diff --git a/advanced_expert/practice_your_skills/README.md b/advanced_expert/practice_your_skills/README.md
index ceabde1..52e91dc 100644
--- a/advanced_expert/practice_your_skills/README.md
+++ b/advanced_expert/practice_your_skills/README.md
@@ -16,3 +16,4 @@
 * [Vyper Punk](https://github.com/SupremacyTeam/VyperPunk)
 * [more blockchain ctfs](https://github.com/minaminao/ctf-blockchain/)
 * [list of blockchain CTF competitions](https://github.com/blockthreat/blocksec-ctfs)
+* [ghosts of epochs past](https://www.ghostsofepochspast.xyz/)