diff --git a/Cargo.toml b/Cargo.toml
index 35d0f61..c8c162a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,4 +10,4 @@ license = "Apache-2.0"
 edition = "2021"
 
 [dependencies]
-zerocopy = { version = "0.7.1", features = ["derive"] }
+zerocopy = { version = "0.8.23", features = ["derive"] }
diff --git a/src/bert.rs b/src/bert.rs
index 1df8285..a471583 100644
--- a/src/bert.rs
+++ b/src/bert.rs
@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 extern crate alloc;
 
@@ -17,7 +20,7 @@ type U64 = byteorder::U64<LE>;
 /// unhandled errors that occurred in the previous boot. The format of
 /// the Boot Error Region follows that of an `Error Status Block`.
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct BERT {
     header: TableHeader,
     error_region_length: U32,
diff --git a/src/cedt.rs b/src/cedt.rs
index 3f1bab6..f739c50 100644
--- a/src/cedt.rs
+++ b/src/cedt.rs
@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::AsBytes;
+use zerocopy::IntoBytes;
 
 extern crate alloc;
 use alloc::{boxed::Box, vec::Vec};
diff --git a/src/facs.rs b/src/facs.rs
index ffb42c3..80b751e 100644
--- a/src/facs.rs
+++ b/src/facs.rs
@@ -4,13 +4,16 @@
 //
 
 use crate::{Aml, AmlSink};
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 type U32 = byteorder::U32<LE>;
 type U64 = byteorder::U64<LE>;
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Default, AsBytes)]
+#[derive(Clone, Copy, Default, IntoBytes, Immutable)]
 pub struct FACS {
     pub signature: [u8; 4],
     pub length: U32,
diff --git a/src/fadt.rs b/src/fadt.rs
index da240cc..51bfdb5 100644
--- a/src/fadt.rs
+++ b/src/fadt.rs
@@ -4,7 +4,7 @@
 //
 
 use crate::{gas::GAS, Aml, AmlSink};
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{byteorder, byteorder::LE, Immutable, IntoBytes};
 
 type U16 = byteorder::U16<LE>;
 type U32 = byteorder::U32<LE>;
@@ -64,7 +64,7 @@ pub enum PmProfile {
 }
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Default, AsBytes)]
+#[derive(Clone, Copy, Default, IntoBytes, Immutable)]
 pub struct FADTBuilder {
     pub signature: [u8; 4],
     pub length: U32,
diff --git a/src/gas.rs b/src/gas.rs
index 083b70e..3f6f836 100644
--- a/src/gas.rs
+++ b/src/gas.rs
@@ -4,12 +4,12 @@
 //
 
 use crate::{Aml, AmlSink};
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{byteorder, byteorder::LE, Immutable, IntoBytes};
 
 type U64 = byteorder::U64<LE>;
 
 #[repr(u8)]
-#[derive(Clone, Copy, Debug, AsBytes, Default)]
+#[derive(Clone, Copy, Debug, IntoBytes, Default, Immutable)]
 pub enum AddressSpace {
     #[default]
     SystemMemory = 0x0,
@@ -28,7 +28,7 @@ pub enum AddressSpace {
 }
 
 #[repr(u8)]
-#[derive(Clone, Copy, Debug, AsBytes, Default)]
+#[derive(Clone, Copy, Debug, IntoBytes, Default, Immutable)]
 pub enum AccessSize {
     #[default]
     Undefined = 0,
@@ -39,7 +39,7 @@ pub enum AccessSize {
 }
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, AsBytes, Default)]
+#[derive(Clone, Copy, Debug, IntoBytes, Default, Immutable)]
 pub struct GAS {
     pub address_space_id: AddressSpace,
     pub register_bit_width: u8,
diff --git a/src/hest.rs b/src/hest.rs
index c2f88fd..c18bb15 100644
--- a/src/hest.rs
+++ b/src/hest.rs
@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 extern crate alloc;
 use alloc::{boxed::Box, vec::Vec};
@@ -74,7 +77,7 @@ impl HEST {
 
     pub fn add_structure<T>(&mut self, t: T)
     where
-        T: Aml + AsBytes + Clone + 'static,
+        T: Aml + IntoBytes + Immutable + Clone + 'static,
     {
         self.update_header(t.as_bytes());
         self.structures.push(Box::new(t));
@@ -97,7 +100,7 @@ impl Aml for HEST {
 /// This structure contains information for configuring AER support on
 /// a given root port.
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct PcieAerRootPort {
     r#type: U16,
     source_id: U16,
@@ -189,7 +192,7 @@ aml_as_bytes!(PcieAerRootPort);
 /// otherwise there should be one entry for each device that supports
 /// AER.
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct PcieAerDevice {
     r#type: U16,
     source_id: U16,
@@ -250,7 +253,7 @@ aml_as_bytes!(PcieAerDevice);
 /// PCIe/PCI-X bridges that support AER implement fields that control
 /// the behavior of how errors are reported across the bridge.
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct PcieAerBridge {
     r#type: U16,
     source_id: U16,
@@ -321,7 +324,7 @@ aml_as_bytes!(PcieAerBridge);
 /// for configure and control operations, therefore the error source
 /// must be configured by firmware during boot.
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct GenericHardwareSource {
     r#type: U16,
     source_id: U16,
@@ -366,7 +369,7 @@ impl GenericHardwareSource {
 aml_as_bytes!(GenericHardwareSource);
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct NotificationStructure {
     r#type: NotificationType,
     length: u8,
@@ -400,7 +403,7 @@ impl NotificationStructure {
 aml_as_bytes!(NotificationStructure);
 
 #[repr(u8)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub enum NotificationType {
     #[default]
     Polled = 0,
@@ -422,7 +425,7 @@ pub enum NotificationType {
 }
 
 #[repr(u32)]
-#[derive(Copy, Clone, Debug, AsBytes, Default)]
+#[derive(Copy, Clone, Debug, IntoBytes, Immutable, Default)]
 pub enum ErrorSeverity {
     Recoverable = 0,
     Fatal = 1,
@@ -543,7 +546,7 @@ impl Aml for GenericErrorData {
 /// for HW-reduced platforms that rely on "RAS controllers" to generate generic
 /// error records.
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct GenericHardwareSourceV2 {
     r#type: U16,
     source_id: U16,
diff --git a/src/hmat.rs b/src/hmat.rs
index 516094a..898a331 100644
--- a/src/hmat.rs
+++ b/src/hmat.rs
@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 extern crate alloc;
 use alloc::{boxed::Box, vec, vec::Vec};
@@ -101,7 +104,7 @@ impl Aml for HMAT {
 // by the memory subsystem and its associativity with a processor
 // proximity domain.
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct MemoryProximityDomain {
     r#type: U16,
     _reserved0: U16,
diff --git a/src/lib.rs b/src/lib.rs
index 55ac2cf..c30c0c8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -34,7 +34,10 @@ pub mod xsdt;
 
 extern crate alloc;
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 type U32 = byteorder::U32<LE>;
 
@@ -89,7 +92,7 @@ impl AmlSink for alloc::vec::Vec<u8> {
 
 /// Standard header for many ACPI tables
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 struct TableHeader {
     pub signature: [u8; 4],
     pub length: U32,
diff --git a/src/madt.rs b/src/madt.rs
index b0c05af..9c9d777 100644
--- a/src/madt.rs
+++ b/src/madt.rs
@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 extern crate alloc;
 use alloc::{boxed::Box, vec::Vec};
@@ -30,7 +33,7 @@ enum MadtStructureType {
 }
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 struct Header {
     table_header: TableHeader,
     /// Must be ignored by OSPM for RISC-V
@@ -111,7 +114,7 @@ impl MADT {
 
     pub fn add_structure<T>(&mut self, t: T)
     where
-        T: Aml + AsBytes + Clone + 'static,
+        T: Aml + IntoBytes + Immutable + Clone + 'static,
     {
         self.update_header(t.as_bytes());
         self.structures.push(Box::new(t));
@@ -136,7 +139,7 @@ impl Aml for MADT {
 
