diff --git a/dosp-survey.ltx b/dosp-survey.ltx
index a33b5c62b73d57df5cbaf30698a20667b58f8c3f..04721186e9498c547d44160f1bd81e0b5bc1824d 100644
--- a/dosp-survey.ltx
+++ b/dosp-survey.ltx
@@ -373,6 +373,17 @@ converts to AGPL if the original developer ceases to operate a service
 based on the code.\footnote{See
 \otsurl{https://github.com/mm201/pkmn-classic-framework}.}
 
+Roughly contemporaneously with MariaDB's development of BUSL, Ben
+Boyter proposed a ``GPL time bomb" (later renamed to simply
+``eventually open") that is conceptually similar to BUSL with an
+AUG specifying a limited number of users within an
+organization.\footnote{See
+\otsurl{https://boyter.org/2016/08/gpl-time-bomb-interesting-approach-foss-licensing/}.}
+This approach was used for Boyter's ``searchcode" project\footnote{See
+\otsurl{https://www.searchcode.com/}.}, but no new development has
+taken place on this codebase since 2020, so it should now be licensed
+under GPL v3.
+
 Sentry has released a draft of its ``Functional Source License" (FSL),
 which it hopes to use for its own currently BUSL-licensed software, at
 \otsurl{https://fsl.software/}.\footnote{Disclosure: