LETTER AGREEMENT

Form of Exhibit (g)(6)

LETTER AGREEMENT

November 7, 0000

Xxxxx Xxxxxx Bank and Trust Company
Global Investor Services Group
0 Xxxxxx xx Xxxxxxxxx XXX0X
Xxxxxx, Xxxxxxxxxxxxx 00000

To Whom It May Concern:

Please be advised that Janus Aspen Series (the “Trust”) has established Janus Aspen Protected Series — Growth as a new series of the Trust, effective on or about January 3, 2012. Pursuant to the existing Amended and Restated Custodian Contract between the Trust and State Street Bank and Trust Company (“State Street”), the Trust requests confirmation that State Street will act as custodian for the new series under the terms of the contract.

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

JANUS ASPEN SERIES

By:

Xxxxxxxxx Xxxxxxxxxx-Xxxxxx,

Vice President and Secretary

STATE STREET BANK AND TRUST COMPANY

By:

Agreed to this                     day of                      2011