Invalid default value when using defaultNow()

Invalid default value for 'updated_at' (errno 1067) (sqlstate 42000) (CallerID: 2ga5bxx7mhtso265npy7): Sql: "alter table menus add UNIQUE INDEX menus_public_id_idx (public_id)", BindVars: {REDACTED}`

Invalid default value for 'updated_at' (errno 1067) (sqlstate 42000) (CallerID: 2ga5bxx7mhtso265npy7): Sql: "alter table menus add UNIQUE INDEX menus_public_id_idx (public_id)", BindVars: {REDACTED}`