diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7d550305..db062403 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,8 +8,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Apache NuttX support ([#861])
 
+### Fixed
+- Deprecation warning for `libc::INT_MAX` [#868]
+
 [0.4.4]: https://github.com/rust-random/getrandom/compare/v0.4.3...master
 [#861]: https://github.com/rust-random/getrandom/pull/861
+[#868]: https://github.com/rust-random/getrandom/pull/868
 
 ## [0.4.3] - 2026-06-17
 ### Added
diff --git a/src/backends/use_file.rs b/src/backends/use_file.rs
index a1d372a0..b5562532 100644
--- a/src/backends/use_file.rs
+++ b/src/backends/use_file.rs
@@ -161,7 +161,7 @@ mod sync {
     /// Wake up all threads which wait for value of atomic `FD` to change.
     pub(super) fn wake() {
         let op = libc::FUTEX_WAKE | libc::FUTEX_PRIVATE_FLAG;
-        let ret = unsafe { libc::syscall(libc::SYS_futex, &FD, op, libc::INT_MAX) };
+        let ret = unsafe { libc::syscall(libc::SYS_futex, &FD, op, libc::c_int::MAX) };
         debug_assert!(ret >= 0);
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index ecec9002..b2afd95f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -10,6 +10,7 @@
 #![doc = include_str!("../README.md")]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 #![cfg_attr(getrandom_backend = "efi_rng", feature(uefi_std))]
+#![cfg_attr(getrandom_backend = "extern_impl", allow(incomplete_features))]
 #![cfg_attr(getrandom_backend = "extern_impl", feature(extern_item_impls))]
 
 #[macro_use]