From a7963406b3540d75a1321eeb098cebb6e1a6488a Mon Sep 17 00:00:00 2001
From: "tao.chen" <93983997+taochen-ct@users.noreply.github.com>
Date: Thu, 6 Aug 2026 10:55:12 +0800
Subject: [PATCH] fix: default kernel

---
 runtime/src/runtime/process.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/runtime/src/runtime/process.py b/runtime/src/runtime/process.py
index e073bd7..cbe9600 100644
--- a/runtime/src/runtime/process.py
+++ b/runtime/src/runtime/process.py
@@ -69,7 +69,7 @@ JUPYTER_MAX_LIFETIME_SECONDS = int(
 # which also registers the Python 3.8 / 3.10 kernelspecs under that venv's
 # share/jupyter/kernels tree. The runtime only launches the server here;
 # user code runs in the per-kernel venv the user picks in the Notebook UI.
-JUPYTER_VENV = os.environ.get("JUPYTER_VENV", "/opt/venv/python3.8")
+JUPYTER_VENV = os.environ.get("JUPYTER_VENV", "/opt/venv/python3.12")
 JUPYTER_BIN = os.path.join(JUPYTER_VENV, "bin", "jupyter")
 
 # Sidecar metadata file written next to the workspace directory. Holds