @@ from typing import Optional
 from google import genai
 
 from app.config.config import settings
+from app.core.constants import TTS_VOICE_NAMES
 from app.database.services import add_error_log, add_request_log
 from app.domain.openai_models import TTSRequest
 from app.log.logger import get_openai_logger
@@ -47,7 +48,7 @@ class TTSService:
                     "speech_config": {
                         "voice_config": {
                             "prebuilt_voice_config": {
-                                "voice_name": settings.TTS_VOICE_NAME
+                                "voice_name": request.voice if request.voice in TTS_VOICE_NAMES else settings.TTS_VOICE_NAME
                             }
                         }
                     },