diff --git a/crates/papyrus_protobuf/src/converters/rpc_transaction.rs b/crates/papyrus_protobuf/src/converters/rpc_transaction.rs
index dc0b688ee34..3f20291b3b6 100644
--- a/crates/papyrus_protobuf/src/converters/rpc_transaction.rs
+++ b/crates/papyrus_protobuf/src/converters/rpc_transaction.rs
@@ -5,7 +5,6 @@ mod rpc_transaction_test;
 use prost::Message;
 use starknet_api::rpc_transaction::{
     RpcDeclareTransaction,
-    RpcDeclareTransactionV3,
     RpcDeployAccountTransaction,
     RpcDeployAccountTransactionV3,
     RpcInvokeTransaction,
@@ -13,11 +12,7 @@ use starknet_api::rpc_transaction::{
     RpcTransaction,
 };
 use starknet_api::transaction::fields::{AllResourceBounds, ValidResourceBounds};
-use starknet_api::transaction::{
-    DeclareTransactionV3,
-    DeployAccountTransactionV3,
-    InvokeTransactionV3,
-};
+use starknet_api::transaction::{DeployAccountTransactionV3, InvokeTransactionV3};
 
 use super::ProtobufConversionError;
 use crate::auto_impl_into_and_try_from_vec_u8;
@@ -86,90 +81,6 @@ impl From<RpcTransaction> for protobuf::MempoolTransaction {
     }
 }
 
-impl TryFrom<protobuf::mempool_transaction::DeclareV3> for RpcDeclareTransactionV3 {
-    type Error = ProtobufConversionError;
-    fn try_from(value: protobuf::mempool_transaction::DeclareV3) -> Result<Self, Self::Error> {
-        let declare_v3 = value.declare_v3.ok_or(ProtobufConversionError::MissingField {
-            field_description: "DeclareV3::declare_v3",
-        })?;
-        let contract_class = value
-            .contract_class
-            .ok_or(ProtobufConversionError::MissingField {
-                field_description: "DeclareV3::contract_class",
-            })?
-            .try_into()?;
-        let DeclareTransactionV3 {
-            sender_address,
-            compiled_class_hash,
-            signature,
-            nonce,
-            resource_bounds,
-            class_hash: _,
-            tip,
-            paymaster_data,
-            account_deployment_data,
-            nonce_data_availability_mode,
-            fee_data_availability_mode,
-        } = declare_v3.try_into()?;
-
-        let resource_bounds = match resource_bounds {
-            ValidResourceBounds::AllResources(resource_bounds) => resource_bounds,
-            ValidResourceBounds::L1Gas(resource_bounds) => AllResourceBounds {
-                l1_gas: resource_bounds,
-                l2_gas: Default::default(),
-                l1_data_gas: Default::default(),
-            },
-        };
-
-        Ok(Self {
-            sender_address,
-            compiled_class_hash,
-            signature,
-            nonce,
-            contract_class,
-            resource_bounds,
-            tip,
-            paymaster_data,
-            account_deployment_data,
-            nonce_data_availability_mode,
-            fee_data_availability_mode,
-        })
-    }
-}
-
-impl From<RpcDeclareTransactionV3> for protobuf::mempool_transaction::DeclareV3 {
-    fn from(value: RpcDeclareTransactionV3) -> Self {
-        let RpcDeclareTransactionV3 {
-            sender_address,
-            compiled_class_hash,
-            signature,
-            nonce,
-            contract_class,
-            resource_bounds,
-            tip,
-            paymaster_data,
-            account_deployment_data,
-            nonce_data_availability_mode,
-            fee_data_availability_mode,
-        } = value;
-        let declare_v3 = DeclareTransactionV3 {
-            resource_bounds: ValidResourceBounds::AllResources(resource_bounds),
-            tip,
-            signature,
-            nonce,
-            // TODO(Eitan): refactor the protobuf transaction to not have class_hash
-            class_hash: Default::default(),
-            compiled_class_hash,
-            sender_address,
-            nonce_data_availability_mode,
-            fee_data_availability_mode,
-            paymaster_data,
-            account_deployment_data,
-        };
-        Self { contract_class: Some(contract_class.into()), declare_v3: Some(declare_v3.into()) }
-    }
-}
-
 impl TryFrom<protobuf::transaction::DeployAccountV3> for RpcDeployAccountTransactionV3 {
     type Error = ProtobufConversionError;
     fn try_from(value: protobuf::transaction::DeployAccountV3) -> Result<Self, Self::Error> {
diff --git a/crates/papyrus_protobuf/src/proto/p2p/proto/mempool/transaction.proto b/crates/papyrus_protobuf/src/proto/p2p/proto/mempool/transaction.proto
index 6bce1e0fcc0..0908f208b06 100644
--- a/crates/papyrus_protobuf/src/proto/p2p/proto/mempool/transaction.proto
+++ b/crates/papyrus_protobuf/src/proto/p2p/proto/mempool/transaction.proto
@@ -4,24 +4,16 @@ import "p2p/proto/class.proto";
 import "p2p/proto/common.proto";
 import "p2p/proto/transaction.proto";
 import "p2p/proto/sync/transaction.proto";
-// TODO(alonl): remove this import (used only for the old Transaction struct as an intermediate step)
-import "p2p/proto/consensus/consensus.proto";
 
 
 option go_package = "github.com/starknet-io/starknet-p2pspecs/p2p/proto/mempool/transaction";
 
 // Doesn't contain L1Handler, as those don't need to be propagated and can be downloaded from L1.
 message MempoolTransaction {
-    message DeclareV3 {
-        // TODO(alonl): change declare_v3 type to TransactionInBlock.DeclareV3WithoutClass (defined in sync/transaction.proto)
-        Transaction.DeclareV3 declare_v3 = 1;
-        Cairo1Class contract_class = 2;
-    }
-
     oneof txn {
-        DeclareV3 declare_v3 = 1;
-        Transaction.DeployAccountV3 deploy_account_v3 = 2;
-        Transaction.InvokeV3 invoke_v3 = 3;
+        DeclareV3WithClass declare_v3 = 1;
+        DeployAccountV3 deploy_account_v3 = 2;
+        InvokeV3 invoke_v3 = 3;
     }
     Hash transaction_hash = 4;
 }