diff --git a/Cargo.lock b/Cargo.lock
index ce392fa..6c712c1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -7,12 +7,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "bitflags"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cc"
-version = "1.0.45"
+version = "1.0.52"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -28,10 +28,10 @@ dependencies = [
 name = "kernel"
 version = "0.1.54"
 dependencies = [
- "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "goblin 0.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "linked_list_allocator 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "raw-cpuid 4.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "linked_list_allocator 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "raw-cpuid 8.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56",
  "rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab_allocator 0.3.1",
@@ -41,7 +41,7 @@ dependencies = [
 
 [[package]]
 name = "linked_list_allocator"
-version = "0.6.4"
+version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -52,41 +52,23 @@ name = "plain"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "proc-macro2"
-version = "1.0.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "quote"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "raw-cpuid"
-version = "4.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "raw-cpuid"
 version = "7.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "raw-cpuid"
+version = "8.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -94,7 +76,7 @@ dependencies = [
 name = "redox_syscall"
 version = "0.1.56"
 dependencies = [
- "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -131,26 +113,11 @@ name = "semver-parser"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "serde"
-version = "1.0.101"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "serde_derive"
-version = "1.0.101"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "slab_allocator"
 version = "0.3.1"
 dependencies = [
- "linked_list_allocator 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "linked_list_allocator 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -164,51 +131,30 @@ name = "spin"
 version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "syn"
-version = "1.0.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "unicode-xid"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "x86"
 version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bit_field 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "raw-cpuid 7.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [metadata]
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-"checksum bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8a606a02debe2813760609f57a64a2ffd27d9fdf5b2f133eaca0b248dd92cdd2"
-"checksum cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)" = "4fc9a35e1f4290eb9e5fc54ba6cf40671ed2a2514c3eeb2b2a908dda2ea5a1be"
+"checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+"checksum cc 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)" = "c3d87b23d6a92cd03af510a5ade527033f6aa6fa92161e2d5863a907d4c5e31d"
 "checksum goblin 0.0.21 (registry+https://github.com/rust-lang/crates.io-index)" = "6a4013e9182f2345c6b7829b9ef6e670bce0dfca12c6f974457ed2160c2c7fe9"
-"checksum linked_list_allocator 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "47314ec1d29aa869ee7cb5a5be57be9b1055c56567d59c3fb6689926743e0bea"
+"checksum linked_list_allocator 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)" = "47de1a43fad0250ee197e9e124e5b5deab3d7b39d4428ae8a6d741ceb340c362"
 "checksum plain 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
-"checksum proc-macro2 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "90cf5f418035b98e655e9cdb225047638296b862b42411c4e45bb88d700f7fc0"
-"checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
-"checksum raw-cpuid 4.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "90e0d3209fac374e168cef2d8806dde7b31ef0ee82a965bcc0bec562c078a6f5"
 "checksum raw-cpuid 7.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b4a349ca83373cfa5d6dbb66fd76e58b2cca08da71a5f6400de0a0a6a9bceeaf"
+"checksum raw-cpuid 8.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9e9c0f2091b865a94bc3c9d34896cc4bbda04453453c391f7eb224491be9ae1d"
 "checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum scroll 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2f84d114ef17fd144153d608fba7c446b0145d038985e7a8cc5d08bb0ce20383"
 "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 serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "9796c9b7ba2ffe7a9ce53c2287dfc48080f4b2b362fcc245a259b3a7201119dd"
-"checksum serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "4b133a43a1ecd55d4086bd5b4dc6c1751c68b1bfbeba7a5040442022c7e7c02e"
 "checksum spin 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ceac490aa12c567115b40b7b7fceca03a6c9d53d5defea066123debc83c5dc1f"
 "checksum spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
-"checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
-"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
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diff --git a/Cargo.toml b/Cargo.toml
index 56c27a8..2997002 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ crate-type = ["staticlib"]
 [dependencies]
 bitflags = "1.0.3"
 linked_list_allocator = "0.6.2"
-raw-cpuid = "4.0.0"
+raw-cpuid = "8.0.0"
 redox_syscall = { path = "syscall" }
 slab_allocator = { path = "slab_allocator", optional = true }
 spin = "0.4.8"