diff --git a/src/agent.rs b/src/agent.rs
index 73e8106..b64f16d 100644
--- a/src/agent.rs
+++ b/src/agent.rs
@@ -1,11 +1,10 @@
 use anyhow::{bail, Result};
 use libc::{
-    c_char, c_void, close, execve, fcntl, fork, ftruncate, memfd_create, mmap, perror, syscall,
-    SYS_futex, FUTEX_WAIT, FUTEX_WAKE, F_ADD_SEALS, F_SEAL_FUTURE_WRITE, MAP_FAILED, MAP_SHARED,
-    MFD_ALLOW_SEALING, PROT_READ, PROT_WRITE,
+    c_char, c_void, close, execve, fork, ftruncate, memfd_create, mmap, perror, MAP_FAILED,
+    MAP_SHARED, PROT_READ, PROT_WRITE,
 };
 use shared_memory_heap::get_shared_mem_fd;
-use std::{arch::x86_64::_mm_mfence, ffi::CString, path::Path, ptr, usize};
+use std::{arch::x86_64::_mm_mfence, ffi::CString, path::Path, ptr};
 
 pub struct Agent {
     sync_mem: *mut usize,
@@ -16,7 +15,7 @@ unsafe impl Send for Agent {}
 impl Agent {
     pub(crate) unsafe fn new(agent_path: &Path, keyfile_path: &Path) -> Result<Self> {
         let data_fd = get_shared_mem_fd();
-        let sync_fd = memfd_create("sync\x00".as_ptr() as *const c_char, MFD_ALLOW_SEALING);
+        let sync_fd = memfd_create(r#"sync\0"#.as_ptr() as *const c_char, 0);
 
         if sync_fd <= 0 {
             bail!("creating memfd failed");
@@ -36,8 +35,6 @@ impl Agent {
             0,
         ) as *mut usize;
 
-        fcntl(sync_fd, F_ADD_SEALS, F_SEAL_FUTURE_WRITE);
-
         if sync_mem == MAP_FAILED as *mut usize {
             bail!("mmap failed");
         }