 /// Processor-Local APIC
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct ProcessorLocalApic {
     r#type: u8,
     length: u8,
@@ -169,7 +172,7 @@ aml_as_bytes!(ProcessorLocalApic);
 
 /// I/O APIC
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct IoApic {
     r#type: u8,
     length: u8,
@@ -196,7 +199,7 @@ aml_as_bytes!(IoApic);
 
 /// GIC CPU Interface (GICC)
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct Gicc {
     r#type: u8,
     length: u8,
@@ -302,7 +305,7 @@ pub enum GicVersion {
 
 /// GIC Distributor (GICD) Structure
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct Gicd {
     r#type: u8,
     length: u8,
@@ -334,7 +337,7 @@ aml_as_bytes!(Gicd);
 
 /// GIC MSI Frame Structure
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct GicMsi {
     r#type: u8,
     length: u8,
@@ -372,7 +375,7 @@ aml_as_bytes!(GicMsi);
 
 /// GIC Redistributor (GICR) Structure
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct Gicr {
     r#type: u8,
     length: u8,
@@ -398,7 +401,7 @@ aml_as_bytes!(Gicr);
 
 /// GIC Interrupt Translation Service (ITS) Structure
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct GicIts {
     r#type: u8,
     length: u8,
@@ -428,7 +431,7 @@ aml_as_bytes!(GicIts);
 /// RISC-V platforms need to have a simple, per-hart interrupt controller
 /// available to supervisor mode.
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct RINTC {
     r#type: u8,
     length: u8,
@@ -486,7 +489,7 @@ aml_as_bytes!(RINTC);
 // provides information common across processors. The per-processor
 // information will be provided by the RINTC structure.
 #[repr(C, packed)]
-#[derive(Copy, Clone, Debug, Default, AsBytes)]
+#[derive(Copy, Clone, Debug, Default, IntoBytes, Immutable)]
 pub struct IMSIC {
     r#type: u8,
     length: u8,
@@ -547,7 +550,7 @@ aml_as_bytes!(IMSIC);
 // interrupts only in the form of MSIs. In that case, the role of an
 // APLIC is to convert wired interrupts into MSIs for harts.
 #[repr(C, packed)]
-#[derive(Copy, Clone, Debug, AsBytes)]
+#[derive(Copy, Clone, Debug, IntoBytes, Immutable)]
 pub struct APLIC {
     r#type: u8,
     length: u8,
@@ -596,7 +599,7 @@ assert_same_size!(APLIC, [u8; 36]);
 aml_as_bytes!(APLIC);
 
 #[repr(C, packed)]
-#[derive(Copy, Clone, Debug, AsBytes)]
+#[derive(Copy, Clone, Debug, IntoBytes, Immutable)]
 pub struct PLIC {
     r#type: u8,
     length: u8,
diff --git a/src/mcfg.rs b/src/mcfg.rs
index a8e9ac4..69d881b 100644
--- a/src/mcfg.rs
+++ b/src/mcfg.rs
@@ -7,7 +7,10 @@ extern crate alloc;
 
 use crate::{Aml, AmlSink, Checksum, TableHeader};
 use alloc::vec::Vec;
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 type U16 = byteorder::U16<LE>;
 type U64 = byteorder::U64<LE>;
@@ -85,7 +88,7 @@ impl Aml for MCFG {
 }
 
 #[repr(C, packed)]
-#[derive(Copy, Clone, Debug, Default, AsBytes)]
+#[derive(Copy, Clone, Debug, Default, IntoBytes, Immutable)]
 struct EcamEntry {
     base_addr: U64,
     segment: U16,
diff --git a/src/pptt.rs b/src/pptt.rs
index f84cd42..1fa2dbb 100644
--- a/src/pptt.rs
+++ b/src/pptt.rs
@@ -6,7 +6,10 @@
 extern crate alloc;
 use alloc::{boxed::Box, vec::Vec};
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 use crate::{aml_as_bytes, u8sum, Aml, AmlSink, Checksum, TableHeader};
 
