diff --git a/runtime/Dockerfile b/runtime/Dockerfile
index 3ab9720..b2df1d7 100644
--- a/runtime/Dockerfile
+++ b/runtime/Dockerfile
@@ -37,7 +37,9 @@ COPY common ./common
 COPY runtime ./runtime
 RUN UV_DEFAULT_INDEX="https://pypi.tuna.tsinghua.edu.cn/simple/" uv sync --frozen --no-dev --no-editable --package runtime
 
-COPY overrides.json /app/.venv/share/jupyter/lab/settings/overrides.json
+RUN mkdir -p /root/.jupyter/custom /app/.venv/share/jupyter/custom
+RUN echo '#top-panel { display: none !important; height: 0 !important; }' > /root/.jupyter/custom/custom.css && \
+    cp /root/.jupyter/custom/custom.css /app/.venv/share/jupyter/custom/custom.css
 
 EXPOSE 8000
 CMD ["uv", "run", "--frozen", "--package", "runtime", "gunicorn", "--config", "runtime/gunicorn.conf.py", "runtime.main:app"]
diff --git a/runtime/overrides.json b/runtime/overrides.json
deleted file mode 100644
index 30bbed3..0000000
--- a/runtime/overrides.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "@jupyterlab/apputils-extension:themes": {
-    "rawOverrides": "#top-panel { display: none !important; height: 0 !important; }"
-  }
-}
\ No newline at end of file