diff --git a/library/ic-ledger-types/src/lib.rs b/library/ic-ledger-types/src/lib.rs
index 722c10c85..f1a171e6d 100644
--- a/library/ic-ledger-types/src/lib.rs
+++ b/library/ic-ledger-types/src/lib.rs
@@ -502,6 +502,8 @@ pub struct Transaction {
     pub operation: Option<Operation>,
     /// The time at which the client of the ledger constructed the transaction.
     pub created_at_time: Timestamp,
+    /// The memo that was provided to the icrc1_transfer endpoint.
+    pub icrc1_memo: Option<ByteBuf>,
 }
 
 /// A single record in the ledger.