Week 3 Lab is hanging and Warning msg

I am doing week 3 lab, however, it is hanging when I executed the 2nd to the last step (it says it will take 20-30 minutes, but it has been over an hour)
There is a warning msg “Detected kernel version 4.14.336, which is below the recommended minimum of 5.5.0; this can cause the process to hang. It is recommended to upgrade the kernel to the minimum version or higher.”
Question: how do I upgrade Kernel?

Hello @Patti

Can you try this in the notebook

pip install --upgrade notebook

see if this works