diff --git a/Cargo.lock b/Cargo.lock
index c348f6e5..f224ca50 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -391,7 +391,7 @@ dependencies = [
 [[package]]
 name = "beacon-api-client"
 version = "0.1.0"
-source = "git+https://github.com/ralexstokes/beacon-api-client?rev=56a290c#56a290ca9d2c67086917a0929cdf2fe35e5f917f"
+source = "git+https://github.com/ralexstokes/beacon-api-client?rev=d838d93#d838d930f80fdfcadfe32147bcb2e805aec074bc"
 dependencies = [
  "clap",
  "ethereum-consensus",
@@ -860,7 +860,7 @@ dependencies = [
 [[package]]
 name = "ethereum-consensus"
 version = "0.1.1"
-source = "git+https://github.com/ralexstokes/ethereum-consensus?rev=56418ea#56418ea4c376470c7d75eb12f75bc882e1a92ca6"
+source = "git+https://github.com/ralexstokes/ethereum-consensus?rev=2bcb975#2bcb97563bb8dcb15802d1a280b58f21577ea3e2"
 dependencies = [
  "async-stream",
  "blst",
diff --git a/Cargo.toml b/Cargo.toml
index 5b4c026b..10fa7777 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,6 +4,6 @@ members = ["bin/mev", "mev-boost-rs", "mev-relay-rs", "mev-build-rs", "mev-rs"]
 default-members = ["bin/mev"]
 
 [workspace.dependencies]
-ethereum-consensus = { git = "https://github.com/ralexstokes/ethereum-consensus", rev = "56418ea" }
-beacon-api-client = { git = "https://github.com/ralexstokes/beacon-api-client", rev = "56a290c" }
+ethereum-consensus = { git = "https://github.com/ralexstokes/ethereum-consensus", rev = "2bcb975" }
+beacon-api-client = { git = "https://github.com/ralexstokes/beacon-api-client", rev = "d838d93" }
 ssz_rs = "0.9.0"
diff --git a/mev-rs/src/blinded_block_relayer/api/client.rs b/mev-rs/src/blinded_block_relayer/api/client.rs
index e868c1e9..77c8ec43 100644
--- a/mev-rs/src/blinded_block_relayer/api/client.rs
+++ b/mev-rs/src/blinded_block_relayer/api/client.rs
@@ -1,9 +1,9 @@
 use crate::{
     blinded_block_relayer::BlindedBlockRelayer,
-    types::{ProposerSchedule, SignedBidReceipt, SignedBidSubmission},
+    types::{ProposerSchedule, SignedBidSubmission},
     Error,
 };
-use beacon_api_client::{mainnet::Client as BeaconApiClient, ApiResult, Error as ApiError};
+use beacon_api_client::{api_error_or_ok, mainnet::Client as BeaconApiClient};
 
 /// A `Client` for a service implementing the Relay APIs.
 #[derive(Clone)]
@@ -24,15 +24,8 @@ impl BlindedBlockRelayer for Client {
     }
 
