diff --git a/root/schema.graphql b/root/schema.graphql
index 439a5b5..52cc9f4 100644
--- a/root/schema.graphql
+++ b/root/schema.graphql
@@ -7,6 +7,7 @@ type Checkpoint @entity {
   start: BigInt!
   end: BigInt!
   root: Bytes!
+  logIndex: String!
   transactionHash: Bytes!
   timestamp: BigInt!
 }
diff --git a/root/src/mappings/checkpoint.ts b/root/src/mappings/checkpoint.ts
index 1abb8d6..cd938d7 100644
--- a/root/src/mappings/checkpoint.ts
+++ b/root/src/mappings/checkpoint.ts
@@ -18,6 +18,7 @@ export function handleNewHeaderBlock(event: NewHeaderBlock): void {
   entity.start = event.params.start
   entity.end = event.params.end
   entity.root = event.params.root
+  entity.logIndex = event.logIndex.toString()
 
   entity.transactionHash = event.transaction.hash
   entity.timestamp = event.block.timestamp