diff --git a/Cargo.toml b/Cargo.toml
index 8d6a0f8..5d3ff1b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,9 +8,9 @@ members = [
 [workspace.dependencies]
 anyhow = "1.0"
 libc = "0.2"
-nix = { version = "0.26", default-features = false, features = ["fs", "feature", "process", "ptrace", "uio"] }
+nix = { version = "0.29", default-features = false, features = ["fs", "feature", "process", "ptrace", "uio"] }
 smallvec = "1.8"
-thiserror = "1.0"
+thiserror = "2.0"
 tracing = "0.1"
 tracing-subscriber = "0.3.17"
-zerocopy = { version = "0.7.32", features = ["derive"] }
+zerocopy = { version = "0.8", features = ["derive"] }
diff --git a/elfcore-sample/src/main.rs b/elfcore-sample/src/main.rs
index c41e304..7ee0ebc 100644
--- a/elfcore-sample/src/main.rs
+++ b/elfcore-sample/src/main.rs
@@ -20,7 +20,7 @@ use tracing::Level;
 pub fn main() -> anyhow::Result<()> {
     let mut args = std::env::args().skip(1).peekable();
 
-    let level = if args.peek().map_or(false, |x| x == "-v") {
+    let level = if args.peek().is_some_and(|x| x == "-v") {
         args.next();
         Level::DEBUG
     } else {
diff --git a/elfcore/src/arch/aarch64.rs b/elfcore/src/arch/aarch64.rs
index c394fa2..cbcfaf3 100644
--- a/elfcore/src/arch/aarch64.rs
+++ b/elfcore/src/arch/aarch64.rs
@@ -3,13 +3,12 @@
 
 //! Aarch64 specifics for ELF core dump files.
 
-#![cfg(target_arch = "aarch64")]
-
 use super::ArchComponentState;
 use crate::ptrace::ptrace_get_reg_set;
 use crate::CoreError;
 use nix::unistd::Pid;
-use zerocopy::AsBytes;
+use zerocopy::Immutable;
+use zerocopy::IntoBytes;
 
 // aarch64 machine
 pub const EM_AARCH64: u16 = 183;
@@ -21,7 +20,7 @@ pub const NT_ARM_HW_WATCH: u32 = 0x403;
 pub const NT_ARM_SYSTEM_CALL: u32 = 0x404;
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, AsBytes)]
+#[derive(Clone, Copy, Debug, IntoBytes, Immutable)]
 pub struct elf_gregset_t {
     pub regs: [u64; 31],
     pub sp: u64,
diff --git a/elfcore/src/arch/mod.rs b/elfcore/src/arch/mod.rs
index a56ce85..fee8eec 100644
--- a/elfcore/src/arch/mod.rs
+++ b/elfcore/src/arch/mod.rs
@@ -21,6 +21,7 @@ pub use aarch64::elf_gregset_t;
 
 #[derive(Debug)]
 pub struct ArchComponentState {
+    #[allow(unused)]
     pub name: &'static str,
     pub note_type: u32,
     pub note_name: &'static [u8],
@@ -31,6 +32,7 @@ pub trait Arch {
     const EM_ELF_MACHINE: u16;
 
     fn new(pid: Pid) -> Result<Box<Self>, CoreError>;
+    #[allow(unused)]
     fn name() -> &'static str;
     fn greg_set(&self) -> elf_gregset_t;
     fn components(&self) -> &Vec<ArchComponentState>;
diff --git a/elfcore/src/arch/x86_64.rs b/elfcore/src/arch/x86_64.rs
index 8e3bba4..19f0690 100644
--- a/elfcore/src/arch/x86_64.rs
+++ b/elfcore/src/arch/x86_64.rs
@@ -3,13 +3,12 @@
 
 //! x86_64 specifics for ELF core dump files.
 
-#![cfg(target_arch = "x86_64")]
-
 use super::ArchComponentState;
 use crate::ptrace::ptrace_get_reg_set;
 use crate::CoreError;
 use nix::unistd::Pid;
-use zerocopy::AsBytes;
+use zerocopy::Immutable;
+use zerocopy::IntoBytes;
 
 // amd64 machine
 pub const EM_X86_64: u16 = 62;
@@ -18,7 +17,7 @@ pub const EM_X86_64: u16 = 62;
 pub const NT_X86_XSTATE: u32 = 0x202;
 
 #[repr(C, packed)]
-#[derive(Clone, Copy, Debug, AsBytes)]
+#[derive(Clone, Copy, Debug, IntoBytes, Immutable)]
 pub struct elf_gregset_t {
     r15: u64,
     r14: u64,
diff --git a/elfcore/src/coredump.rs b/elfcore/src/coredump.rs
index b7712c5..f8603eb 100644
--- a/elfcore/src/coredump.rs
+++ b/elfcore/src/coredump.rs
@@ -32,8 +32,9 @@ use std::io::Read;
 use std::io::Seek;
 use std::io::Write;
 use std::slice;
-use zerocopy::AsBytes;
-use zerocopy::FromZeroes;
+use zerocopy::FromZeros;
+use zerocopy::Immutable;
+use zerocopy::IntoBytes;
 
 const ELF_HEADER_ALIGN: usize = 8;
 const ELF_NOTE_ALIGN: usize = 4;
@@ -91,14 +92,14 @@ where
     }
 }
 
