diff --git a/Cargo.toml b/Cargo.toml
index a704177..5557037 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,6 +13,7 @@ name = "libipld"
 crate-type = ["rlib", "cdylib"]
 
 [dependencies]
+mimalloc = { version = "*" }
 pyo3 = { version = "0.27.1", features = ["generate-import-lib", "anyhow"] }
 python3-dll-a = "0.2.14"
 anyhow = "1.0.100"
diff --git a/src/lib.rs b/src/lib.rs
index 0434a64..bcb4e48 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,8 @@
+use mimalloc::MiMalloc;
+
+#[global_allocator]
+static GLOBAL: MiMalloc = MiMalloc;
+
 use std::io::{self, Cursor, Write};
 
 use anyhow::{anyhow, Result};