Amendment To Participation Agreement among MassMutual Life Insurance Company, DFA Investment Dimensions Group Inc., Dimensional Fund Advisors LP and DFA Securities LLC

1.

Provision of Fund Documents; Website Posting.

(i)

Summary Prospectus for each of the Portfolios [Rule 498A(j)(l )(iii)];

(ii)

Statutory Prospectus for each of the Portfolios [Rule 498AU){l)(iii)];

(iii)

Statement of Additional Information (“SAI’ ‘) for each of the Portfolios [Rule 498A(j)(l)(iii)];

(iv)

Most Recent Annual and Semi-Annual Reports to Shareholders (under Rule 30e-l under the ▇▇▇▇ ▇▇▇) for the Portfolios (together, the “Share- holder Reports”) (referred to in Rule 30e-3 as the “ Current” and “Prior” Report to Shareholders) [Rule 30e-3(b)(l)(i) and (ii)].

(v)

Complete Portfolio Holdings from the Shareholder Reports Containing a Summary Schedule of Investments (the “Complete Portfolio Holdings”) [Rule 30e-3(b)(l)(iii)]; and

(vi)

Portfolio Holdings for Most Recent First and Third Fiscal Quarters (and together with the Complete Portfolio Holdings, the “Portfolio Holdings”) [Rule 30e-3(b)(1)(iv)].

(i)

The Fund agrees to provide or make available the Summary Prospectus, Statutory Prospectus, and SAT for the Portfolios and amendments thereto (“Offering Documents”) to the Company (or its designee), to the extent specified in Rule 498A and within a time frame reasonably designed to assist the Company in complying with the Company’s Website posting obligations under Rule 498A, as the Company may reasonably request sufficiently in advance, in order to facilitate the Company’s continuous offering of the Contracts and the Fund’s securities. The Parties agree that the Fund’ s Offering Documents will not be provided any earlier than the date on which Offering Documents are filed with the Securities and Exchange Commission (“SEC”) on ▇▇▇▇▇.

(ii)

The Fund agrees to provide or make available the Shareholder Reports and Portfolio Holdings to the Company (or its designee), to the extent specified in Rule 30e-3 and within a time frame reasonably designed to assist the Company in complying with the Company’ s Website posting obligations under Rule 30e-3 provided that, to the extent requested by the Fund, the Company executes a non-disclosure agreement in the form that the Fund provides to the Company prior to the provision of any portfolio holdings information that has not been made publicly available. The Company covenants that it will not make public any portfolio holdings information prior to the date on which the Fund files such information with the SEC on ▇▇▇▇▇, and will keep portfolio holdings information confidential until such time. If the Fund does not provide the Company with its Complete Portfolio Holdings pursuant to Rule 30e-3(b)(1)(iii) because they are currently included in the Shareholder Report, and later seeks to discontinue including the Complete Portfolio Holdings in the Shareholder Report, the Fund will make a reasonable effort to give the Company thirty (30) day’s advance written notice prior to implementing the change.

(i)

are both human-readable and capable of being printed on paper in human-­ readable format (in accordance with paragraph (b)(3) of Rule 30e-3 and paragraph (h)(2)(i) of Rule 498A);

(ii)

will enable the Company to permit persons accessing the Statutory Prospectus and SAI for the Portfolios to move directly back and forth between each section heading in a table of contents of such document and the section of the document referenced in that section heading (that is, these documents must include linking, in accordance with paragraph (h)(2)(ii) of Rule 498A); and

(iii)

will enable the Company to permit persons accessing the Fund Documents to permanently retain, free of charge, an electronic version of such Fund Documents that meet the requirements of subparagraphs (h)(2)(i) and (ii) of Rule 498A (in accordance with paragraph (h)(3) of Rule 498A).

(i)

The Company shall ensure that an Initial Summary Prospectus is used for each currently offered Contract described under the related registration statement, in accordance with paragraph (j)(I)(i) of Rule 498A.

(ii)

The Fund currently uses a Summary Prospectus for the Portfolios and the Fund will make a reasonable effort to provide thirty (30) days advance notice to the Company if it is decided to discontinue the use of Summary Prospectuses for any relevant Portfolio.

2.

Content of Fund Documents. The Fund shall be responsible for the content and substance of the Fund Documents as provided to the Company, including, but not limited to, the accuracy and completeness of the Fund Documents. Without limiting the generality of the foregoing in any manner, the Fund shall be responsible for ensuring that the Fund Documents as provided to the Company:

3.