     // TODO support content types
-    async fn submit_bid(
-        &self,
-        signed_submission: &SignedBidSubmission,
-    ) -> Result<SignedBidReceipt, Error> {
+    async fn submit_bid(&self, signed_submission: &SignedBidSubmission) -> Result<(), Error> {
         let response = self.api.http_post("/relay/v1/builder/blocks", signed_submission).await?;
-        let receipt: ApiResult<SignedBidReceipt> = response.json().await.map_err(ApiError::from)?;
-        match receipt {
-            ApiResult::Ok(receipt) => Ok(receipt),
-            ApiResult::Err(err) => Err(ApiError::from(err).into()),
-        }
+        api_error_or_ok(response).await.map_err(From::from)
     }
 }
diff --git a/mev-rs/src/blinded_block_relayer/api/server.rs b/mev-rs/src/blinded_block_relayer/api/server.rs
index a0153cab..4b7d6840 100644
--- a/mev-rs/src/blinded_block_relayer/api/server.rs
+++ b/mev-rs/src/blinded_block_relayer/api/server.rs
@@ -1,7 +1,7 @@
 use crate::{
     blinded_block_relayer::BlindedBlockRelayer,
     error::Error,
-    types::{ProposerSchedule, SignedBidReceipt, SignedBidSubmission},
+    types::{ProposerSchedule, SignedBidSubmission},
 };
 use axum::{
     extract::{Json, State},
@@ -25,9 +25,9 @@ async fn handle_get_proposal_schedule<R: BlindedBlockRelayer>(
 async fn handle_submit_bid<R: BlindedBlockRelayer>(
     State(relayer): State<R>,
     Json(signed_bid_submission): Json<SignedBidSubmission>,
-) -> Result<Json<SignedBidReceipt>, Error> {
+) -> Result<(), Error> {
     tracing::info!("handling bid submission");
-    Ok(Json(relayer.submit_bid(&signed_bid_submission).await?))
+    relayer.submit_bid(&signed_bid_submission).await
 }
 
 pub struct Server<R: BlindedBlockRelayer> {
diff --git a/mev-rs/src/blinded_block_relayer/mod.rs b/mev-rs/src/blinded_block_relayer/mod.rs
index e85271b1..11b375ef 100644
--- a/mev-rs/src/blinded_block_relayer/mod.rs
+++ b/mev-rs/src/blinded_block_relayer/mod.rs
@@ -6,7 +6,7 @@ pub use {api::client::Client, api::server::Server};
 
 use crate::{
     error::Error,
-    types::{ProposerSchedule, SignedBidReceipt, SignedBidSubmission},
+    types::{ProposerSchedule, SignedBidSubmission},
 };
 use async_trait::async_trait;
 
@@ -15,8 +15,5 @@ pub trait BlindedBlockRelayer {
     async fn get_proposal_schedule(&self) -> Result<Vec<ProposerSchedule>, Error>;
 
     // TODO: support cancellations?
-    async fn submit_bid(
-        &self,
-        signed_submission: &SignedBidSubmission,
-    ) -> Result<SignedBidReceipt, Error>;
+    async fn submit_bid(&self, signed_submission: &SignedBidSubmission) -> Result<(), Error>;
 }
diff --git a/mev-rs/src/types/mod.rs b/mev-rs/src/types/mod.rs
index 8f33b143..874367c5 100644
--- a/mev-rs/src/types/mod.rs
+++ b/mev-rs/src/types/mod.rs
@@ -365,7 +365,7 @@ pub struct ProposerSchedule {
     pub entry: SignedValidatorRegistration,
 }
 
-#[derive(Debug, Default, Clone)]
+#[derive(Debug, Default, Clone, SimpleSerialize)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct BidTrace {
     #[serde(with = "crate::serde::as_string")]
@@ -374,6 +374,8 @@ pub struct BidTrace {
     pub block_hash: Hash32,
     #[serde(rename = "builder_pubkey")]
     pub builder_public_key: BlsPublicKey,
+    #[serde(rename = "proposer_pubkey")]
+    pub proposer_public_key: BlsPublicKey,
     pub proposer_fee_recipient: ExecutionAddress,
     #[serde(with = "crate::serde::as_string")]
     pub gas_limit: u64,
@@ -386,21 +388,7 @@ pub struct BidTrace {
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct SignedBidSubmission {
     pub message: BidTrace,
-    pub execution_payload: ExecutionPayload,
-    pub signature: BlsSignature,
-}
-
-#[derive(Debug, Default, Clone)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
-pub struct BidReceipt {
-    #[serde(with = "crate::serde::as_string")]
-    pub receive_timestamp: u64,
-    pub bid_trace: BidTrace,
-}
-
-#[derive(Debug, Default, Clone)]
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
-pub struct SignedBidReceipt {
-    pub message: BidReceipt,
+    // TODO: support multiple forks
+    pub execution_payload: capella::ExecutionPayload,
     pub signature: BlsSignature,
 }