diff --git a/packages/services/voice-service/src/api/test_tts.py b/packages/services/voice-service/src/api/test_tts.py
index 36a2757..cc60abe 100644
--- a/packages/services/voice-service/src/api/test_tts.py
+++ b/packages/services/voice-service/src/api/test_tts.py
@@ -284,6 +284,7 @@ async def stt_transcribe(request: Request, audio: UploadFile = File(...)):
 def _get_openai_client():
     """Lazy-init OpenAI client with proxy support."""
     from openai import OpenAI
+    import httpx
     api_key = os.environ.get("OPENAI_API_KEY")
     base_url = os.environ.get("OPENAI_BASE_URL")
     if not api_key:
@@ -291,6 +292,8 @@ def _get_openai_client():
     kwargs = {"api_key": api_key}
     if base_url:
         kwargs["base_url"] = base_url
+        # Disable SSL verification for self-signed proxy certs
+        kwargs["http_client"] = httpx.Client(verify=False)
     return OpenAI(**kwargs)