diff --git a/Cargo.lock b/Cargo.lock
index c39458fe57..87cdedda28 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -184,7 +184,6 @@ dependencies = [
  "slab",
  "sync",
  "sys_util",
- "syscall_defines",
  "thiserror",
 ]
 
@@ -321,7 +320,6 @@ dependencies = [
  "smallvec",
  "sync",
  "sys_util",
- "syscall_defines",
  "tempfile",
  "thiserror",
  "tpm2",
@@ -527,7 +525,6 @@ dependencies = [
  "libc",
  "sync",
  "sys_util",
- "syscall_defines",
 ]
 
 [[package]]
@@ -576,9 +573,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.81"
+version = "0.2.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1482821306169ec4d07f6aca392a4681f66c75c9918aa49641a2595db64053cb"
+checksum = "9385f66bf6105b241aa65a61cb923ef20efc665cb9f9bb50ac2f0c4b7f378d41"
 
 [[package]]
 name = "libchromeos"
@@ -1077,14 +1074,9 @@ dependencies = [
  "serde",
  "serde_json",
  "sync",
- "syscall_defines",
  "tempfile",
 ]
 
-[[package]]
-name = "syscall_defines"
-version = "0.1.0"
-
 [[package]]
 name = "tempfile"
 version = "3.0.7"
@@ -1209,7 +1201,6 @@ dependencies = [
  "cros_async",
  "data_model",
  "libc",
- "syscall_defines",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 830310960d..703e3bea74 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,7 +36,6 @@ exclude = [
     "rand_ish",
     "sync",
     "sys_util",
-    "syscall_defines",
     "tempfile",
     "vm_memory",
 ]
@@ -79,7 +78,7 @@ kernel_cmdline = { path = "kernel_cmdline" }
 kernel_loader = { path = "kernel_loader" }
 kvm = { path = "kvm", optional = true }
 kvm_sys = { path = "kvm_sys", optional = true }
-libc = "0.2.65"
+libc = "0.2.93"
 libcras = "*"
 minijail = "*" # provided by ebuild
 net_util = { path = "net_util" }
@@ -118,7 +117,6 @@ libvda = { path = "../../platform2/arc/vm/libvda/rust" } # ignored by ebuild
 minijail = { path = "../../aosp/external/minijail/rust/minijail" } # ignored by ebuild
 p9 = { path = "../../platform2/vm_tools/p9" } # ignored by ebuild
 sync = { path = "sync" }
-syscall_defines = { path = "syscall_defines" }
 sys_util = { path = "sys_util" }
 tempfile = { path = "tempfile" }
 vmm_vhost = { path = "../../third_party/rust-vmm/vhost", features = ["vhost-user-master"] } # ignored by ebuild
diff --git a/cros_async/Cargo.toml b/cros_async/Cargo.toml
index 848e461bb9..fcaf95bc7e 100644
--- a/cros_async/Cargo.toml
+++ b/cros_async/Cargo.toml
@@ -16,7 +16,6 @@ slab = "0.4"
 sync = { path = "../sync" } # provided by ebuild
 sys_util = { path = "../sys_util" } # provided by ebuild
 data_model = { path = "../data_model" } # provided by ebuild
-syscall_defines = { path = "../syscall_defines" } # provided by ebuild
 thiserror = "1.0.20"
 
 [dependencies.futures]
diff --git a/devices/Cargo.toml b/devices/Cargo.toml
index b1e78274f5..0a55dc99b5 100644
--- a/devices/Cargo.toml
+++ b/devices/Cargo.toml
@@ -47,7 +47,6 @@ serde = { version = "1", features = [ "derive" ] }
 smallvec = "1.6.1"
 sync = { path = "../sync" }
 sys_util = { path = "../sys_util" }
-syscall_defines = { path = "../syscall_defines" }
 thiserror = "1.0.20"
 tpm2 = { path = "../tpm2", optional = true }
 usb_util = { path = "../usb_util" }
diff --git a/io_uring/Cargo.toml b/io_uring/Cargo.toml
index b018e7a4c1..3b7cc7c366 100644
--- a/io_uring/Cargo.toml
+++ b/io_uring/Cargo.toml
@@ -7,7 +7,6 @@ edition = "2018"
 [dependencies]
 data_model = { path = "../data_model" } # provided by ebuild
 libc = "*"
-syscall_defines = { path = "../syscall_defines" } # provided by ebuild
 sync = { path = "../sync" } # provided by ebuild
 sys_util = { path = "../sys_util" } # provided by ebuild
 
diff --git a/io_uring/src/syscalls.rs b/io_uring/src/syscalls.rs
index e3c9f8630b..f3a3b41a05 100644
--- a/io_uring/src/syscalls.rs
+++ b/io_uring/src/syscalls.rs
@@ -6,8 +6,7 @@ use std::io::Error;
 use std::os::unix::io::RawFd;
 use std::ptr::null_mut;
 
-use libc::{c_int, c_long, c_void};
-use syscall_defines::linux::LinuxSyscall::*;
+use libc::{c_int, c_long, c_void, syscall, SYS_io_uring_enter, SYS_io_uring_setup};
 
 use crate::bindings::*;
 
