diff --git a/Cargo.lock b/Cargo.lock
index 02c2a63..f27e78d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -22,9 +22,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "cortex-a"
-version = "6.1.0"
+version = "7.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
+checksum = "b27f5d071b671f9799dfdf0c0afcec11de65195383d36e186639c83b00705e4f"
 dependencies = [
  "tock-registers",
 ]
@@ -55,9 +55,9 @@ dependencies = [
 
 [[package]]
 name = "qemu-exit"
-version = "2.0.1"
+version = "3.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "220eb94f40665452ab6114bf8a8d86aa1fd41c6dbfaa4ab71b5912c8adb80389"
+checksum = "0e0fa04276d522a40ed717bf874183a3b2a8bbb3fb4c646b03a7eb874ce5d543"
 
 [[package]]
 name = "quote"
diff --git a/nucleus/Cargo.toml b/nucleus/Cargo.toml
index 34e33da..9b9b24c 100644
--- a/nucleus/Cargo.toml
+++ b/nucleus/Cargo.toml
@@ -25,8 +25,8 @@ qemu = ["qemu-exit"]
 
 [dependencies]
 r0 = "1.0"
-qemu-exit = { version = "2.0", optional = true }
-cortex-a = "6.1"
+qemu-exit = { version = "3.0", optional = true }
+cortex-a = "7.0"
 tock-registers = "0.7"
 ux = { version = "0.1.3", default-features = false }
 usize_conversions = "0.2.0"
diff --git a/nucleus/src/arch/aarch64/boot.rs b/nucleus/src/arch/aarch64/boot.rs
index 7af95ed..7d61e06 100644
--- a/nucleus/src/arch/aarch64/boot.rs
+++ b/nucleus/src/arch/aarch64/boot.rs
@@ -66,7 +66,7 @@ unsafe fn reset() -> ! {
 // #[inline]
 // fn enable_armv6_unaligned_access() {
 //     unsafe {
-//         asm!(
+//         core::arch::asm!(
 //             "mrc p15, 0, {u}, c1, c0, 0",
 //             "or {u}, {u}, {CR_U}",
 //             "mcr p15, 0, {u}, c1, c0, 0",
diff --git a/nucleus/src/arch/aarch64/traps.rs b/nucleus/src/arch/aarch64/traps.rs
index 330128f..fc73c90 100644
--- a/nucleus/src/arch/aarch64/traps.rs
+++ b/nucleus/src/arch/aarch64/traps.rs
@@ -62,7 +62,7 @@ use {
     },
 };
 
-global_asm!(include_str!("vectors.S"));
+core::arch::global_asm!(include_str!("vectors.S"));
 
 /// Errors possibly returned from the traps module.
 #[derive(Debug, Snafu)]
diff --git a/nucleus/src/main.rs b/nucleus/src/main.rs
index 57d396b..951808c 100644
--- a/nucleus/src/main.rs
+++ b/nucleus/src/main.rs
@@ -9,8 +9,6 @@
 
 #![no_std]
 #![no_main]
-#![feature(asm)]
-#![feature(global_asm)]
 #![feature(decl_macro)]
 #![feature(allocator_api)]
 #![feature(ptr_internals)]
diff --git a/nucleus/src/qemu.rs b/nucleus/src/qemu.rs
index 571c19a..4160433 100644
--- a/nucleus/src/qemu.rs
+++ b/nucleus/src/qemu.rs
@@ -27,7 +27,7 @@ pub mod semihosting {
         // SAFETY: text must be \0-terminated!
         let cmd = 0x04;
         unsafe {
-            asm!(
+            core::arch::asm!(
                 "hlt #0xF000"
                 , in("w0") cmd
                 , in("x1") text.as_ptr() as u64