diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6ed5dc6..3ad7f90 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 jobs:
   checks:
     name: Checks
-    runs-on: macos-10.15
+    runs-on: [macos-15, macos-14]
     steps:
       - uses: actions/checkout@v2
       - run: cargo check --examples --tests --all-targets
diff --git a/hv-sys/src/lib.rs b/hv-sys/src/lib.rs
index 03be98f..b1cfc2e 100644
--- a/hv-sys/src/lib.rs
+++ b/hv-sys/src/lib.rs
@@ -3,6 +3,5 @@
 #![allow(improper_ctypes)]
 // Comes from unit tests, don't care much
 #![allow(deref_nullptr)]
-#![allow(unaligned_references)]
 
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
diff --git a/hv/src/lib.rs b/hv/src/lib.rs
index 642f44a..8a7ca0e 100644
--- a/hv/src/lib.rs
+++ b/hv/src/lib.rs
@@ -26,10 +26,10 @@ pub type GPAddr = u64;
 
 bitflags::bitflags! {
     /// Guest physical memory region permissions.
-    pub struct Memory: u32 {
-        const READ = sys::HV_MEMORY_READ;
-        const WRITE = sys::HV_MEMORY_WRITE;
-        const EXEC = sys::HV_MEMORY_EXEC;
+    pub struct Memory: u64 {
+        const READ = 1 << 0;
+        const WRITE = 1 << 1;
+        const EXEC = 1 << 2;
     }
 }
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index fa98443..73cb934 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.53"
+channel = "stable"
 components = ["rustfmt", "clippy"]