diff --git a/beacon_node/beacon_chain/src/persisted_beacon_chain.rs b/beacon_node/beacon_chain/src/persisted_beacon_chain.rs
index 0a85c2cdfb..b055dd2295 100644
--- a/beacon_node/beacon_chain/src/persisted_beacon_chain.rs
+++ b/beacon_node/beacon_chain/src/persisted_beacon_chain.rs
@@ -17,6 +17,15 @@ pub struct PersistedBeaconChain {
     /// https://github.com/sigp/lighthouse/issues/1784
     pub _canonical_head_block_root: Hash256,
     pub genesis_block_root: Hash256,
+    /// DEPRECATED
+    pub ssz_head_tracker: SszHeadTracker,
+}
+
+/// DEPRECATED
+#[derive(Encode, Decode, Clone)]
+pub struct SszHeadTracker {
+    roots: Vec<Hash256>,
+    slots: Vec<Slot>,
 }
 
 impl StoreItem for PersistedBeaconChain {