diff --git a/mmtk/Cargo.lock b/mmtk/Cargo.lock
index 4c45486..c0634d7 100644
--- a/mmtk/Cargo.lock
+++ b/mmtk/Cargo.lock
@@ -108,29 +108,29 @@ dependencies = [
 
 [[package]]
 name = "bytemuck"
-version = "1.20.0"
+version = "1.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b37c88a63ffd85d15b406896cc343916d7cf57838a847b3a6f2ca5d39a5695a"
+checksum = "ef657dfab802224e671f5818e9a4935f9b1957ed18e58292690cc39e7a4092a3"
 dependencies = [
  "bytemuck_derive",
 ]
 
 [[package]]
 name = "bytemuck_derive"
-version = "1.8.0"
+version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bcfcc3cd946cb52f0bbfdbbcfa2f4e24f75ebb6c0e1002f7c25904fada18b9ec"
+checksum = "3fa76293b4f7bb636ab88fd78228235b5248b4d05cc589aed610f954af5d7c7a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
 name = "cc"
-version = "1.2.5"
+version = "1.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c31a0499c1dc64f458ad13872de75c0eb7e3fdb0e67964610c914b034fc5956e"
+checksum = "a012a0df96dd6d06ba9a1b29d6402d1a5d77c6befd2566afdc26e10603dc93d7"
 dependencies = [
  "jobserver",
  "libc",
@@ -219,7 +219,7 @@ checksum = "4e018fccbeeb50ff26562ece792ed06659b9c2dae79ece77c4456bb10d9bf79b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
@@ -230,7 +230,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
@@ -262,14 +262,14 @@ checksum = "f282cfdfe92516eb26c2af8589c274c7c17681f5ecc03c18255fe741c6aa64eb"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
 name = "env_filter"
-version = "0.1.2"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f2c92ceda6ceec50f43169f9ee8424fe2db276791afde7b2cd8bc084cb376ab"
+checksum = "186e05a59d4c50738528153b83b0b0194d3a29507dfec16eccd4b342903397d0"
 dependencies = [
  "log",
  "regex",
@@ -277,9 +277,9 @@ dependencies = [
 
 [[package]]
 name = "env_logger"
-version = "0.11.5"
+version = "0.11.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e13fa619b91fb2381732789fc5de83b45675e882f66623b7d8cb4f643017018d"
+checksum = "dcaee3d8e3cfc3fd92428d477bc97fc29ec8716d180c0d74c643bb26166660e0"
 dependencies = [
  "anstream",
  "anstyle",
@@ -449,7 +449,7 @@ checksum = "1ec89e9337638ecdc08744df490b221a7399bf8d164eb52a665454e60e075ad6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
@@ -584,7 +584,7 @@ dependencies = [
 [[package]]
 name = "mmtk"
 version = "0.30.0"
-source = "git+https://github.com/mmtk/mmtk-core.git?rev=c0f97884234b51b13c8ba5d1563a8e0f592d11c2#c0f97884234b51b13c8ba5d1563a8e0f592d11c2"
+source = "git+https://github.com/mmtk/mmtk-core.git?rev=ec745353a8de72b645613e0fef3ab7f5f1ad9bd1#ec745353a8de72b645613e0fef3ab7f5f1ad9bd1"
 dependencies = [
  "atomic",
  "atomic-traits",
@@ -620,12 +620,12 @@ dependencies = [
 [[package]]
 name = "mmtk-macros"
 version = "0.30.0"
-source = "git+https://github.com/mmtk/mmtk-core.git?rev=c0f97884234b51b13c8ba5d1563a8e0f592d11c2#c0f97884234b51b13c8ba5d1563a8e0f592d11c2"
+source = "git+https://github.com/mmtk/mmtk-core.git?rev=ec745353a8de72b645613e0fef3ab7f5f1ad9bd1#ec745353a8de72b645613e0fef3ab7f5f1ad9bd1"
 dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
@@ -731,9 +731,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.37"
+version = "1.0.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
+checksum = "0e4dccaaaf89514f546c693ddc140f729f958c247918a13380cccc6078391acc"
 dependencies = [
  "proc-macro2",
 ]
@@ -798,9 +798,9 @@ dependencies = [
 
