# AMPL Installation Wizard

Here are instructions to upgrade AMPL-Gurobi on macOS:

1. Extract the contents of the supplied AMPL-Gurobi file. Extraction is done with the following command:

       tar xvfz amplgurobi11.0.3_mac64.tar.gz

   The file name should be adjusted to reflect the actual archive file. Extraction will produce a subdirectory called `ampl`, which contains the AMPL-Gurobi software.
2. Copy your existing `ampl.lic` license key to the `ampl` directory that was created in the previous step.
3. Replace your old AMPL directory with the new one.
4. If you are using a floating license server for AMPL-Gurobi, please follow the additional instructions for ampl_lic.