diff --git a/fledge-tester-list.md b/fledge-tester-list.md
index 6b48a198d..03b894c97 100644
--- a/fledge-tester-list.md
+++ b/fledge-tester-list.md
@@ -57,6 +57,7 @@ The usefulness of this page depends on testers sharing information and updates.
 | Adlook (subsidiary of RTB House) | DSP | Continuous testing ongoing; long term commitment. | | privacysandbox@adlook.com |
 | Microsoft (Xandr, MSAN) | SSP + DSP(s) | Testing | | privacy_sandbox@microsoft.com |
 | Tremor International | SSP & DSP| 2023-2024 | coming soon | subhag.oak@amobee.com |
+| Triplelift | SSP | Testing in progress | | prod-privacysandbox@triplelift.com |
 
 ## Table - Publishers and Advertisers Interested in Testing or Early Adoption
 Companies who may be interested in participating in tests and early adoption opportunities provided by ad tech companies.