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EXHIBIT 22.1

Subsidiary Guarantors and Issuers of Guaranteed Securities and Affiliates whose Securities Collateralize Securities of the Registrant

The table below sets forth the subsidiaries of Holly Energy Partners, L.P. (the “Partnership”) listed as guarantors or as co-issuer under the Partnership’s Registration Statement on Form S-3 (No. 333-265154).

Entity			Jurisdiction of Incorporation or Organization			Role
Holly Energy Finance Corp.			Delaware			Co-Issuer
Cheyenne Logistics LLC			Delaware			Guarantor
El Dorado Logistics LLC			Delaware			Guarantor
El Dorado Operating LLC			Delaware			Guarantor
El Dorado Osage LLC			Delaware			Guarantor
Frontier Aspen LLC			Delaware			Guarantor
HEP Cheyenne LLC			Delaware			Guarantor
HEP Cushing LLC			Delaware			Guarantor
HEP El Dorado LLC			Delaware			Guarantor
HEP Fin-Tex/Trust-River, L.P.			Texas			Guarantor
HEP Logistics GP, L.L.C.			Delaware			Guarantor
HEP Mountain Home, L.L.C.			Delaware			Guarantor
HEP Navajo Southern, L.P.			Delaware			Guarantor
HEP Oklahoma LLC			Delaware			Guarantor
HEP Pipeline Assets, Limited Partnership			Delaware			Guarantor
HEP Pipeline GP, L.L.C.			Delaware			Guarantor
HEP Pipeline, L.L.C.			Delaware			Guarantor
HEP Refining Assets, L.P.			Delaware			Guarantor
HEP Refining GP, L.L.C.			Delaware			Guarantor
HEP Refining, L.L.C.			Delaware			Guarantor
HEP Tulsa LLC			Delaware			Guarantor
HEP UNEV Holdings LLC			Delaware			Guarantor
HEP UNEV Pipeline LLC			Delaware			Guarantor
HEP Woods Cross, L.L.C.			Delaware			Guarantor
Holly Energy Holdings LLC			Delaware			Guarantor
Holly Energy Partners—Operating, L.P.			Delaware			Guarantor
Holly Energy Storage—Lovington LLC			Delaware			Guarantor
Lovington-Artesia, L.L.C.			Delaware			Guarantor
Roadrunner Pipeline, L.L.C.			Delaware			Guarantor
SLC Pipeline LLC			Delaware			Guarantor
Woods Cross Operating LLC			Delaware			Guarantor
Sinclair Transportation Company LLC			Delaware			Guarantor
Sinclair Logistics LLC			Delaware			Guarantor
Sinclair Pipeline Company LLC			Delaware			Guarantor
UNEV Pipeline, LLC			Delaware			Guarantor

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* The above-listed entities also serve as co-issuer and as guarantors, respectively, of the Partnership’s (i) 5.000% Senior Notes due 2028 (the “2028 Notes”) and (ii) 6.375% Senior Notes due 2027 (the “2027 Notes” and together with the 2028 Notes, the “Notes”). The Notes were issued in private offerings to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933 (the “Securities Act”) and to persons outside the United States pursuant to Regulation S under the Securities Act.