@@ -15,7 +14,7 @@ use crate::bindings::*;
 pub type Result<T> = std::result::Result<T, c_int>;
 
 pub unsafe fn io_uring_setup(num_entries: usize, params: &io_uring_params) -> Result<RawFd> {
-    let ret = libc::syscall(
+    let ret = syscall(
         SYS_io_uring_setup as c_long,
         num_entries as c_int,
         params as *const _,
@@ -27,7 +26,7 @@ pub unsafe fn io_uring_setup(num_entries: usize, params: &io_uring_params) -> Re
 }
 
 pub unsafe fn io_uring_enter(fd: RawFd, to_submit: u64, to_wait: u64, flags: u32) -> Result<()> {
-    let ret = libc::syscall(
+    let ret = syscall(
         SYS_io_uring_enter as c_long,
         fd,
         to_submit as c_int,
diff --git a/run_tests b/run_tests
index aa705b5abb..95c92b8d0f 100755
--- a/run_tests
+++ b/run_tests
@@ -58,7 +58,6 @@ CRATE_REQUIREMENTS: Dict[str, List[Requirements]] = {
     "sync": [],
     "sys_util": [Requirements.SINGLE_THREADED, Requirements.PRIVILEGED],
     "poll_token_derive": [],
-    "syscall_defines": [],
     "tempfile": [],
     "tpm2-sys": [],
     "tpm2": [],
diff --git a/sys_util/Cargo.toml b/sys_util/Cargo.toml
index 158e56df1f..7edffd9f58 100644
--- a/sys_util/Cargo.toml
+++ b/sys_util/Cargo.toml
@@ -12,7 +12,6 @@ poll_token_derive = { version = "*", path = "poll_token_derive" }
 serde = { version = "1", features = [ "derive" ] }
 serde_json = "1"
 sync = { path = "../sync" } # provided by ebuild
-syscall_defines = { path = "../syscall_defines" } # provided by ebuild
 tempfile = { path = "../tempfile" } # provided by ebuild
 
 [target.'cfg(target_os = "android")'.dependencies]
diff --git a/sys_util/src/fork.rs b/sys_util/src/fork.rs
index a1e9b132d1..7f4a256402 100644
--- a/sys_util/src/fork.rs
+++ b/sys_util/src/fork.rs
@@ -8,8 +8,7 @@ use std::path::Path;
 use std::process;
 use std::result;
 
-use libc::{c_long, pid_t, syscall, CLONE_NEWPID, CLONE_NEWUSER, SIGCHLD};
-use syscall_defines::linux::LinuxSyscall::SYS_clone;
+use libc::{c_long, pid_t, syscall, SYS_clone, CLONE_NEWPID, CLONE_NEWUSER, SIGCHLD};
 
 use crate::errno_result;
 
diff --git a/sys_util/src/lib.rs b/sys_util/src/lib.rs
index d1bcf164b0..43bdcc4d19 100644
--- a/sys_util/src/lib.rs
+++ b/sys_util/src/lib.rs
@@ -101,13 +101,10 @@ use std::ptr;
 use std::time::Duration;
 
 use libc::{
-    c_int, c_long, fcntl, pipe2, syscall, sysconf, waitpid, F_GETFL, F_SETFL, O_CLOEXEC, SIGKILL,
-    WNOHANG, _SC_IOV_MAX, _SC_PAGESIZE,
+    c_int, c_long, fcntl, pipe2, syscall, sysconf, waitpid, SYS_getpid, SYS_gettid, F_GETFL,
+    F_SETFL, O_CLOEXEC, SIGKILL, WNOHANG, _SC_IOV_MAX, _SC_PAGESIZE,
 };
 
-use syscall_defines::linux::LinuxSyscall::SYS_getpid;
-use syscall_defines::linux::LinuxSyscall::SYS_gettid;
-
 /// Re-export libc types that are part of the API.
 pub type Pid = libc::pid_t;
 pub type Uid = libc::uid_t;
diff --git a/sys_util/src/shm.rs b/sys_util/src/shm.rs
index 0fdbf9f952..927734aef0 100644
--- a/sys_util/src/shm.rs
+++ b/sys_util/src/shm.rs
@@ -8,12 +8,11 @@ use std::io::{self, Read, Seek, SeekFrom, Write};
 use std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd};
 
 use libc::{
-    self, c_char, c_int, c_long, c_uint, close, fcntl, ftruncate64, off64_t, syscall, EINVAL,
-    F_ADD_SEALS, F_GET_SEALS, F_SEAL_GROW, F_SEAL_SEAL, F_SEAL_SHRINK, F_SEAL_WRITE,
-    MFD_ALLOW_SEALING,
+    self, c_char, c_int, c_long, c_uint, close, fcntl, ftruncate64, off64_t, syscall,
+    SYS_memfd_create, EINVAL, F_ADD_SEALS, F_GET_SEALS, F_SEAL_GROW, F_SEAL_SEAL, F_SEAL_SHRINK,
+    F_SEAL_WRITE, MFD_ALLOW_SEALING,
 };
 use serde::{Deserialize, Serialize};
-use syscall_defines::linux::LinuxSyscall::SYS_memfd_create;
 
 use crate::{errno, errno_result, Result};
 
diff --git a/vm_memory/Cargo.toml b/vm_memory/Cargo.toml
index a1f569d1bf..631ad9b841 100644
--- a/vm_memory/Cargo.toml
+++ b/vm_memory/Cargo.toml
@@ -10,7 +10,6 @@ cros_async = { path = "../cros_async" } # provided by ebuild
 data_model = { path = "../data_model" } # provided by ebuild
 libc = "*"
 base = { path = "../base" } # provided by ebuild
-syscall_defines = { path = "../syscall_defines" } # provided by ebuild
 bitflags = "1"
 
 [workspace]