VARIABLE SURVIVORSHIP

A FLEXIBLE PREMIUM VARIABLE UNIVERSAL LIFE INSURANCE POLICY

issued by

Security Life of Denver Insurance Company

and its

Security Life Separate Account L1

Supplement dated July 6, 2005

This supplement amends certain information contained in the prospectus dated April 29, 2005. Please read it carefully and keep it with your prospectus for future reference.

______________________________________________________________________

The "Policy Availability and Qualified Plans" section on page 58 is hereby deleted and replaced with the following:

The policy is not available for sale to and cannot be acquired with funds that are assets of (i) an employee benefit plan as defined in Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended ("ERISA"), and that is subject to Title I of ERISA; (ii) a plan described in Section 4975(e)(1) of the Internal Revenue Code; or (iii) an entity whose underlying assets include plan assets by reason of the investment by an employee benefit plan or other plan in such entity within the meaning of 29 C.F.R. Section 2510.3-101 or otherwise.

Policy owners may use the policy in various other arrangements, including:

• Non-qualified deferred compensation or salary continuance plans;

Split dollar insurance plans;

Executive bonus plans;

Retiree medical benefit plans; and

Other plans.

The tax consequences of these plans may vary depending on the particular facts and circumstances of each arrangement. If you want to use your policy with any of these various arrangements, you should consult a qualified tax adviser regarding the tax issues of your particular arrangement.

136218 Page 1 of 1 May 2005