diff --git a/extras/requirements-py310 b/extras/requirements-py310
index fe84b78..8a49b77 100644
--- a/extras/requirements-py310
+++ b/extras/requirements-py310
@@ -1,4 +1,6 @@
 # this is not system dependences
+jupyter
+notebook
 ipykernel
 nbclient
 nbformat
diff --git a/extras/requirements-py38 b/extras/requirements-py38
index fe84b78..8a49b77 100644
--- a/extras/requirements-py38
+++ b/extras/requirements-py38
@@ -1,4 +1,6 @@
 # this is not system dependences
+jupyter
+notebook
 ipykernel
 nbclient
 nbformat
diff --git a/runtime/src/runtime/process.py b/runtime/src/runtime/process.py
index e5dd9fa..e073bd7 100644
--- a/runtime/src/runtime/process.py
+++ b/runtime/src/runtime/process.py
@@ -69,8 +69,8 @@ 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_PY312_VENV = os.environ.get("JUPYTER_PY312_VENV", "/opt/venv/python3.12")
-JUPYTER_BIN = os.path.join(JUPYTER_PY312_VENV, "bin", "jupyter")
+JUPYTER_VENV = os.environ.get("JUPYTER_VENV", "/opt/venv/python3.8")
+JUPYTER_BIN = os.path.join(JUPYTER_VENV, "bin", "jupyter")
 
 # Sidecar metadata file written next to the workspace directory. Holds
 # the runtime state we need to reconstruct the in-memory map after a
@@ -226,9 +226,9 @@ async def start_workspace(ws_id: str) -> dict:
         # venv. VIRTUAL_ENV makes `python` / `pip` resolve against it; PATH
         # prepended so its `bin/` wins over the runtime's /app/.venv.
         jupyter_env = os.environ.copy()
-        jupyter_env["VIRTUAL_ENV"] = JUPYTER_PY312_VENV
+        jupyter_env["VIRTUAL_ENV"] = JUPYTER_VENV
         jupyter_env["PATH"] = (
-            os.path.join(JUPYTER_PY312_VENV, "bin")
+            os.path.join(JUPYTER_VENV, "bin")
             + os.pathsep
             + jupyter_env.get("PATH", "")
         )