diff --git a/WORKSPACE.bazel b/WORKSPACE.bazel
index 5a660f97a5df..06427da7b2e8 100644
--- a/WORKSPACE.bazel
+++ b/WORKSPACE.bazel
@@ -50,6 +50,7 @@ canisters(
         "sns_index": "ic-icrc1-index-ng.wasm.gz",
         "node-rewards": "node-rewards-canister.wasm.gz",
         "cycles_ledger": "cycles-ledger.wasm.gz",
+        "cycles_ledger_index": "ic-icrc1-index-ng-u256.wasm.gz",
     },
     path = "//:mainnet-canister-revisions.json",
     reponames = {
@@ -86,6 +87,7 @@ canisters(
         "sns_index": "mainnet_ic-icrc1-index-ng",
         "node-rewards": "mainnet_node-rewards-canister",
         "cycles_ledger": "mainnet_cycles_ledger_canister",
+        "cycles_ledger_index": "mainnet_cycles_ledger_index",
     },
     repositories = {
         "cycles_ledger": "dfinity/cycles-ledger",
diff --git a/mainnet-canister-revisions.json b/mainnet-canister-revisions.json
index 2758ac50b99f..6d1a9dcddead 100644
--- a/mainnet-canister-revisions.json
+++ b/mainnet-canister-revisions.json
@@ -67,6 +67,10 @@
     "sha256": "a2a0c65a94559aed373801a149bf4a31b176cb8cbabf77465eb25143ae880f37",
     "tag": "cycles-ledger-v1.0.5"
   },
+  "cycles_ledger_index": {
+    "rev": "2190613d3b5bcd9b74c382b22d151580b8ac271a",
+    "sha256": "d615ea66e7ec7e39a3912889ffabfabb9b6f200584b9656789c3578fae1afac7"
+  },
   "genesis-token": {
     "rev": "02571e8215fa3e77da791e693cc238b2de3beae9",
     "sha256": "f897870b7b6d6c15f657496bc731b0e341c34468ddbb8fa0722ec7beb6b51cee"
diff --git a/rs/nervous_system/tools/sync-with-released-nervous-system-wasms/src/main.rs b/rs/nervous_system/tools/sync-with-released-nervous-system-wasms/src/main.rs
index f0d24c73469f..820bdc83b537 100644
--- a/rs/nervous_system/tools/sync-with-released-nervous-system-wasms/src/main.rs
+++ b/rs/nervous_system/tools/sync-with-released-nervous-system-wasms/src/main.rs
@@ -4,9 +4,9 @@ use ic_agent::Agent;
 use ic_base_types::CanisterId;
 use ic_nervous_system_agent::nns::sns_wasm;
 use ic_nns_constants::{
-    CYCLES_LEDGER_CANISTER_ID, CYCLES_MINTING_CANISTER_ID, GENESIS_TOKEN_CANISTER_ID,
-    GOVERNANCE_CANISTER_ID, LEDGER_CANISTER_ID, LIFELINE_CANISTER_ID, NODE_REWARDS_CANISTER_ID,
-    REGISTRY_CANISTER_ID, ROOT_CANISTER_ID, SNS_WASM_CANISTER_ID,
+    CYCLES_LEDGER_CANISTER_ID, CYCLES_LEDGER_INDEX_CANISTER_ID, CYCLES_MINTING_CANISTER_ID,
+    GENESIS_TOKEN_CANISTER_ID, GOVERNANCE_CANISTER_ID, LEDGER_CANISTER_ID, LIFELINE_CANISTER_ID,
+    NODE_REWARDS_CANISTER_ID, REGISTRY_CANISTER_ID, ROOT_CANISTER_ID, SNS_WASM_CANISTER_ID,
 };
 use reqwest::Client;
 use serde::Deserialize;
@@ -15,7 +15,7 @@ use std::fs::File;
 use std::io::BufReader;
 use std::path::{Path, PathBuf};
 
-pub const NNS_CANISTER_NAME_TO_ID: [(&str, CanisterId); 9] = [
+pub const NNS_CANISTER_NAME_TO_ID: [(&str, CanisterId); 10] = [
     ("registry", REGISTRY_CANISTER_ID),
     ("governance", GOVERNANCE_CANISTER_ID),
     ("ledger", LEDGER_CANISTER_ID),
@@ -25,6 +25,7 @@ pub const NNS_CANISTER_NAME_TO_ID: [(&str, CanisterId); 9] = [
     ("cycles-minting", CYCLES_MINTING_CANISTER_ID),
     ("sns-wasm", SNS_WASM_CANISTER_ID),
     ("node-rewards", NODE_REWARDS_CANISTER_ID),
+    ("cycles_ledger_index", CYCLES_LEDGER_INDEX_CANISTER_ID),
 ];
 
 struct ExternalCanisterInfo<'a> {