Provision of Fund Documents for Paper Delivery.

(a)

If requested by the Company, the Fund shall provide the Company with a quantity of paper copies of the then current Fund Documents as it deems reasonably sufficient. The Company, at its expense, may request additional copies of Fund Documents from time to time in order that the Company may maintain a supply of such current paper documents sufficient in its reasonable judgment to meet anticipated requests from Contract holders in order to comply with the requirements of paragraphs (e) and (f) of Rule 30e-3 and paragraphs (i)(l) and (j)(3) of Rule 498A. Such Company requests shall be fulfilled reasonably promptly, after the request from the Company or its agent is received by either the Fund or DFAS.

(b)

Alternatively, if requested by the Company in lieu thereof, the Fund or its designee shall provide such electronic or other documentation (including “camera ready” copies of the current Fund Documents as set in type, or at the request of the Company, a diskette in a form suitable to be sent to a financial printer), and such other assistance as is reasonably necessary to have the then current Fund Documents printed for distribution; the reasonable costs of providing the electronic documentation and of such printing to be borne by the Company.

(c)

The costs of mailing the Fund Documents to Contract holders shall be borne by the Company.

4.

Expense and Performance Data for the Portfolios. The Fund will provide such data regarding each Po1tfolio’s expense ratios and investment performance made publicly available by the Fund that the Fund is required to prepare for inclusion in the Portfolio’s prospectuses. In this regard, the Fund shall provide data on the expense ratios and investment performance for each of the Portfolios as listed in (a) - (c) below (the “Portfolio Data”) as the Company may reasonably request. Without limiting the generality of the forgoing, the Fund shall provide the Portfolio Data on a timely basis and as soon as reasonably practicable to facilitate the Company’s preparation of its annually updated registration statement(s) for the Contracts (and as otherwise reasonably requested by the Company);

(a)

the gross “Annual Portfolio Company Expenses” for each Portfolio calculated in accordance with Item 3 of Form N-1A, before any expense reimbursements or fee waiver arrangements for the time periods required in Form N-1A

(b)

the net “Annual Portfolio Company Expenses” (aka “Total Annual Portfolio Operating Expenses”) for each Portfolio calculated in accordance with Item 3 of Form N-lA, that include any expense reimbursements or fee waiver arrangements and the period for which the expense reimbursements or fee waiver arrangement is expected to continue and whether it can be terminated by the Portfolio (or Fund); and

(c)

the “Average Annual Total Returns” for each Portfolio (before taxes) as calculated pursuant to Item 4(b)(2)(iii) of Form N-IA and made publicly available by the Fund.

5.

Construction of this Amendment and the Agreement.

(a)

This Amendment shall be interpreted in a manner that is consistent with Rule 30e-3 under the 1940 Act and Rule 498A (including paragraph G) thereof) under the 1933 Act and any interpretations of those Rules by the SEC, its staff, courts, or other appropriate legal authorities.

(b)

To the extent the terms of this Amendment conflict with the terms of the Agreement, the terms of this Amendment shall control; otherwise, and except as otherwise specifically set forth in this Amendment, the terms of the Agreement shall continue to apply, and shall apply to the duties, responsibilities, rights and obligations of the Parties under and pursuant to this Amendment.

6.

Termination. This Amendment shall terminate upon the earlier of:

(a).

termination of the Agreement; or

(b).

thirty (30) days written notice from any Party to the other Parties.

7.

Counterparts and Delivery. This Amendment may be executed in two or more counterparts, each of which shall be an original and all of which together shall constitute one instrument. A signed copy of this Amendment delivered by facsimile or by emailing a copy in .pdf form shall be treated as an original and shall bind all Parties just as would the exchange of originally signed copies.

Company:

MassMutual Life Insurance Company

By:

  /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇

Name:

  ▇▇▇▇▇▇▇ ▇. ▇▇▇▇

Title:

  Head of institutional Insurance

Fund:

DFA Investment Dimensions Group Inc.

By:

  /s/ ▇▇▇▇ ▇▇▇▇

Name:

  ▇▇▇▇ ▇▇▇▇

Title:

  Vice President

DFAS

DFA Securities LLC

By:

  /s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇

Name:

  ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇

Title:

  Vice President

Adviser:

Dimensional Fund Advisors LP

By:

  /s/ ▇▇▇▇▇▇▇ D

Name:

  ▇▇▇▇▇▇▇ D

Title:

  Vice President