diff --git a/Cargo.lock b/Cargo.lock
index f925fcf..ec5415f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -503,7 +503,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "edcdbedc2236483ab103a53415653d6b4442ea6141baf1ffa85df29635e88436"
 dependencies = [
- "nix 0.27.1",
+ "nix",
  "rand",
 ]
 
@@ -2082,17 +2082,6 @@ dependencies = [
  "tempfile",
 ]
 
-[[package]]
-name = "nix"
-version = "0.26.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "598beaf3cc6fdd9a5dfb1630c2800c7acd31df7aaf0f565796fba2b53ca1af1b"
-dependencies = [
- "bitflags 1.3.2",
- "cfg-if 1.0.0",
- "libc",
-]
-
 [[package]]
 name = "nix"
 version = "0.27.1"
@@ -3067,7 +3056,7 @@ dependencies = [
  "itertools",
  "lazy_static",
  "migration",
- "nix 0.26.4",
+ "nix",
  "num_cpus",
  "once_cell",
  "proctitle",
diff --git a/Cargo.toml b/Cargo.toml
index 043c477..8f57e2e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -63,7 +63,7 @@ envy = "0.4.2"
 heck = { version = "0.4.1", features = ["unicode"] }
 itertools = "0.12.1"
 lazy_static = "1.4.0"
-nix = { version = "0.26.4", default-features = false, features = ["dir", "process", "user"] }
+nix = { version = "0.27.1", default-features = false, features = ["dir", "process", "user"] }
 num_cpus = "1.16.0"
 once_cell = { version = "1.19.0", features = ["parking_lot"] }
 proctitle = "0.1.1"
diff --git a/src/daemon.rs b/src/daemon.rs
index 4229cd2..f074ed0 100644
--- a/src/daemon.rs
+++ b/src/daemon.rs
@@ -90,7 +90,7 @@ pub(crate) fn open_pid_file(env: &EnvVars) -> Result<File> {
         .map_err(|e| Error::new(e).context("PID file is locked (process already running?)"))?;
 
     // Erase and write new PID
-    ftruncate(pid_file.as_raw_fd(), 0)?;
+    ftruncate(&pid_file, 0)?;
     pid_file
         .write_all(getpid().to_string().as_bytes())
         .map_err(|e| Error::new(e).context("Failed to write to PID file"))?;
diff --git a/src/main.rs b/src/main.rs
index fbfbd33..1067885 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -12,7 +12,7 @@
  * work.  If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
  */
 
-use std::{fs::File, net::SocketAddr, os::fd::AsRawFd};
+use std::{fs::File, net::SocketAddr};
 
 use anyhow::Result;
 use axum::Server;
@@ -100,7 +100,7 @@ async fn shutdown_signal(pid_file: &mut File) {
     error!("signal received, starting graceful shutdown");
 
     // Clear PID file
-    let _ = ftruncate(pid_file.as_raw_fd(), 0);
+    let _ = ftruncate(pid_file, 0);
 }
 
 // We must fork before we do anything else.
@@ -142,7 +142,7 @@ async fn tokio_main(env: &EnvVars, pid_file: &mut File) -> Result<()> {
     server.await?;
 
     // FIXME - do we actually get here?
-    let _ = ftruncate(pid_file.as_raw_fd(), 0);
+    let _ = ftruncate(pid_file, 0);
 
     Ok(())
 }