diff --git a/ingest-option-quotes.ts b/ingest-option-quotes.ts
index 1067e19..0521e1c 100644
--- a/ingest-option-quotes.ts
+++ b/ingest-option-quotes.ts
@@ -69,7 +69,7 @@ for (const date of dateRange("2024-05-02", "2024-05-03")) {
                     symbol: contract.underlying_ticker,
                     expiration_date: contract.expiration_date,
                     strike: contract.strike_price,
-                    ts: sip_timestamp,
+                    ts: Math.floor(sip_timestamp / 1000000),
                     bid: bid_price,
                     ask: ask_price,
                   })