LORD ABBETT INVESTMENT TRUST AMENDMENT TO DECLARATION AND AGREEMENT OF TRUST

Exhibit 99(a)(xxiii)

LORD XXXXXX INVESTMENT TRUST

AMENDMENT TO
DECLARATION AND AGREEMENT OF TRUST

The undersigned, being at least a majority of the Trustees of Lord Xxxxxx Investment Trust, a Delaware statutory trust (the “Trust”) organized pursuant to a Declaration and Agreement of Trust dated August 16, 1993 (the “Declaration”), do hereby, pursuant to Section 5.3 of the Declaration: (i) establish two new series of shares of the Trust to be designated as the “Lord Xxxxxx Corporate Bond Fund” and the “Lord Xxxxxx Short Duration Core Bond Fund”; (ii) establish the following classes of the Lord Xxxxxx Corporate Bond Fund: Class A, Class C, Class F, Class F3, Class I, Class R2, Class R3, Class R4, Class R5, Class R6, and Class T; and (iii) establish the following classes of the Lord Xxxxxx Short Duration Core Bond Fund: Class A, Class C, Class F, Class F3, Class I, Class R2, Class R3, Class R4, Class R5, Class R6, and Class T. Any variations as to purchase price, determination of net asset value, the price, terms and manner of redemption and special and relative rights as to dividends on liquidation, and conditions under which each such series or class shall have separate voting rights, shall be as set forth in the Declaration or as elsewhere determined by the Board of Trustees of the Trust.

This instrument shall constitute an amendment to the Declaration.

IN WITNESS WHEREOF, the undersigned have executed this instrument this 15^th day of December 2016.

/s/ Xxxxx X. Xxxxxx		/s/ Xxxxx X. Xxxx
Xxxxx X. Xxxxxx		Xxxxx X. Xxxx
/s/ X. Xxxxxx Xxxxxxx		/s/ Xxxxxxxx X. Xxxxx
X. Xxxxxx Xxxxxxx		Xxxxxxxx X. Xxxxx
/s/ Xxxxxx X. Xxxxxxx, Xx.		/s/ Xxxxx X. XxXxxxxxx
Xxxxxx X. Xxxxxxx, Xx.		Xxxxx X. XxXxxxxxx
/s/ Xxxx X. Fast		/s/ Xxxxx L.L. Xxxxxx
Xxxx C. Fast		Xxxxx L.L. Xxxxxx
/s/ Xxxxxx X. Xxxxxxxx		/s/ Xxxx X. Xxxxxx
Xxxxxx X. Xxxxxxxx		Xxxx X. Xxxxxx
/s/ Xxxxxxx X. Xxxx
Xxxxxxx X. Xxxx