@@ -295,7 +298,7 @@ impl CacheNodeBuilder {
 }
 
 #[repr(C, packed)]
-#[derive(Copy, Clone, Debug, Default, AsBytes)]
+#[derive(Copy, Clone, Debug, Default, IntoBytes, Immutable)]
 pub struct CacheNode {
     r#type: u8,
     length: u8,
diff --git a/src/rhct.rs b/src/rhct.rs
index 7401a9d..95b0898 100644
--- a/src/rhct.rs
+++ b/src/rhct.rs
@@ -7,13 +7,16 @@ extern crate alloc;
 
 use crate::{u8sum, Aml, AmlSink, Checksum, TableHeader};
 use alloc::{boxed::Box, vec, vec::Vec};
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 type U32 = byteorder::U32<LE>;
 type U64 = byteorder::U64<LE>;
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Default, AsBytes)]
+#[derive(Clone, Copy, Default, IntoBytes, Immutable)]
 struct Header {
     table_header: TableHeader,
     _reserved: u32,
diff --git a/src/rimt.rs b/src/rimt.rs
index 0dd2517..0c1c95f 100644
--- a/src/rimt.rs
+++ b/src/rimt.rs
@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::AsBytes;
+use zerocopy::IntoBytes;
 
 extern crate alloc;
 use alloc::{boxed::Box, string::String, vec::Vec};
diff --git a/src/rqsc.rs b/src/rqsc.rs
index 65710da..5ad6921 100644
--- a/src/rqsc.rs
+++ b/src/rqsc.rs
@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 extern crate alloc;
 use alloc::vec::Vec;
@@ -282,7 +285,7 @@ impl Aml for ResourceID {
     }
 }
 
-#[derive(Clone, Debug, Default, AsBytes)]
+#[derive(Clone, Debug, Default, IntoBytes, Immutable)]
 #[repr(C, packed)]
 pub struct CacheResource {
     // Resource ID 1
@@ -305,7 +308,7 @@ impl CacheResource {
     }
 }
 
-#[derive(Clone, Debug, Default, AsBytes)]
+#[derive(Clone, Debug, Default, IntoBytes, Immutable)]
 #[repr(C, packed)]
 pub struct MemoryAffinityStructureResource {
     // Resource ID 1
@@ -335,7 +338,7 @@ impl MemoryAffinityStructureResource {
     }
 }
 
-#[derive(Clone, Debug, Default, AsBytes)]
+#[derive(Clone, Debug, Default, IntoBytes, Immutable)]
 #[repr(C, packed)]
 pub struct ACPIDeviceResource {
     // Resource ID 1
@@ -356,7 +359,7 @@ impl ACPIDeviceResource {
     }
 }
 
-#[derive(Clone, Debug, Default, AsBytes)]
+#[derive(Clone, Debug, Default, IntoBytes, Immutable)]
 #[repr(C, packed)]
 pub struct PCIDeviceResource {
     // Resource ID 1
diff --git a/src/rsdp.rs b/src/rsdp.rs
index 869b477..f1aee11 100644
--- a/src/rsdp.rs
+++ b/src/rsdp.rs
@@ -4,7 +4,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 type U32 = byteorder::U32<LE>;
 type U64 = byteorder::U64<LE>;
@@ -12,7 +15,7 @@ type U64 = byteorder::U64<LE>;
 use crate::{aml_as_bytes, Aml, AmlSink};
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Default, AsBytes)]
+#[derive(Clone, Copy, Default, IntoBytes, Immutable)]
 pub struct Rsdp {
     pub signature: [u8; 8],
     pub checksum: u8,
diff --git a/src/sdt.rs b/src/sdt.rs
index 08921a4..4d5672f 100644
--- a/src/sdt.rs
+++ b/src/sdt.rs
@@ -7,10 +7,10 @@ extern crate alloc;
 
 use crate::{Aml, AmlSink};
 use alloc::vec::Vec;
-use zerocopy::AsBytes;
+use zerocopy::{FromBytes, Immutable, IntoBytes};
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, AsBytes)]
+#[derive(Clone, Copy, IntoBytes, Immutable, FromBytes)]
 pub struct GenericAddress {
     pub address_space_id: u8,
     pub register_bit_width: u8,
@@ -101,7 +101,7 @@ impl Sdt {
         self.data.as_slice()
     }
 
