diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ee37c6..d234a8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 All notable changes to this project will be documented in this file.
 
+## [v1.63.1]
+- Updated allocator
+
 ## [v1.63.0]
 - Fixed bug when retrieving some finding values and injecting them as TOKENS in the rule templates
 - Improved Datadog rule
diff --git a/Cargo.toml b/Cargo.toml
index 71d9065..4eab59a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ publish = false
 
 [package]
 name = "kingfisher"
-version = "1.63.0"
+version = "1.63.1"
 description = "MongoDB's blazingly fast and accurate secret scanning and validation tool"
 edition.workspace = true
 rust-version.workspace = true
diff --git a/src/main.rs b/src/main.rs
index 99f0718..b52fcd3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,27 +5,27 @@
 //   * Fallback - system allocator     (`system-alloc` feature)
 // ────────────────────────────────────────────────────────────
 
-// // --- jemalloc (opt-in) ---
-// #[cfg(feature = "use-jemalloc")]
-// #[global_allocator]
-// static GLOBAL: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;
+// --- jemalloc (opt-in) ---
+#[cfg(feature = "use-jemalloc")]
+#[global_allocator]
+static GLOBAL: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;
 
-// // --- mimalloc (default) ---
-// #[cfg(all(not(feature = "use-jemalloc"), not(feature = "system-alloc")))]
-// #[global_allocator]
-// static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
-
-// // --- system allocator (explicit opt-out) ---
-// #[cfg(feature = "system-alloc")]
-// use std::alloc::System;
-// #[cfg(feature = "system-alloc")]
-// #[global_allocator]
-// static GLOBAL: System = System;
+// --- mimalloc (default) ---
+#[cfg(all(not(feature = "use-jemalloc"), not(feature = "system-alloc")))]
+#[global_allocator]
+static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
 
+// --- system allocator (explicit opt-out) ---
+#[cfg(feature = "system-alloc")]
 use std::alloc::System;
+#[cfg(feature = "system-alloc")]
 #[global_allocator]
 static GLOBAL: System = System;
 
+// use std::alloc::System;
+// #[global_allocator]
+// static GLOBAL: System = System;
+
 use std::{
     io::{IsTerminal, Read},
     sync::{Arc, Mutex},