diff --git a/Cargo.lock b/Cargo.lock
index 3c04ce0..47af284 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1781,9 +1781,9 @@ dependencies = [
 
 [[package]]
 name = "vec64"
-version = "0.5.2"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54db55dbf75205d7a52f11a60aa6742d0ce6a9eb3ed97346556f26aec246f139"
+checksum = "662d4c3c6fe8d14a8b4a0b97155a0b22dd6d9b6626f42224be6987b0e0f1ca2b"
 dependencies = [
  "libc",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 6baf246..af66167 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -47,7 +47,7 @@ ahash = { version = "0.8.12", optional = true }
 hashbrown = { version = "0.15", optional = true }
 parking_lot = { version = "0.12", optional = true }
 regex = { version = "1.12.3", optional = true }
-vec64 = { version = "0.5.2" }
+vec64 = { version = "0.5.3" }
 log = { version = "0.4.29", optional = true }
 
 [dev-dependencies]
diff --git a/src/lib.rs b/src/lib.rs
index 6be6327..bd22391 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -118,7 +118,7 @@
 //!
 //! _Construction time for Vec<i64> (87 ns) and Vec64<i64> (84 ns) excluded from benchmarks._
 
-#![feature(allocator_api)]
+#![feature(allocator_ext)]
 #![feature(portable_simd)]
 
 pub use ::vec64::{Vec64, Vec64Alloc, vec64};