From 10eb184c6276e708941416a66ad1d9ea775b3fb7 Mon Sep 17 00:00:00 2001
From: jem <jembishop@gmail.com>
Date: Sun, 8 Feb 2026 20:48:47 +0000
Subject: [PATCH] fix: allow missing sequence-number in v2 snapshots for
 v1-upgraded tables

---
 crates/iceberg/src/spec/snapshot.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crates/iceberg/src/spec/snapshot.rs b/crates/iceberg/src/spec/snapshot.rs
index 270279988b..1cb7b41c60 100644
--- a/crates/iceberg/src/spec/snapshot.rs
+++ b/crates/iceberg/src/spec/snapshot.rs
@@ -296,6 +296,7 @@ pub(super) mod _serde {
         pub snapshot_id: i64,
         #[serde(skip_serializing_if = "Option::is_none")]
         pub parent_snapshot_id: Option<i64>,
+        #[serde(default)]
         pub sequence_number: i64,
         pub timestamp_ms: i64,
         pub manifest_list: String,