From 76a5fac3f64d9983faba6565dc42655a25d2e5ff Mon Sep 17 00:00:00 2001
From: Mark Vainomaa <mv@buckshot.ee>
Date: Fri, 12 Jun 2026 02:24:51 +0200
Subject: [PATCH] fix(hypercore): correct field type for AssetData#premium

---
 src/hypercore/types/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/hypercore/types/mod.rs b/src/hypercore/types/mod.rs
index fdf0712..bdf5126 100644
--- a/src/hypercore/types/mod.rs
+++ b/src/hypercore/types/mod.rs
@@ -2899,8 +2899,8 @@ pub struct AssetContext {
     #[serde(with = "rust_decimal::serde::str_option", default)]
     pub mid_px: Option<Decimal>,
     /// Premium component of funding
-    #[serde(with = "rust_decimal::serde::str")]
-    pub premium: Decimal,
+    #[serde(with = "rust_decimal::serde::str_option", default)]
+    pub premium: Option<Decimal>,
     /// Previous day closing price
     #[serde(with = "rust_decimal::serde::str")]
     pub prev_day_px: Decimal,