diff --git a/backend/app/services/gemini_service.py b/backend/app/services/gemini_service.py
index f118064..13939e2 100755
--- a/backend/app/services/gemini_service.py
+++ b/backend/app/services/gemini_service.py
@@ -22,7 +22,7 @@ class GeminiService:
             api_key: Google Gemini API key
         """
         self.client = genai.Client(api_key=api_key)
-        self.model = "gemini-3-pro-preview"
+        self.model = "gemini-3.1-pro-preview"
 
     async def analyze_with_image(
         self,