diff --git a/beacon_node/beacon_chain/src/beacon_chain.rs b/beacon_node/beacon_chain/src/beacon_chain.rs
index 81f09e0547..c19da15385 100644
--- a/beacon_node/beacon_chain/src/beacon_chain.rs
+++ b/beacon_node/beacon_chain/src/beacon_chain.rs
@@ -471,7 +471,7 @@ pub struct BeaconChain<T: BeaconChainTypes> {
     /// A cache used when producing attestations whilst the head block is still being imported.
     pub early_attester_cache: EarlyAttesterCache<T::EthSpec>,
     /// A cache used to store verified/equivocating inclusion lists.
-    pub inclusion_list_cache: InclusionListCache<T::EthSpec>,
+    pub inclusion_list_cache: RwLock<InclusionListCache<T::EthSpec>>,
     /// Cache gossip verified blocks to serve over ReqResp before they are imported
     pub reqresp_pre_import_cache: Arc<RwLock<ReqRespPreImportCache<T::EthSpec>>>,
     /// A cache used to keep track of various block timings.
@@ -7293,6 +7293,10 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
         Ok(())
     }
 
+    pub fn on_verified_inclusion_list(&self, signed_il: SignedInclusionList<T::EthSpec>) {
+        self.inclusion_list_cache.write().on_inclusion_list(signed_il);
+    }
+
     pub fn metrics(&self) -> BeaconChainMetrics {
         BeaconChainMetrics {
             reqresp_pre_import_cache_len: self.reqresp_pre_import_cache.read().len(),
diff --git a/beacon_node/beacon_chain/src/execution_payload.rs b/beacon_node/beacon_chain/src/execution_payload.rs
index 28c55f97e8..e69d706be8 100644
--- a/beacon_node/beacon_chain/src/execution_payload.rs
+++ b/beacon_node/beacon_chain/src/execution_payload.rs
@@ -105,6 +105,7 @@ impl<T: BeaconChainTypes> PayloadNotifier<T> {
 
         let inclusion_list_transactions = chain
             .inclusion_list_cache
+            .read()
             .get_inclusion_list_transactions(block.slot())
             .unwrap_or(vec![].into());
 
diff --git a/beacon_node/beacon_chain/src/inclusion_list_verification.rs b/beacon_node/beacon_chain/src/inclusion_list_verification.rs
index dfa23ef709..584996a847 100644
--- a/beacon_node/beacon_chain/src/inclusion_list_verification.rs
+++ b/beacon_node/beacon_chain/src/inclusion_list_verification.rs
@@ -29,9 +29,7 @@ impl From<BeaconChainError> for GossipInclusionListError {
 }
 
 pub struct GossipVerifiedInclusionList<T: BeaconChainTypes> {
-    // TODO(focil) remove once this field is read
-    #[allow(dead_code)]
-    signed_il: SignedInclusionList<T::EthSpec>,
+    pub signed_il: SignedInclusionList<T::EthSpec>,
 }
 
 impl<T: BeaconChainTypes> GossipVerifiedInclusionList<T> {
diff --git a/beacon_node/network/src/network_beacon_processor/gossip_methods.rs b/beacon_node/network/src/network_beacon_processor/gossip_methods.rs
index 73359248b0..6c1ced94d1 100644
--- a/beacon_node/network/src/network_beacon_processor/gossip_methods.rs
+++ b/beacon_node/network/src/network_beacon_processor/gossip_methods.rs
@@ -2174,8 +2174,11 @@ impl<T: BeaconChainTypes> NetworkBeaconProcessor<T> {
         _seen_timestamp: Duration,
     ) {
         match GossipVerifiedInclusionList::verify(&il, &self.chain) {
-            Ok(_gossip_verified_il) => {
+            Ok(gossip_verified_il) => {
                 debug!(self.log, "Successfully verified gossip inclusion list");
+                // Store validated inclusion list in the IL cache. This also catches
+                // equivocating IL's and handles them accordingly.
+                self.chain.on_verified_inclusion_list(gossip_verified_il.signed_il);
             }
             Err(err) => match err {
                 GossipInclusionListError::FutureSlot { .. }