diff --git a/backend/Dockerfile b/backend/Dockerfile
index eb08873..398351e 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -6,7 +6,7 @@ COPY alembic.ini ./
 COPY migrations ./migrations
 COPY pyproject.toml uv.lock ./
 RUN UV_DEFAULT_INDEX="https://pypi.tuna.tsinghua.edu.cn/simple/" uv lock && \
-    UV_DEFAULT_INDEX="https://pypi.tuna.tsinghua.edu.cn/simple/" uv sync --frozen --no-dev --no-editable --package backend
+    UV_DEFAULT_INDEX="https://pypi.tuna.tsinghua.edu.cn/simple/" uv sync --no-dev --no-editable --package backend
 
 EXPOSE 8000
 CMD ["gunicorn", "--config", "backend/gunicorn.conf.py", "backend.main:app"]