# Cell Execution Timeout¶

By default, nbconvert (which is used to execute the notebooks during the Sphinx build process) will give a cell 30 seconds to execute before it times out.

If you would like to change the amount of time given for a cell, you can change the timeout length for all notebooks by setting the following option in conf.py:

nbsphinx_timeout = 60


Or change the timeout length on a per-notebook basis by adding this to the notebook’s JSON metadata:

"nbsphinx": {
"timeout": 60
},


The timeout is given in seconds, use -1 to disable the timeout.

Alternatively, you can manually execute the notebook in question and save the results, see the pre-executed example notebook.