diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1be6baa5..ebdba0fe 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -30,7 +30,7 @@ jobs:
     - uses: actions-rs/toolchain@v1
       with:
         profile: minimal
-        toolchain: nightly-2020-01-17
+        toolchain: nightly-2020-03-23
         components: rust-src, llvm-tools-preview
 
     - name: Cache QEMU
diff --git a/kernel/Cargo.lock b/kernel/Cargo.lock
index e2972615..09cd418a 100644
--- a/kernel/Cargo.lock
+++ b/kernel/Cargo.lock
@@ -107,9 +107,10 @@ dependencies = [
 
 [[package]]
 name = "buddy_system_allocator"
-version = "0.3.5"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "rustversion 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -348,7 +349,7 @@ dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitmap-allocator 0.1.0 (git+https://github.com/rcore-os/bitmap-allocator)",
  "bitvec 0.17.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "buddy_system_allocator 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "buddy_system_allocator 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)",
  "compression 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "device_tree 1.0.3 (git+https://github.com/rcore-os/device_tree-rs)",
@@ -496,6 +497,16 @@ dependencies = [
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rustversion"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "semver"
 version = "0.9.0"
@@ -717,7 +728,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 "checksum bitmap-allocator 0.1.0 (git+https://github.com/rcore-os/bitmap-allocator)" = "<none>"
 "checksum bitvec 0.17.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1fe4300c1d7a9ea6f3e3f39c10b39862bb79e1175c0572b6b49539a30e5562f5"
-"checksum buddy_system_allocator 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "59da15ef556589ee78370281d75b67f2d69ed26465ec0e0f3961e2021502426f"
+"checksum buddy_system_allocator 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "09072aa89a810228c822e132e4639ff17bab014ba5b2dce5270a6331ff1963ca"
 "checksum byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c3dd8985a7111efc5c80b44e23ecdd8c007de8ade3b96595387e812b957cf5"
 "checksum cast 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4b9434b9a5aa1450faa3f9cb14ea0e8c53bb5d2b3c1bfd1ab4fc03e9f33fbfb0"
 "checksum cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)" = "95e28fa049fda1c330bcf9d723be7663a899c4679724b34c81e9f5a326aab8cd"
@@ -758,6 +769,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum riscv 0.5.0 (git+https://github.com/rcore-os/riscv)" = "<none>"
 "checksum rlibc 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc874b127765f014d792f16763a81245ab80500e2ad921ed4ee9e82481ee08fe"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
+"checksum rustversion 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b3bba175698996010c4f6dce5e7f173b6eb781fce25d2cfc45e27091ce0b79f6"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum smoltcp 0.5.0 (git+https://github.com/rcore-os/smoltcp?rev=5bd87c7c)" = "<none>"
diff --git a/rust-toolchain b/rust-toolchain
index 17841400..d6c11b15 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1 +1 @@
-nightly-2020-01-17
+nightly-2020-03-23