diff --git a/.github/scripts/ci-setup-x86_64-apple-darwin.sh b/.github/scripts/ci-setup-aarch64-apple-darwin.sh
similarity index 100%
rename from .github/scripts/ci-setup-x86_64-apple-darwin.sh
rename to .github/scripts/ci-setup-aarch64-apple-darwin.sh
diff --git a/.github/scripts/ci-style.sh b/.github/scripts/ci-style.sh
index 0482321b52..4c71edf6d5 100755
--- a/.github/scripts/ci-style.sh
+++ b/.github/scripts/ci-style.sh
@@ -13,10 +13,6 @@ if [[ $CLIPPY_VERSION == "clippy 0.1.72"* ]]; then
     export CARGO_INCREMENTAL=0
 fi
 
-if [[ $CLIPPY_VERSION == "clippy 0.1.77"* && $CARGO_BUILD_TARGET == "x86_64-apple-darwin" ]]; then
-    export SKIP_CLIPPY=1
-fi
-
 # --- Check main crate ---
 
 if [[ $SKIP_CLIPPY == 1 ]]; then
diff --git a/.github/workflows/merge-check.yml b/.github/workflows/merge-check.yml
index 8dd53785e9..be33f7bfff 100644
--- a/.github/workflows/merge-check.yml
+++ b/.github/workflows/merge-check.yml
@@ -22,10 +22,10 @@ env:
       "check-api-migration-update",
       "minimal-tests-core/x86_64-unknown-linux-gnu/stable",
       "minimal-tests-core/i686-unknown-linux-gnu/stable",
-      "minimal-tests-core/x86_64-apple-darwin/stable",
+      "minimal-tests-core/aarch64-apple-darwin/stable",
       "style-check/x86_64-unknown-linux-gnu/stable",
       "style-check/i686-unknown-linux-gnu/stable",
-      "style-check/x86_64-apple-darwin/stable",
+      "style-check/aarch64-apple-darwin/stable",
       "extended-tests-openjdk / test",
       "extended-tests-v8",
       "extended-tests-jikesrvm",
diff --git a/.github/workflows/minimal-tests-core.yml b/.github/workflows/minimal-tests-core.yml
index 2a113ca850..cf453d5196 100644
--- a/.github/workflows/minimal-tests-core.yml
+++ b/.github/workflows/minimal-tests-core.yml
@@ -36,7 +36,7 @@ jobs:
         target:
           - { os: ubuntu-22.04, triple: x86_64-unknown-linux-gnu }
           - { os: ubuntu-22.04, triple: i686-unknown-linux-gnu }
-          - { os: macos-15, triple: x86_64-apple-darwin }
+          - { os: macos-15, triple: aarch64-apple-darwin }
         rust: ${{ fromJson(needs.setup-test-matrix.outputs.rust )}}
 
     name: minimal-tests-core/${{ matrix.target.triple }}/${{ matrix.rust }}
@@ -87,7 +87,7 @@ jobs:
         target:
           - { os: ubuntu-22.04, triple: x86_64-unknown-linux-gnu }
           - { os: ubuntu-22.04, triple: i686-unknown-linux-gnu }
-          - { os: macos-15, triple: x86_64-apple-darwin }
+          - { os: macos-15, triple: aarch64-apple-darwin }
         rust: ${{ fromJson(needs.setup-test-matrix.outputs.rust )}}
 
     name: style-check/${{ matrix.target.triple }}/${{ matrix.rust }}
diff --git a/Cargo.toml b/Cargo.toml
index f96df1ec29..cd4df3b9c3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,9 +35,9 @@ itertools = "0.14.0"
 jemalloc-sys = { version = "0.5.3", features = ["disable_initial_exec_tls"], optional = true }
 lazy_static = "1.1"
 libc = "0.2"
+libmimalloc-sys = { version = "0.1.43", features = ["extended"], optional = true }
 log = { version = "0.4", features = ["max_level_trace", "release_max_level_off"] }
 memoffset = "0.9"
-mimalloc-sys = { version = "0.1.6", optional = true }
 # MMTk macros - we have to specify a version here in order to publish the crate, even though we use the dependency from a local path.
 mmtk-macros = { version="0.31.0", path = "macros/" }
 num_cpus = "1.8"
@@ -238,7 +238,7 @@ vo_bit_access = []
 # Group:malloc
 # only one of the following features should be enabled, or none to use the default malloc from libc
 # this does not replace the global Rust allocator, but provides these libraries for GC implementation
-malloc_mimalloc = ["dep:mimalloc-sys"]
+malloc_mimalloc = ["dep:libmimalloc-sys"]
 malloc_jemalloc = ["dep:jemalloc-sys"]
 
 # Use the native mimalloc allocator for malloc. This is not tested by me (Yi) yet, and it is only used to make sure that some code
diff --git a/src/util/malloc/library.rs b/src/util/malloc/library.rs
index 2177a06144..7796eb9f30 100644
--- a/src/util/malloc/library.rs
+++ b/src/util/malloc/library.rs
@@ -33,13 +33,13 @@ mod mimalloc {
     // Normal 4K page accounting
     pub const LOG_BYTES_IN_MALLOC_PAGE: u8 = crate::util::constants::LOG_BYTES_IN_PAGE;
     // ANSI C
-    pub use mimalloc_sys::{
+    pub use libmimalloc_sys::{
         mi_calloc as calloc, mi_free as free, mi_malloc as malloc, mi_realloc as realloc,
     };
     // Posix
-    pub use mimalloc_sys::mi_posix_memalign as posix_memalign;
+    pub use libmimalloc_sys::mi_posix_memalign as posix_memalign;
     // GNU
-    pub use mimalloc_sys::mi_malloc_usable_size as malloc_usable_size;
+    pub use libmimalloc_sys::mi_usable_size as malloc_usable_size;
 }
 
 /// If no malloc lib is specified, use the libc implementation