It shall be the duty of the City Clerk or someone authorized and directed by him or her to keep up-to-date the certified copy or copies of the book containing the Code required to be filed in the office of the City Clerk for the use of the public. All changes in said Code and all legislation adopted by the City Council subsequent to the effective date of this codification which the City Council shall adopt specifically as part of the Code shall, when finally adopted, be included therein by reference until such changes or new legislation are printed as supplements to said Code books, at which time such supplements shall be inserted therein.