diff --git a/kernel/Cargo.lock b/kernel/Cargo.lock
index 4d7dd53..c1bbe8f 100644
--- a/kernel/Cargo.lock
+++ b/kernel/Cargo.lock
@@ -96,6 +96,14 @@ dependencies = [
  "xmas-elf 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "buddy_system_allocator"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "byteorder"
 version = "1.3.1"
@@ -103,7 +111,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cc"
-version = "1.0.30"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -190,14 +198,6 @@ name = "libc"
 version = "0.2.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "linked_list_allocator"
-version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "spin 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "log"
 version = "0.3.9"
@@ -278,7 +278,7 @@ version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -294,12 +294,12 @@ dependencies = [
  "bit_field 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "bootloader 0.3.14 (git+https://github.com/rcore-os/bootloader)",
- "cc 1.0.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "buddy_system_allocator 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)",
  "console-traits 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "device_tree 1.0.3 (git+https://github.com/rcore-os/device_tree-rs)",
  "heapless 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "linked_list_allocator 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "once 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "pc-keyboard 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -579,8 +579,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 "checksum bitvec 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cfadef5c4e2c2e64067b9ecc061179f12ac7ec65ba613b1f60f3972bbada1f5b"
 "checksum bootloader 0.3.14 (git+https://github.com/rcore-os/bootloader)" = "<none>"
+"checksum buddy_system_allocator 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2ed828f1e227d6e32b998d6375b67fd63ac5389d50b23f258ce151d22b6cc595"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
-"checksum cc 1.0.30 (registry+https://github.com/rust-lang/crates.io-index)" = "d01c69d08ff207f231f07196e30f84c70f1c815b04f980f8b7b01ff01f05eb92"
+"checksum cc 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)" = "c9ce8bb087aacff865633f0bd5aeaed910fe2fe55b55f4739527f2e023a2e53d"
 "checksum cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "11d43355396e872eefb45ce6342e4374ed7bc2b3a502d1b28e36d6e23c05d1f4"
 "checksum console-traits 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f711b3d1d5c3f7ae7d6428901c0f3e5d5f5c800fcfac86bf0252e96373a2cec6"
 "checksum deque 0.3.2 (git+https://github.com/wangrunji0408/deque.git?branch=no_std)" = "<none>"
@@ -594,7 +595,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum heapless 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "56b960caff1a46f1fb3c1eb05f0575ac21c6248364ebebde11b11116e099881c"
 "checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)" = "aab692d7759f5cd8c859e169db98ae5b52c924add2af5fbbca11d12fefb567c1"
-"checksum linked_list_allocator 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "655d57c71827fe0891ce72231b6aa5e14033dae3f604609e6a6f807267c1678d"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum managed 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fdcec5e97041c7f0f1c5b7d93f12e57293c831c646f4cc7a5db59460c7ea8de6"
diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index f77d0e7..99d0a45 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -47,7 +47,7 @@ bit_field = "0.9"
 volatile = "0.2"
 heapless = "0.4"
 console-traits = "0.3"
-linked_list_allocator = "0.6"
+buddy_system_allocator = "0.1"
 device_tree = { git = "https://github.com/rcore-os/device_tree-rs" }
 lazy_static = { version = "1.3", features = ["spin_no_std"] }
 smoltcp = { version = "0.5.0", default-features = false, features = ["alloc", "log", "proto-ipv4", "proto-igmp", "socket-icmp", "socket-udp", "socket-tcp", "socket-raw"] }
diff --git a/kernel/src/lib.rs b/kernel/src/lib.rs
index f64e22c..4a2487d 100644
--- a/kernel/src/lib.rs
+++ b/kernel/src/lib.rs
@@ -18,7 +18,7 @@ extern crate lazy_static;
 
 pub use crate::process::{processor, new_kernel_context};
 use rcore_thread::std_thread as thread;
-use linked_list_allocator::LockedHeap;
+use buddy_system_allocator::LockedHeap;
 
 #[macro_use]    // print!
 mod logging;
diff --git a/kernel/src/memory.rs b/kernel/src/memory.rs
index a133c0e..61229af 100644
--- a/kernel/src/memory.rs
+++ b/kernel/src/memory.rs
@@ -8,7 +8,7 @@ use crate::process::{process};
 use crate::sync::SpinNoIrqLock;
 use lazy_static::*;
 use log::*;
-use linked_list_allocator::LockedHeap;
+use buddy_system_allocator::LockedHeap;
 
 #[cfg(not(feature = "no_mmu"))]
 pub type MemorySet = rcore_memory::memory_set::MemorySet<InactivePageTable0>;