diff --git a/README.md b/README.md
index c5c88daf9..ce0ae8738 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ This repo hosts the current eth2.0 specifications. Discussions about design rati
 
 Core specifications for eth2.0 client validation can be found in [specs/core](specs/core). These are divided into phases. Each subsequent phase depends upon the prior. The current phases specified are:
 * [Phase 0 -- The Beacon Chain](specs/core/0_beacon-chain.md)
+* [Phase 1 -- Custody game](specs/core/1_custody-game.md)
 * [Phase 1 -- Shard Data Chains](specs/core/1_shard-data-chains.md)
 
 Accompanying documents can be found in [specs](specs) and include