Conn. Gen. Stat. § 33-1140: Authority to amend.

(a) A corporation may amend its certificate of incorporation at any time to add or change a provision that is required or permitted in the certificate of incorporation or to delete a provision not required in the certificate of incorporation. Whether a provision is required or permitted in the certificate of incorporation is determined as of the effective date of the amendment.

(b) A member of the corporation does not have a vested property right resulting from any provision in the certificate of incorporation, including provisions relating to management, control, purpose or duration of the corporation.