diff --git a/specs/core/1_beacon-chain.md b/specs/core/1_beacon-chain.md
index 94dfd624f..169c71123 100644
--- a/specs/core/1_beacon-chain.md
+++ b/specs/core/1_beacon-chain.md
@@ -644,7 +644,6 @@ def process_epoch(state: BeaconState) -> None:
     process_rewards_and_penalties(state)
     process_registry_updates(state)
     process_reveal_deadlines(state)
-    process_challenge_deadlines(state)
     process_slashings(state)
     process_final_updates(state)
     process_custody_final_updates(state)
@@ -652,6 +651,10 @@ def process_epoch(state: BeaconState) -> None:
     process_light_client_committee_updates(state)
 ```
 
+#### Custody game updates
+
+`process_reveal_deadlines` and `process_custody_final_updates` are defined in [the Custody Game spec](./1_custody-game.md), 
+
 #### Online-tracking
 
 ```python