diff --git a/Cargo.toml b/Cargo.toml
index cbf1cdb..e819e14 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,7 +41,6 @@ hyper = { version = "=1.6", features = ["http1", "http2", "server"] }
 hyper-util = { version = "=0.1", features = ["server-auto", "tokio"] }
 itertools = "0.14"
 log = "0.4"
-mimalloc = { version = "0.1.43", default-features = false, features = ["local_dynamic_tls"], optional = true }
 mime_guess = "=2.0"
 pem = "=3.0"
 percent-encoding = "=2.3"
@@ -52,7 +51,6 @@ pyo3-log = "=0.12"
 rustls-pemfile = "2.2"
 socket2 = { version = "=0.6", features = ["all"] }
 sysinfo = "=0.36"
-tikv-jemallocator = { version = "0.6.0", default-features = false, features = ["disable_initial_exec_tls"], optional = true }
 tls-listener = { version = "=0.11", features = ["rustls-ring"] }
 tokio = { version = "1.45", features = ["full"] }
 tokio-stream = "0.1"
@@ -62,10 +60,6 @@ tokio-util = { version = "0.7", features = ["codec", "rt"] }
 [build-dependencies]
 pyo3-build-config = "=0.25"
 
-[features]
-jemalloc = ["dep:tikv-jemallocator"]
-mimalloc = ["dep:mimalloc"]
-
 [profile.release]
 codegen-units = 1
 debug = false
diff --git a/src/lib.rs b/src/lib.rs
index a17a7e5..8ea1a4d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,11 +1,3 @@
-#[cfg(all(feature = "jemalloc", not(feature = "mimalloc")))]
-#[global_allocator]
-static GLOBAL: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;
-
-#[cfg(all(feature = "mimalloc", not(feature = "jemalloc")))]
-#[global_allocator]
-static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
-
 use pyo3::prelude::*;
 use std::sync::OnceLock;