diff --git a/pentesting-web/race-condition.md b/pentesting-web/race-condition.md
index 4960675f3..234aa35c4 100644
--- a/pentesting-web/race-condition.md
+++ b/pentesting-web/race-condition.md
@@ -414,6 +414,7 @@ In [**WS\_RaceCondition\_PoC**](https://github.com/redrays-io/WS\_RaceCondition\
 * [https://hackerone.com/reports/55140](https://hackerone.com/reports/55140)
 * [https://portswigger.net/research/smashing-the-state-machine](https://portswigger.net/research/smashing-the-state-machine)
 * [https://portswigger.net/web-security/race-conditions](https://portswigger.net/web-security/race-conditions)
+* [https://flatt.tech/research/posts/beyond-the-limit-expanding-single-packet-race-condition-with-first-sequence-sync/](https://flatt.tech/research/posts/beyond-the-limit-expanding-single-packet-race-condition-with-first-sequence-sync/)
 
 {% hint style="success" %}
 Learn & practice AWS Hacking:<img src="../.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="../.gitbook/assets/arte.png" alt="" data-size="line">\