 [[package]]
 name = "rustversion"
-version = "1.0.18"
+version = "1.0.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e819f2bc632f285be6d7cd36e25940d45b2391dd6d9b939e79de557f7014248"
+checksum = "f7c45b9784283f1b2e7fb61b42047c2fd678ef0960d4f6f1eba131594cc369d4"
 
 [[package]]
 name = "scopeguard"
@@ -816,22 +816,22 @@ checksum = "3cb6eb87a131f756572d7fb904f6e7b68633f09cca868c5df1c4b8d1a694bbba"
 
 [[package]]
 name = "serde"
-version = "1.0.216"
+version = "1.0.217"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b9781016e935a97e8beecf0c933758c97a5520d32930e460142b4cd80c6338e"
+checksum = "02fc4265df13d6fa1d00ecff087228cc0a2b5f3c0e87e258d8b94a156e984c70"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.216"
+version = "1.0.217"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46f859dbbf73865c6627ed570e78961cd3ac92407a2d117204c49232485da55e"
+checksum = "5a9bf7cf98d04a2b28aead066b7496853d4779c9cc183c440dbac457641e19a0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
@@ -883,7 +883,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
@@ -898,9 +898,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.90"
+version = "2.0.95"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "919d3b74a5dd0ccd15aeb8f93e7006bd9e14c295087c9896a110f490752bcf31"
+checksum = "46f71c0377baf4ef1cc3e3402ded576dccc315800fbc62dfc7fe04b009773b4a"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -915,7 +915,7 @@ checksum = "c8af7666ab7b6390ab78131fb5b0fce11d6b7a6951602017c35fa82800708971"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
 
 [[package]]
@@ -1145,7 +1145,7 @@ checksum = "2380878cad4ac9aac1e2435f3eb4020e8374b5f13c296cb75b4620ff8e229154"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
  "synstructure",
 ]
 
@@ -1166,7 +1166,7 @@ checksum = "595eed982f7d355beb85837f651fa22e90b3c044842dc7f2c2842c086f295808"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
  "synstructure",
 ]
 
@@ -1189,5 +1189,5 @@ checksum = "6eafa6dfb17584ea3e2bd6e76e0cc15ad7af12b09abdd1ca55961bed9b1063c6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.90",
+ "syn 2.0.95",
 ]
diff --git a/mmtk/Cargo.toml b/mmtk/Cargo.toml
index 1d1aa8c..3747132 100644
--- a/mmtk/Cargo.toml
+++ b/mmtk/Cargo.toml
@@ -29,7 +29,7 @@ log = {version = "0.4", features = ["max_level_trace", "release_max_level_off"]
 # - change branch/rev
 # - change repo name
 # But other changes including adding/removing whitespaces in commented lines may break the CI.
-mmtk = { git = "https://github.com/mmtk/mmtk-core.git", rev = "c0f97884234b51b13c8ba5d1563a8e0f592d11c2" }
+mmtk = { git = "https://github.com/mmtk/mmtk-core.git", rev = "ec745353a8de72b645613e0fef3ab7f5f1ad9bd1" }
 # Uncomment the following to build locally - if you change the path locally, do not commit the change in a PR
 # mmtk = { path = "../repos/mmtk-core" }
 
@@ -40,3 +40,4 @@ nogc = []
 semispace = []
 marksweep = []
 malloc_marksweep = ["mmtk/malloc_mark_sweep"]
+binding_side_ref_proc = []
diff --git a/mmtk/rust-toolchain b/mmtk/rust-toolchain
index 79e15fd..6b4de0a 100644
--- a/mmtk/rust-toolchain
+++ b/mmtk/rust-toolchain
@@ -1 +1 @@
-1.77.0
+1.83.0
diff --git a/mmtk/src/api.rs b/mmtk/src/api.rs
index 8f18d05..30038cb 100644
--- a/mmtk/src/api.rs
+++ b/mmtk/src/api.rs
@@ -154,12 +154,6 @@ pub extern "C" fn total_bytes() -> usize {
     memory_manager::total_bytes(&SINGLETON)
 }
 
-#[no_mangle]
-#[cfg(feature = "sanity")]
-pub extern "C" fn scan_region() {
-    memory_manager::scan_region(&SINGLETON)
-}
-
 #[no_mangle]
 pub extern "C" fn handle_user_collection_request(tls: VMMutatorThread) {
     memory_manager::handle_user_collection_request::<JikesRVM>(&SINGLETON, tls);
diff --git a/mmtk/src/jikesrvm_calls/mod.rs b/mmtk/src/jikesrvm_calls/mod.rs
index 13a22c7..4ee5bd7 100644
--- a/mmtk/src/jikesrvm_calls/mod.rs
+++ b/mmtk/src/jikesrvm_calls/mod.rs
@@ -31,7 +31,7 @@ pub fn prepare_mutator(tls: VMWorkerThread, mutator_tls: VMMutatorThread) {
     unsafe {
         // asm! is not smart enough to figure out VMMutatorThread has repr(transparent) and
         // therefore the same representation as a pointer.
-        let mutator_tls_usize = std::mem::transmute::<_, usize>(mutator_tls);
+        let mutator_tls_usize = std::mem::transmute::<VMMutatorThread, usize>(mutator_tls);
         jtoc_call!(PREPARE_MUTATOR_METHOD_OFFSET, tls, mutator_tls_usize);
     }
 }
diff --git a/mmtk/src/scan_boot_image.rs b/mmtk/src/scan_boot_image.rs
index 7e0e2d8..de6e724 100644
--- a/mmtk/src/scan_boot_image.rs
+++ b/mmtk/src/scan_boot_image.rs
@@ -98,12 +98,12 @@ fn process_chunk(
             /* enqueue the specified slot or slots */
             debug_assert!(conversions::is_address_aligned(Address::from_usize(offset)));
             let mut slot: Address = image_start + offset;
-            if cfg!(feature = "debug") {
+            if cfg!(debug_assertions) {
                 REFS.fetch_add(1, Ordering::Relaxed);
             }
 
             if !FILTER || slot.load::<Address>() > map_end {
-                if cfg!(feature = "debug") {
+                if cfg!(debug_assertions) {
                     ROOTS.fetch_add(1, Ordering::Relaxed);
                 }
                 report_slot(JikesRVMSlot::from_address(slot));
@@ -113,11 +113,11 @@ fn process_chunk(
                     offset += BYTES_IN_ADDRESS;
                     slot = image_start + offset;
                     debug_assert!(conversions::is_address_aligned(slot));
-                    if cfg!(feature = "debug") {
+                    if cfg!(debug_assertions) {
                         REFS.fetch_add(1, Ordering::Relaxed);
                     }
                     if !FILTER || slot.load::<Address>() > map_end {
-                        if cfg!(feature = "debug") {
+                        if cfg!(debug_assertions) {
                             ROOTS.fetch_add(1, Ordering::Relaxed);
                         }
                         // TODO: check_reference(slot) ?
diff --git a/mmtk/src/tib_layout_constants.rs b/mmtk/src/tib_layout_constants.rs
index 1be380d..ee84804 100644
--- a/mmtk/src/tib_layout_constants.rs
+++ b/mmtk/src/tib_layout_constants.rs
@@ -53,4 +53,4 @@ pub const TIB_FIRST_VIRTUAL_METHOD_INDEX: usize =
  *  <li>fits into a PowerPC 16bit immediate operand</li>
  *   </ul>
  */
-pub const NEEDS_DYNAMIC_LINK: isize = i16::min_value() as isize + 1;
+pub const NEEDS_DYNAMIC_LINK: isize = i16::MIN as isize + 1;