diff --git a/Cargo.lock b/Cargo.lock
index 84ad8363..fdcc28a7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -22,28 +22,21 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "blog_os"
 version = "0.1.0"
 dependencies = [
- "bootloader 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bootloader 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "linked_list_allocator 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "pc-keyboard 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pic8259_simple 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "uart_16550 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "volatile 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "x86_64 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "x86_64 0.7.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "bootloader"
-version = "0.6.4"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "fixedvec 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "llvm-tools 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "usize_conversions 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "x86_64 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "xmas-elf 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "cast"
@@ -52,7 +45,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cc"
-version = "1.0.37"
+version = "1.0.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -60,17 +53,12 @@ name = "cpuio"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "fixedvec"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "lazy_static"
-version = "1.3.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -81,11 +69,6 @@ dependencies = [
  "spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "llvm-tools"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "nodrop"
 version = "0.1.13"
@@ -110,7 +93,7 @@ version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cc 1.0.37 (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)",
 ]
 
@@ -142,7 +125,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "spin"
-version = "0.5.0"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -154,11 +137,6 @@ dependencies = [
  "x86_64 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "usize_conversions"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "ux"
 version = "0.1.3"
@@ -184,7 +162,7 @@ dependencies = [
 
 [[package]]
 name = "x86_64"
-version = "0.7.4"
+version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "array-init 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -194,31 +172,16 @@ dependencies = [
  "ux 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "xmas-elf"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "zero 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "zero"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [metadata]
 "checksum array-init 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "23589ecb866b460d3a0f1278834750268c607e8e28a1b982c907219f3178cd72"
 "checksum bit_field 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ed8765909f9009617974ab6b7d332625b320b33c326b1e9321382ef1999b5d56"
 "checksum bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d155346769a6855b86399e9bc3814ab343cd3d62c7e985113d46a0ec3c281fd"
-"checksum bootloader 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b15e5b7b9d9a8e427cf4270894f51ce288632a3a1a2cc6f8fda669d5446f98bd"
+"checksum bootloader 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4b78932cf3ce7b890897030610423f66733091f092b03bc8de0fcb6c9f93b274"
 "checksum cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "926013f2860c46252efceabb19f4a6b308197505082c609025aa6706c011d427"
-"checksum cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)" = "39f75544d7bbaf57560d2168f28fd649ff9c76153874db88bdbdfd839b1a7e7d"
+"checksum cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)" = "4fc9a35e1f4290eb9e5fc54ba6cf40671ed2a2514c3eeb2b2a908dda2ea5a1be"
 "checksum cpuio 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "22b8e308ccfc5acf3b82f79c0eac444cf6114cb2ac67a230ca6c177210068daa"
-"checksum fixedvec 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b395ef2adf62bdeefcd1b59ad0dd2225c6c333ec79656ea79ac5285c46d051ea"
-"checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
+"checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 "checksum linked_list_allocator 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "47314ec1d29aa869ee7cb5a5be57be9b1055c56567d59c3fb6689926743e0bea"
-"checksum llvm-tools 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "955be5d0ca0465caf127165acb47964f911e2bc26073e865deb8be7189302faf"
 "checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
 "checksum pc-keyboard 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fff50ab09ba31bcebc0669f4e64c0952fae1acdca9e6e0587e68e4e8443808ac"
 "checksum pic8259_simple 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dc64b2fd10828da8521b6cdabe0679385d7d2a3a6d4c336b819d1fa31ba35c72"
@@ -227,12 +190,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "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 spin 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ceac490aa12c567115b40b7b7fceca03a6c9d53d5defea066123debc83c5dc1f"
-"checksum spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "44363f6f51401c34e7be73db0db371c04705d35efbe9f7d6082e03a921a32c55"
+"checksum spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 "checksum uart_16550 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5b9392f60931fe3bf8f24e0a15ee4f51528770f1d64c48768ab66571334d95b0"
-"checksum usize_conversions 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f70329e2cbe45d6c97a5112daad40c34cd9a4e18edb5a2a18fefeb584d8d25e5"
 "checksum ux 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "88dfeb711b61ce620c0cb6fd9f8e3e678622f0c971da2a63c4b3e25e88ed012f"
 "checksum volatile 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "6af0edf5b4faacc31fc51159244d78d65ec580f021afcef7bd53c04aeabc7f29"
 "checksum x86_64 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "bb8f09c32a991cc758ebcb9b7984f530095d32578a4e7b85db6ee1f0bbe4c9c6"
-"checksum x86_64 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "1ad37c1665071808d64e65f7cdae32afcdc90fd7ae7fa402bbda36b824f1add6"
-"checksum xmas-elf 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "22678df5df766e8d1e5d609da69f0c3132d794edf6ab5e75e7abcd2270d4cf58"
-"checksum zero 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5f1bc8a6b2005884962297587045002d8cfb8dcec9db332f4ca216ddc5de82c5"
+"checksum x86_64 0.7.5 (registry+https://github.com/rust-lang/crates.io-index)" = "997837f3913aac8f67164683258756d712376849906c8d609f844084bc03ef84"
diff --git a/Cargo.toml b/Cargo.toml
index 678370fb..25abc606 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ name = "stack_overflow"
 harness = false
 
 [dependencies]
-bootloader = { version = "0.6.4", features = ["map_physical_memory"]}
+bootloader = { version = "0.8.0", features = ["map_physical_memory"]}
 volatile = "0.2.3"
 spin = "0.4.9"
 x86_64 = "0.7.0"