diff --git a/crates/scroll/alloy/consensus/src/transaction/l1_message.rs b/crates/scroll/alloy/consensus/src/transaction/l1_message.rs
index 0c200904fbc..ec743db4f51 100644
--- a/crates/scroll/alloy/consensus/src/transaction/l1_message.rs
+++ b/crates/scroll/alloy/consensus/src/transaction/l1_message.rs
@@ -29,17 +29,18 @@ pub const L1_MESSAGE_TRANSACTION_TYPE: u8 = 126;
 /// contain optionally serializable fields, no `bincode` compatible bridge implementation is
 /// required.
 #[derive(Clone, Debug, Default, PartialEq, Eq, Hash)]
-#[cfg_attr(any(test, feature = "serde"), derive(serde::Serialize, serde::Deserialize))]
-#[cfg_attr(any(test, feature = "serde"), serde(rename_all = "camelCase"))]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
+#[cfg_attr(
+    any(test, feature = "serde"),
+    serde(from = "msg_serde::L1MsgSerdeHelper", into = "msg_serde::L1MsgSerdeHelper")
+)]
 #[cfg_attr(any(test, feature = "arbitrary"), derive(arbitrary::Arbitrary))]
 #[cfg_attr(any(test, feature = "reth-codec"), derive(Compact))]
 #[cfg_attr(any(test, feature = "reth-codec"), add_arbitrary_tests(compact, rlp))]
 pub struct TxL1Message {
     /// The queue index of the message in the L1 contract queue.
-    #[cfg_attr(feature = "serde", serde(with = "alloy_serde::quantity"))]
     pub queue_index: u64,
     /// The gas limit for the transaction. Gas is paid for when message is sent from the L1.
-    #[cfg_attr(feature = "serde", serde(with = "alloy_serde::quantity", rename = "gas"))]
     pub gas_limit: u64,
     /// The destination for the transaction. `Address` is used in place of `TxKind` since contract
     /// creations aren't allowed via L1 message transactions.
@@ -300,6 +301,55 @@ impl Sealable for TxL1Message {
     }
 }
 
+#[cfg(any(test, feature = "serde"))]
+mod msg_serde {
+    use super::*;
+    use serde::{Deserialize, Serialize};
+
+    /// Helper struct to serialize/deserialize the `TxL1Message` with a `nonce` field.
+    #[derive(Clone, Debug, Default, PartialEq, Eq, Serialize, Deserialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct L1MsgSerdeHelper {
+        #[serde(with = "alloy_serde::quantity")]
+        queue_index: u64,
+        #[serde(with = "alloy_serde::quantity", rename = "gas")]
+        gas_limit: u64,
+        to: Address,
+        value: U256,
+        sender: Address,
+        input: Bytes,
+        #[serde(default, with = "alloy_serde::quantity")]
+        nonce: u64,
+    }
+
+    impl From<L1MsgSerdeHelper> for TxL1Message {
+        fn from(helper: L1MsgSerdeHelper) -> Self {
+            Self {
+                queue_index: helper.queue_index,
+                gas_limit: helper.gas_limit,
+                to: helper.to,
+                value: helper.value,
+                sender: helper.sender,
+                input: helper.input,
+            }
+        }
+    }
+
+    impl From<TxL1Message> for L1MsgSerdeHelper {
+        fn from(helper: TxL1Message) -> Self {
+            Self {
+                queue_index: helper.queue_index,
+                gas_limit: helper.gas_limit,
+                to: helper.to,
+                value: helper.value,
+                sender: helper.sender,
+                input: helper.input,
+                nonce: 0,
+            }
+        }
+    }
+}
+
 /// Scroll specific transaction fields
 #[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
 #[cfg_attr(any(test, feature = "serde"), derive(serde::Serialize, serde::Deserialize))]
@@ -347,6 +397,24 @@ mod tests {
     use rand::Rng;
     use reth_codecs::{test_utils::UnusedBits, validate_bitflag_backwards_compat};
 
+    #[test]
+    fn test_serde_roundtrip() {
+        let original = TxL1Message {
+            queue_index: 100,
+            gas_limit: 1234,
+            to: Address::random(),
+            value: U256::random(),
+            sender: Address::random(),
+            input: bytes!("deadbeef"),
+        };
+        let json = serde_json::to_value(&original).expect("Failed to serialize");
+        assert_eq!(json.get("nonce"), Some(&serde_json::Value::String("0x0".to_string())));
+
+        let deserialized: TxL1Message =
+            serde_json::from_value(json).expect("Failed to deserialize");
+        assert_eq!(original, deserialized);
+    }
+
     #[test]
     fn test_rlp_roundtrip() {
         // <https://scrollscan.com/tx/0xace7103cc22a372c81cda04e15442a721cd3d5d64eda2e1578ba310d91597d97>
diff --git a/crates/scroll/alloy/rpc-types/src/transaction.rs b/crates/scroll/alloy/rpc-types/src/transaction.rs
index d4c482d3cd4..1aef1bf0591 100644
--- a/crates/scroll/alloy/rpc-types/src/transaction.rs
+++ b/crates/scroll/alloy/rpc-types/src/transaction.rs
@@ -296,10 +296,10 @@ mod tests {
     use alloy_primitives::address;
 
     #[test]
-    fn can_deserialize_deposit() {
+    fn can_deserialize_l1_messages() {
         // cast rpc eth_getTransactionByHash
         // 0x5c1c3785c8bf5d7f1cb714abd1d22e32642887215602c3a14a5e9ee105bad6aa --rpc-url https://rpc.scroll.io
-        let rpc_tx = r#"{"blockHash":"0x018ed80ea8340984a1f4841490284d6e51d71f9e9411feeca41e007a89fbfdff","blockNumber":"0xb81121","from":"0x7885bcbd5cecef1336b5300fb5186a12ddd8c478","gas":"0x1e8480","gasPrice":"0x0","hash":"0x5c1c3785c8bf5d7f1cb714abd1d22e32642887215602c3a14a5e9ee105bad6aa","input":"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","to":"0x781e90f1c8fc4611c9b7497c3b47f99ef6969cbc","transactionIndex":"0x0","value":"0x0","type":"0x7e","v":"0x0","r":"0x0","s":"0x0","sender":"0x7885bcbd5cecef1336b5300fb5186a12ddd8c478","queueIndex":"0xe7ba0", "yParity":"0x0"}"#;
+        let rpc_tx = r#"{"blockHash":"0x018ed80ea8340984a1f4841490284d6e51d71f9e9411feeca41e007a89fbfdff","blockNumber":"0xb81121","from":"0x7885bcbd5cecef1336b5300fb5186a12ddd8c478","gas":"0x1e8480","gasPrice":"0x0","hash":"0x5c1c3785c8bf5d7f1cb714abd1d22e32642887215602c3a14a5e9ee105bad6aa","input":"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","nonce":"0x0","to":"0x781e90f1c8fc4611c9b7497c3b47f99ef6969cbc","transactionIndex":"0x0","value":"0x0","type":"0x7e","v":"0x0","r":"0x0","s":"0x0","sender":"0x7885bcbd5cecef1336b5300fb5186a12ddd8c478","queueIndex":"0xe7ba0", "yParity":"0x0"}"#;
 
         let tx = serde_json::from_str::<Transaction>(rpc_tx).unwrap();