diff --git a/runtime/src/runtime/process.py b/runtime/src/runtime/process.py
index 5e73f34..599cef9 100644
--- a/runtime/src/runtime/process.py
+++ b/runtime/src/runtime/process.py
@@ -204,6 +204,7 @@ async def start_workspace(ws_id: str) -> dict:
             f"--ServerApp.token={token}",
             f"--ServerApp.base_url={base_path}",
             f"--notebook-dir={workspace_path}",
+            f"--ServerApp.root_dir={workspace_path}",
             "--ServerApp.terminals_enabled=False",
             "--NotebookApp.terminals_enabled=False",
             "--ServerApp.allow_origin=*",
@@ -215,7 +216,7 @@ async def start_workspace(ws_id: str) -> dict:
         try:
             process, log_file = start_process(
                 cmd,
-                workspace_path.as_posix(),
+                WORKSPACES_ROOT,
                 env={"PATH": f"/app/.venv/bin:{os.environ.get('PATH', '')}"},
             )
         except Exception as e: