TypeError when running enzymatic constraints problem

[thuwilliamwyx]

When I want to run an enzymatic constraints problem, the program raise: TypeError: Solver.add_constraint() got an unexpected keyword argument 'update'. It focus on: cobra\simulation.py", line 75, in pFBA, solver.add_constraint('obj', objective, '>', obj_frac * pre_solution.fobj, update=False)

Should I make some options before running an enzymatic constraints problem? Thanks a lot.