diff --git a/Cargo.toml b/Cargo.toml
index 61e58ce..5291a63 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -205,10 +205,10 @@ version = "1.1.1"
 optional = true
 
 [target."cfg(unix)".dev-dependencies.libc]
-version = "0.2.145"
+version = "0.2.149"
 
 [target."cfg(unix)".dev-dependencies.nix]
-version = "0.26"
+version = "0.28.0"
 features = [
     "fs",
     "socket",
diff --git a/tests/io_async_fd.rs b/tests/io_async_fd.rs
index 7abd592..aca2546 100644
--- a/tests/io_async_fd.rs
+++ b/tests/io_async_fd.rs
@@ -13,7 +13,7 @@ use std::{
     task::{Context, Waker},
 };
 
-use nix::unistd::{close, read, write};
+use nix::unistd::{read, write};
 
 use futures::poll;
 
@@ -57,18 +57,18 @@ impl TestWaker {
 
 #[derive(Debug)]
 struct FileDescriptor {
-    fd: RawFd,
+    fd: std::os::fd::OwnedFd,
 }
 
 impl AsRawFd for FileDescriptor {
     fn as_raw_fd(&self) -> RawFd {
-        self.fd
+        self.fd.as_raw_fd()
     }
 }
 
 impl Read for &FileDescriptor {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
-        read(self.fd, buf).map_err(io::Error::from)
+        read(self.fd.as_raw_fd(), buf).map_err(io::Error::from)
     }
 }
 
@@ -80,7 +80,7 @@ impl Read for FileDescriptor {
 
 impl Write for &FileDescriptor {
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        write(self.fd, buf).map_err(io::Error::from)
+        write(&self.fd, buf).map_err(io::Error::from)
     }
 
     fn flush(&mut self) -> io::Result<()> {
@@ -98,12 +98,6 @@ impl Write for FileDescriptor {
     }
 }
 
-impl Drop for FileDescriptor {
-    fn drop(&mut self) {
-        let _ = close(self.fd);
-    }
-}
-
 fn set_nonblocking(fd: RawFd) {
     use nix::fcntl::{OFlag, F_GETFL, F_SETFL};
 
@@ -134,8 +128,8 @@ fn socketpair() -> (FileDescriptor, FileDescriptor) {
     .expect("socketpair");
     let fds = (FileDescriptor { fd: fd_a }, FileDescriptor { fd: fd_b });
 
-    set_nonblocking(fds.0.fd);
-    set_nonblocking(fds.1.fd);
+    set_nonblocking(fds.0.fd.as_raw_fd());
+    set_nonblocking(fds.1.fd.as_raw_fd());
 
     fds
 }