State Street Bank and Trust Company One Lincoln Street Boston, MA 02111 December 31, 2020 Ladies and Gentlemen:

Exhibit (g)(7)

State Street Bank and Trust Company

Xxx Xxxxxxx Xxxxxx

Boston, MA 02111

December 31, 2020

Ladies and Gentlemen:

Reference is made to the Custodian Agreement between State Street Bank and Trust Company and State Street Master Funds (the “Trust”) dated March 1, 2000, as amended (the “Agreement”).

Pursuant to the Agreement, this letter is to provide notice of the creation of two additional portfolios of the Trust (the “New Portfolios”):

Portfolio		Effective Date
•  State Street International Developed Equity Index Portfolio		April 14, 2016
•  State Street ESG Liquid Reserves Portfolio		May 17, 2019

We request that you act as the New Portfolio’s Custodian under the Agreement. As compensation for such services, you shall be entitled to receive from the New Portfolio the annual fee reflected on the fee schedule to the Agreement.

Please be advised that, pursuant to the Agreement, the undersigned Trust is providing notice that the following funds have been liquidated and are removed from the Schedule of Series:

Portfolio Name		Effective Date
State Street Tax Free Money Market Portfolio		December 15, 2015
State Street Equity 500 Index Portfolio		June 17, 2019

Please indicate your acceptance of the foregoing by executing two copies of this letter, returning one to the Trust and retaining one copy for your records.

Very Truly Yours,
State Street Master Funds
By:		/s/ Xxxxx X. Xxxxxxx
		Xxxxx X. Xxxxxxx
		President
Accepted:
State Street Bank and Trust Company
By:		/s/ Xxxxx Xxxx
		Xxxxx Xxxx
		Managing Director