diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c404aba..7973658 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -99,7 +99,7 @@ jobs:
         os: [ubuntu-latest, windows-latest]
         # When updating this, the reminder to update the minimum supported
         # Rust version in Cargo.toml.
-        rust: ['1.63']
+        rust: ['1.70']
     steps:
       - uses: actions/checkout@v4
       - name: Install Rust
diff --git a/Cargo.toml b/Cargo.toml
index 6e61ef6..362d00c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ name = "async-process"
 version = "2.4.0"
 authors = ["Stjepan Glavina <stjepang@gmail.com>"]
 edition = "2021"
-rust-version = "1.63"
+rust-version = "1.70"
 description = "Async interface for working with processes"
 license = "Apache-2.0 OR MIT"
 repository = "https://github.com/smol-rs/async-process"
@@ -15,7 +15,6 @@ categories = ["asynchronous", "os"]
 exclude = ["/.*"]
 
 [dependencies]
-async-lock = "3.0.0"
 async-io = "2.3.0"
 cfg-if = "1.0"
 event-listener = "5.1.0"
@@ -23,6 +22,7 @@ futures-lite = "2.0.0"
 tracing = { version = "0.1.40", default-features = false, optional = true }
 
 [target.'cfg(unix)'.dependencies]
+async-lock = "3.0.0"
 async-signal = "0.2.3"
 rustix = { version = "1.0", default-features = false, features = ["std", "fs", "process"] }
 
diff --git a/src/lib.rs b/src/lib.rs
index 6d5af70..d1b2fd7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -62,7 +62,7 @@ use std::fmt;
 use std::path::Path;
 use std::pin::Pin;
 use std::sync::atomic::{AtomicUsize, Ordering};
-use std::sync::{Arc, Mutex};
+use std::sync::{Arc, Mutex, OnceLock};
 use std::task::{Context, Poll};
 use std::thread;
 
@@ -74,7 +74,6 @@ use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, OwnedFd, RawFd};
 #[cfg(windows)]
 use blocking::Unblock;
 
-use async_lock::OnceCell;
 use futures_lite::{future, io, prelude::*};
 
 #[doc(no_inline)]
@@ -117,9 +116,9 @@ struct Reaper {
 impl Reaper {
     /// Get the singleton instance of the reaper.
     fn get() -> &'static Self {
-        static REAPER: OnceCell<Reaper> = OnceCell::new();
+        static REAPER: OnceLock<Reaper> = OnceLock::new();
 
-        REAPER.get_or_init_blocking(|| Reaper {
+        REAPER.get_or_init(|| Reaper {
             sys: reaper::Reaper::new(),
             drivers: AtomicUsize::new(0),
             child_count: AtomicUsize::new(0),