diff --git a/crates/orderbook/src/api/get_user_orders.rs b/crates/orderbook/src/api/get_user_orders.rs
index f4fc4f7f62..77783b29bf 100644
--- a/crates/orderbook/src/api/get_user_orders.rs
+++ b/crates/orderbook/src/api/get_user_orders.rs
@@ -1,7 +1,7 @@
 use {
     crate::{api::ApiReply, orderbook::Orderbook},
+    alloy::primitives::Address,
     anyhow::Result,
-    primitive_types::H160,
     serde::Deserialize,
     std::{convert::Infallible, sync::Arc},
     warp::{Filter, Rejection, hyper::StatusCode, reply::with_status},
@@ -13,8 +13,8 @@ struct Query {
     limit: Option<u64>,
 }
 
-fn request() -> impl Filter<Extract = (H160, Query), Error = Rejection> + Clone {
-    warp::path!("v1" / "account" / H160 / "orders")
+fn request() -> impl Filter<Extract = (Address, Query), Error = Rejection> + Clone {
+    warp::path!("v1" / "account" / Address / "orders")
         .and(warp::get())
         .and(warp::query::<Query>())
 }
@@ -22,7 +22,7 @@ fn request() -> impl Filter<Extract = (H160, Query), Error = Rejection> + Clone
 pub fn get_user_orders(
     orderbook: Arc<Orderbook>,
 ) -> impl Filter<Extract = (ApiReply,), Error = Rejection> + Clone {
-    request().and_then(move |owner: H160, query: Query| {
+    request().and_then(move |owner: Address, query: Query| {
         let orderbook = orderbook.clone();
         async move {
             const DEFAULT_OFFSET: u64 = 0;
@@ -54,7 +54,7 @@ pub fn get_user_orders(
 
 #[cfg(test)]
 mod tests {
-    use {super::*, shared::addr};
+    use super::*;
 
     #[tokio::test]
     async fn request_() {
@@ -65,7 +65,7 @@ mod tests {
             .filter(&request())
             .await
             .unwrap();
-        assert_eq!(result.0, addr!("0000000000000000000000000000000000000001"));
+        assert_eq!(result.0, Address::with_last_byte(1));
         assert_eq!(result.1.offset, None);
         assert_eq!(result.1.limit, None);
 
diff --git a/crates/orderbook/src/database/orders.rs b/crates/orderbook/src/database/orders.rs
index 21630021e7..50348b6378 100644
--- a/crates/orderbook/src/database/orders.rs
+++ b/crates/orderbook/src/database/orders.rs
@@ -72,7 +72,7 @@ pub trait OrderStoring: Send + Sync {
     /// orders first).
     async fn user_orders(
         &self,
-        owner: &H160,
+        owner: &Address,
         offset: u64,
         limit: Option<u64>,
     ) -> Result<Vec<Order>>;
@@ -329,7 +329,7 @@ impl OrderStoring for Postgres {
 
     async fn user_orders(
         &self,
-        owner: &H160,
+        owner: &Address,
         offset: u64,
         limit: Option<u64>,
     ) -> Result<Vec<Order>> {
@@ -341,7 +341,7 @@ impl OrderStoring for Postgres {
         let mut ex = self.pool.acquire().await?;
         database::order_history::user_orders(
             &mut ex,
-            &ByteArray(owner.0),
+            &ByteArray(owner.0.0),
             i64::try_from(offset).unwrap_or(i64::MAX),
             limit.map(|l| i64::try_from(l).unwrap_or(i64::MAX)),
         )
@@ -641,6 +641,7 @@ mod tests {
                 SigningScheme as DbSigningScheme,
             },
         },
+        ethrpc::alloy::conversions::IntoAlloy,
         model::{
             interaction::InteractionData,
             order::{Order, OrderData, OrderMetadata, OrderStatus, OrderUid},
@@ -904,7 +905,7 @@ mod tests {
             .unwrap();
 
         let order_statuses = db
-            .user_orders(&owner, 0, None)
+            .user_orders(&owner.into_alloy(), 0, None)
             .await
             .unwrap()
             .iter()
diff --git a/crates/orderbook/src/orderbook.rs b/crates/orderbook/src/orderbook.rs
index 26343278a7..ba040e8ff9 100644
--- a/crates/orderbook/src/orderbook.rs
+++ b/crates/orderbook/src/orderbook.rs
@@ -7,7 +7,7 @@ use {
         dto,
         solver_competition::{Identifier, LoadSolverCompetitionError, SolverCompetitionStoring},
     },
-    alloy::primitives::B256,
+    alloy::primitives::{Address, B256},
     anyhow::{Context, Result},
     app_data::{AppDataHash, Validator},
     bigdecimal::ToPrimitive,
@@ -512,7 +512,7 @@ impl Orderbook {
 
     pub async fn get_user_orders(
         &self,
-        owner: &H160,
+        owner: &Address,
         offset: u64,
         limit: u64,
     ) -> Result<Vec<Order>> {