-    pub fn append<T: AsBytes>(&mut self, value: T) {
+    pub fn append<T: IntoBytes + Immutable + FromBytes>(&mut self, value: T) {
         let orig_length = self.data.len();
         let new_length = orig_length + core::mem::size_of::<T>();
         self.data.resize(new_length, 0);
@@ -125,7 +125,7 @@ impl Sdt {
     }
 
     /// Write a value at the given offset
-    pub fn write<T: AsBytes>(&mut self, offset: usize, value: T) {
+    pub fn write<T: IntoBytes + Immutable + FromBytes>(&mut self, offset: usize, value: T) {
         self.write_bytes(offset, value.as_bytes())
     }
 
diff --git a/src/slit.rs b/src/slit.rs
index a70e9c7..b8be004 100644
--- a/src/slit.rs
+++ b/src/slit.rs
@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::AsBytes;
+use zerocopy::IntoBytes;
 
 extern crate alloc;
 use alloc::vec::Vec;
diff --git a/src/spcr.rs b/src/spcr.rs
index 7bd2414..c5915a9 100644
--- a/src/spcr.rs
+++ b/src/spcr.rs
@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 use crate::{assert_same_size, gas, Aml, AmlSink, Checksum, TableHeader};
 use core::mem::size_of;
@@ -96,7 +99,7 @@ enum SerialPortSubType {
 }
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 struct SerialPortInfo {
     interface_type: u8,
     reserved0: [u8; 3],
diff --git a/src/srat.rs b/src/srat.rs
index e0be0ec..fbc4dd6 100644
--- a/src/srat.rs
+++ b/src/srat.rs
@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 extern crate alloc;
 use alloc::{boxed::Box, vec::Vec};
@@ -284,7 +287,7 @@ impl Aml for GenericInitiator {
 }
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, Default, AsBytes)]
+#[derive(Clone, Copy, Debug, Default, IntoBytes, Immutable)]
 pub struct RintcAffinity {
     r#type: u8,
     length: u8,
diff --git a/src/tpm2.rs b/src/tpm2.rs
index 4fe232a..41a003b 100644
--- a/src/tpm2.rs
+++ b/src/tpm2.rs
@@ -3,7 +3,10 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::{byteorder, byteorder::LE, AsBytes};
+use zerocopy::{
+    byteorder::{self, LE},
+    Immutable, IntoBytes,
+};
 
 extern crate alloc;
 
@@ -70,7 +73,7 @@ impl Aml for TpmClient1_2 {
     }
 }
 
-#[derive(Copy, Clone, Default, AsBytes)]
+#[derive(Copy, Clone, Default, IntoBytes, Immutable)]
 #[repr(C, packed)]
 pub struct TpmServer1_2 {
     header: TableHeader,
diff --git a/src/viot.rs b/src/viot.rs
index db1374c..8414fef 100644
--- a/src/viot.rs
+++ b/src/viot.rs
@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 
-use zerocopy::AsBytes;
+use zerocopy::IntoBytes;
 
 extern crate alloc;
 use alloc::{boxed::Box, vec::Vec};
diff --git a/src/xsdt.rs b/src/xsdt.rs
index e972ba6..a91ee3f 100644
--- a/src/xsdt.rs
+++ b/src/xsdt.rs
@@ -7,7 +7,7 @@ extern crate alloc;
 
 use crate::{Aml, AmlSink, Checksum, TableHeader};
 use alloc::vec::Vec;
-use zerocopy::AsBytes;
+use zerocopy::IntoBytes;
 
 pub struct XSDT {
     header: TableHeader,