diff --git a/tracing/shared/primitives/ext/src/lib.rs b/tracing/shared/primitives/ext/src/lib.rs
index 2e0fe897..8762573a 100644
--- a/tracing/shared/primitives/ext/src/lib.rs
+++ b/tracing/shared/primitives/ext/src/lib.rs
@@ -1,4 +1,4 @@
-// Copyright 2019-2022 PureStake Inc.
+// Copyright 2019-2025 PureStake Inc.
 // This file is part of Moonbeam.
 
 // Moonbeam is free software: you can redistribute it and/or modify
@@ -23,7 +23,10 @@
 //! - Host functions will decode the input and emit an event `with` environmental.
 
 #![cfg_attr(not(feature = "std"), no_std)]
-use sp_runtime_interface::runtime_interface;
+use sp_runtime_interface::{
+	pass_by::{AllocateAndReturnByCodec, PassFatPointerAndRead},
+	runtime_interface,
+};
 
 use parity_scale_codec::Decode;
 use sp_std::vec::Vec;
@@ -32,20 +35,20 @@ use evm_tracing_events::{Event, EvmEvent, GasometerEvent, RuntimeEvent, StepEven
 
 #[runtime_interface]
 pub trait MoonbeamExt {
-	fn raw_step(&mut self, _data: Vec<u8>) {}
+	fn raw_step(&mut self, _data: PassFatPointerAndRead<Vec<u8>>) {}
 
-	fn raw_gas(&mut self, _data: Vec<u8>) {}
+	fn raw_gas(&mut self, _data: PassFatPointerAndRead<Vec<u8>>) {}
 
-	fn raw_return_value(&mut self, _data: Vec<u8>) {}
+	fn raw_return_value(&mut self, _data: PassFatPointerAndRead<Vec<u8>>) {}
 
-	fn call_list_entry(&mut self, _index: u32, _value: Vec<u8>) {}
+	fn call_list_entry(&mut self, _index: u32, _value: PassFatPointerAndRead<Vec<u8>>) {}
 
 	fn call_list_new(&mut self) {}
 
 	// New design, proxy events.
 	/// An `Evm` event proxied by the Moonbeam runtime to this host function.
 	/// evm -> moonbeam_runtime -> host.
-	fn evm_event(&mut self, event: Vec<u8>) {
+	fn evm_event(&mut self, event: PassFatPointerAndRead<Vec<u8>>) {
 		if let Ok(event) = EvmEvent::decode(&mut &event[..]) {
 			Event::Evm(event).emit();
 		}
@@ -53,7 +56,7 @@ pub trait MoonbeamExt {
 
 	/// A `Gasometer` event proxied by the Moonbeam runtime to this host function.
 	/// evm_gasometer -> moonbeam_runtime -> host.
-	fn gasometer_event(&mut self, event: Vec<u8>) {
+	fn gasometer_event(&mut self, event: PassFatPointerAndRead<Vec<u8>>) {
 		if let Ok(event) = GasometerEvent::decode(&mut &event[..]) {
 			Event::Gasometer(event).emit();
 		}
@@ -61,7 +64,7 @@ pub trait MoonbeamExt {
 
 	/// A `Runtime` event proxied by the Moonbeam runtime to this host function.
 	/// evm_runtime -> moonbeam_runtime -> host.
-	fn runtime_event(&mut self, event: Vec<u8>) {
+	fn runtime_event(&mut self, event: PassFatPointerAndRead<Vec<u8>>) {
 		if let Ok(event) = RuntimeEvent::decode(&mut &event[..]) {
 			Event::Runtime(event).emit();
 		}
@@ -70,7 +73,7 @@ pub trait MoonbeamExt {
 	/// Allow the tracing module in the runtime to know how to filter Step event
 	/// content, as cloning the entire data is expensive and most of the time
 	/// not necessary.
-	fn step_event_filter(&self) -> StepEventFilter {
+	fn step_event_filter(&self) -> AllocateAndReturnByCodec<StepEventFilter> {
 		evm_tracing_events::step_event_filter().unwrap_or_default()
 	}
 
diff --git a/tracing/shared/primitives/rpc/evm-tracing-events/Cargo.toml b/tracing/shared/primitives/rpc/evm-tracing-events/Cargo.toml
index fc5d6d2f..4466763b 100644
--- a/tracing/shared/primitives/rpc/evm-tracing-events/Cargo.toml
+++ b/tracing/shared/primitives/rpc/evm-tracing-events/Cargo.toml
@@ -9,7 +9,6 @@ repository = 'https://github.com/PureStake/moonbeam/'
 
 [dependencies]
 parity-scale-codec = { workspace = true }
-sp-runtime-interface = { workspace = true }
 
 ethereum = { workspace = true, features = ["with-scale"] }
 ethereum-types = { workspace = true }
diff --git a/tracing/shared/primitives/rpc/evm-tracing-events/src/lib.rs b/tracing/shared/primitives/rpc/evm-tracing-events/src/lib.rs
index af65a88f..f712c508 100644
--- a/tracing/shared/primitives/rpc/evm-tracing-events/src/lib.rs
+++ b/tracing/shared/primitives/rpc/evm-tracing-events/src/lib.rs
@@ -43,7 +43,6 @@ use ::evm::Opcode;
 use alloc::vec::Vec;
 use parity_scale_codec::{Decode, Encode};
 use ethereum_types::{H160, U256};
-use sp_runtime_interface::pass_by::PassByCodec;
 
 environmental::environmental!(listener: dyn Listener + 'static);
 
@@ -54,7 +53,7 @@ pub fn using<R, F: FnOnce() -> R>(l: &mut (dyn Listener + 'static), f: F) -> R {
 /// Allow to configure which data of the Step event
 /// we want to keep or discard. Not discarding the data requires cloning the data
 /// in the runtime which have a significant cost for each step.
-#[derive(Clone, Copy, Eq, PartialEq, Debug, Encode, Decode, Default, PassByCodec)]
+#[derive(Clone, Copy, Eq, PartialEq, Debug, Encode, Decode, Default)]
 pub struct StepEventFilter {
 	pub enable_stack: bool,
 	pub enable_memory: bool,