-#[derive(AsBytes)]
+#[derive(IntoBytes, Immutable)]
 #[repr(C, packed)]
 struct MappedFilesNoteIntro {
     file_count: u64,
     page_size: u64,
 }
 
-#[derive(AsBytes)]
+#[derive(IntoBytes, Immutable)]
 #[repr(C, packed)]
 struct MappedFilesNoteItem {
     start_addr: u64,
@@ -437,7 +438,7 @@ fn get_aux_vector(pid: Pid) -> Result<Vec<Elf64_Auxv>, CoreError> {
             a_val: 0,
         };
 
-        match file.read_exact(aux.as_bytes_mut()) {
+        match file.read_exact(aux.as_mut_bytes()) {
             Ok(_) => auxv.push(aux),
             Err(_) => break,
         }
@@ -541,7 +542,7 @@ fn get_va_regions(pid: Pid) -> Result<(Vec<VaRegion>, Vec<MappedFile>, u64), Cor
                     let mut elf_hdr = Elf64_Ehdr::new_zeroed();
                     match process_vm_readv(
                         pid,
-                        &mut [IoSliceMut::new(elf_hdr.as_bytes_mut())],
+                        &mut [IoSliceMut::new(elf_hdr.as_mut_bytes())],
                         &[RemoteIoVec {
                             base: begin as usize,
                             len: std::mem::size_of::<Elf64_Ehdr>(),
diff --git a/elfcore/src/elf.rs b/elfcore/src/elf.rs
index 0907023..06a48ca 100644
--- a/elfcore/src/elf.rs
+++ b/elfcore/src/elf.rs
@@ -6,9 +6,9 @@
 //! constrained environment.
 
 use super::arch;
-use zerocopy::AsBytes;
 use zerocopy::FromBytes;
-use zerocopy::FromZeroes;
+use zerocopy::Immutable;
+use zerocopy::IntoBytes;
 
 pub const EI_MAG0: usize = 0;
 pub const EI_MAG1: usize = 1;
@@ -63,7 +63,7 @@ pub const NT_SIGINFO: u32 = 0x53494749;
 pub const NT_FILE: u32 = 0x46494c45;
 
 /// Program status
-#[derive(AsBytes)]
+#[derive(IntoBytes, Immutable)]
 #[repr(C)]
 pub struct prpsinfo_t {
     // total size (bytes):  136
@@ -84,7 +84,7 @@ pub struct prpsinfo_t {
 }
 
 /// Signal information
-#[derive(AsBytes)]
+#[derive(IntoBytes, Immutable)]
 #[repr(C)]
 pub struct siginfo_t {
     // total size (bytes):  128
@@ -96,7 +96,7 @@ pub struct siginfo_t {
 }
 
 /// Kernel time value
-#[derive(AsBytes)]
+#[derive(IntoBytes, Immutable)]
 #[repr(C)]
 pub struct pr_timeval_t {
     pub tv_sec: u64,
@@ -104,7 +104,7 @@ pub struct pr_timeval_t {
 }
 
 /// Program status
-#[derive(AsBytes)]
+#[derive(IntoBytes, Immutable)]
 #[repr(C)]
 pub struct prstatus_t {
     // total size (bytes):  336 (x86_64)
@@ -129,7 +129,7 @@ pub struct prstatus_t {
 }
 
 /// ELF auxiliary vector note
-#[derive(AsBytes, FromBytes, FromZeroes, Clone, Copy, Debug)]
+#[derive(IntoBytes, FromBytes, Immutable, Clone, Copy, Debug)]
 #[repr(C)]
 pub struct Elf64_Auxv {
     pub a_type: u64, // from auxvec.h
@@ -137,7 +137,7 @@ pub struct Elf64_Auxv {
 }
 
 /// ELF note header
-#[derive(AsBytes)]
+#[derive(IntoBytes, Immutable)]
 #[repr(C)]
 pub struct Elf64_Nhdr {
     pub namesz: u32,
@@ -146,7 +146,7 @@ pub struct Elf64_Nhdr {
 }
 
 /// ELF header
-#[derive(AsBytes, FromBytes, FromZeroes)]
+#[derive(IntoBytes, FromBytes, Immutable)]
 #[repr(C)]
 pub struct Elf64_Ehdr {
     pub e_ident: [u8; 16],
diff --git a/elfcore/src/ptrace.rs b/elfcore/src/ptrace.rs
index da7fa0d..97eb100 100644
--- a/elfcore/src/ptrace.rs
+++ b/elfcore/src/ptrace.rs
@@ -13,10 +13,13 @@ use nix::sys;
 use nix::sys::ptrace::Request;
 use nix::sys::ptrace::RequestType;
 use nix::unistd::Pid;
-use zerocopy::AsBytes;
 use zerocopy::FromBytes;
+use zerocopy::IntoBytes;
 
-pub fn ptrace_get_reg_set<T: AsBytes + FromBytes>(pid: Pid, set: u32) -> Result<Vec<T>, CoreError> {
+pub fn ptrace_get_reg_set<T: IntoBytes + FromBytes>(
+    pid: Pid,
+    set: u32,
+) -> Result<Vec<T>, CoreError> {
     let mut data = Vec::with_capacity(0x1000 / std::mem::size_of::<T>());
     let vec = nix::libc::iovec {
         iov_base: data.as_mut_ptr() as *mut c_void,