diff --git a/ethereum/consensus-core/src/types/mod.rs b/ethereum/consensus-core/src/types/mod.rs
index 3d709300..7d757ede 100644
--- a/ethereum/consensus-core/src/types/mod.rs
+++ b/ethereum/consensus-core/src/types/mod.rs
@@ -398,7 +398,7 @@ pub struct DepositRequest {
     amount: u64,
     signature: Signature,
     #[serde(with = "serde_utils::u64")]
-    slot: u64,
+    index: u64,
 }
 
 #[derive(Deserialize, Debug, Default, Encode, TreeHash, Clone)]