VUL-DB

FLEXIBLE PREMIUM ADJUSTABLE VARIABLE UNIVERSAL LIFE
INSURANCE POLICIES

issued by

Security Life of Denver Insurance Company

and its

Security Life Separate Account L1

Supplement Dated December 20, 2023

This supplement updates and amends your current prospectus and subsequent supplements thereto. Please read it carefully and keep it with your prospectus for future reference. Capitalized terms not defined in this supplement shall have the meaning given to them in your prospectus.

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IMPORTANT INFORMATION REGARDING THE INVESTMENT PORTFOLIOS

One or more funds available through your contract changed names on November 28, 2023. The following is a list of all name changes applicable to investments under your contract.

List of Fund Name Changes

New Fund Name	Former Fund Name
Voya Global Insights Portfolio - Class I	VY® Invesco Global Portfolio - Class I

Allocation Instructions. You may give us alternative allocation instructions at any time by contacting us at Customer Service, P.O. Box 9271, Des Moines, IA 50306-9271 or calling us at 1-800-366-0066.

MORE INFORMATION IS AVAILABLE

More information about the funds available through your Contract, including information about the risks associated with investing in them can be found in the current prospectus and Statement of Additional Information for each fund. You may obtain these documents by contacting us at our:

Customer Service

P.O. Box 9271

Des Moines, IA 50306-9271

1-800-366-0066

If you received a summary prospectus for any of the funds available through your Contract, you may obtain a full prospectus and other fund information free of charge by either accessing the internet address, calling the telephone number or sending an email request to the email address shown on the front of the fund’s summary prospectus.