diff --git a/Cargo.lock b/Cargo.lock
index b0ac402..78c49c0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -87,7 +87,6 @@ dependencies = [
  "blkpath",
  "clap",
  "libc",
- "once_cell",
  "sudo",
  "tempfile",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 01f6504..98fe60b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,6 @@ path = "src/bin/blkreader.rs"
 blkpath = "0.1"
 blkmap = "0.1"
 libc = "0.2"
-once_cell = "1.19"
 clap = { version = "4.5", features = ["derive"] }
 sudo = "0.6"
 
diff --git a/src/cache.rs b/src/cache.rs
index da0c6a0..3d7eea3 100644
--- a/src/cache.rs
+++ b/src/cache.rs
@@ -6,13 +6,12 @@
 //! to the underlying block device.
 
 use blkpath::ResolveDevice;
-use once_cell::sync::Lazy;
 use std::collections::HashMap;
 use std::fs::{File, OpenOptions};
 use std::io;
 use std::os::unix::fs::{MetadataExt, OpenOptionsExt};
 use std::path::PathBuf;
-use std::sync::{Arc, RwLock};
+use std::sync::{Arc, LazyLock, RwLock};
 
 /// A cached block device entry containing the path and file handle.
 #[derive(Debug)]
@@ -39,8 +38,8 @@ impl CachedDevice {
 /// The cache is keyed by the device ID (from `stat.st_dev`), which
 /// uniquely identifies a filesystem. All files on the same filesystem
 /// share the same underlying block device.
-static DEVICE_CACHE: Lazy<RwLock<HashMap<u64, Arc<CachedDevice>>>> =
-    Lazy::new(|| RwLock::new(HashMap::new()));
+static DEVICE_CACHE: LazyLock<RwLock<HashMap<u64, Arc<CachedDevice>>>> =
+    LazyLock::new(|| RwLock::new(HashMap::new()));
 
 /// Get or create a cached block device entry for the given file.
 ///