diff --git a/frontend/Dockerfile b/frontend/Dockerfile
index 3122a0f..ba230d3 100644
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -7,7 +7,7 @@ COPY . .
 RUN npm run build
 
 # --- serve stage ---
-FROM nginx:1.27-alpine
+FROM nginx:1.31.2-alpine
 COPY --from=build /app/dist /usr/share/nginx/html
 COPY nginx.conf /etc/nginx/conf.d/default.conf
 EXPOSE 80