diff --git a/Cargo.lock b/Cargo.lock
index a7e9cfbd866..7f2ab802ecf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -538,8 +538,8 @@ dependencies = [
  "lz4_flex",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
- "synstructure",
+ "syn 3.0.4",
+ "synstructure 0.14.0",
  "test-case",
 ]
 
@@ -778,9 +778,9 @@ checksum = "f079e83a288787bcd14a6aea84cee5c87a67c5a3e660c30f557a3d24761b3527"
 
 [[package]]
 name = "chacha20"
-version = "0.10.1"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+checksum = "65c35e4b699c7e15ccbe7ee35c005e4fc0a278d22238a2857e6ce2dadeda1b06"
 dependencies = [
  "cfg-if",
  "cpufeatures",
@@ -935,9 +935,9 @@ dependencies = [
 
 [[package]]
 name = "comfy-table"
-version = "7.2.2"
+version = "8.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "958c5d6ecf1f214b4c2bbbbf6ab9523a864bd136dcf71a7e8904799acfe1ad47"
+checksum = "136c8c4c3823846e8ba6d4bda011b4e5d5827b8bb0ac26c31f9ab31abe9f54f2"
 dependencies = [
  "unicode-segmentation",
  "unicode-width",
@@ -1137,7 +1137,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "syn 2.0.119",
- "synstructure",
+ "synstructure 0.13.2",
 ]
 
 [[package]]
@@ -1635,17 +1635,6 @@ dependencies = [
  "foldhash 0.1.5",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.16.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
-dependencies = [
- "allocator-api2",
- "equivalent",
- "foldhash 0.2.0",
-]
-
 [[package]]
 name = "hashbrown"
 version = "0.17.1"
@@ -2816,9 +2805,9 @@ dependencies = [
 
 [[package]]
 name = "owo-colors"
-version = "4.3.0"
+version = "4.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d211803b9b6b570f68772237e415a029d5a50c65d382910b879fb19d3271f94d"
+checksum = "13c45bb4a6ae1280ec0803b1ef9d3455eb50f01efbbe1447ab020f1d54fba9d8"
 
 [[package]]
 name = "page_size"
@@ -3159,11 +3148,10 @@ checksum = "d6f6ff9a378485b298a5286656da665ba74413d36db0979633275d2e708145d4"
 
 [[package]]
 name = "regress"
-version = "0.11.1"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "158a764437582235e3501f683b93a0a6f8d825d04a789dbe5ed30b8799b8908a"
+checksum = "32eef8b209c3c1c15dbad02c1f30f9539f00dc7253e0cbcdaae442a50a09d7c1"
 dependencies = [
- "hashbrown 0.16.1",
  "memchr",
 ]
 
@@ -3825,6 +3813,17 @@ dependencies = [
  "syn 2.0.119",
 ]
 
+[[package]]
+name = "synstructure"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "901704edd0dfe137f1987838ee4f259e4e063c31371bdb423f7ae38ec6f77f02"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.4",
+]
+
 [[package]]
 name = "sys-locale"
 version = "0.3.2"
@@ -4290,9 +4289,9 @@ dependencies = [
 
 [[package]]
 name = "twox-hash"
-version = "2.1.3"
+version = "2.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8464ec13c3691491391d9fce00f6416c9a48e46972f72d7865688be2080192c9"
+checksum = "5283634e518fe9e82c7b20520bb4bc209009fd16c82077c802f8111ecbb0117a"
 
 [[package]]
 name = "typeid"
@@ -4907,7 +4906,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "syn 2.0.119",
- "synstructure",
+ "synstructure 0.13.2",
 ]
 
 [[package]]
@@ -4948,7 +4947,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "syn 2.0.119",
- "synstructure",
+ "synstructure 0.13.2",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 1047859847f..a0a0fd5842b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -53,95 +53,95 @@ small_btree = { version = "~0.1.0", path = "utils/small_btree" }
 
 # Shared deps
 arbitrary = "1"
-base64 = "0.23.0"
-bitflags = "2.13.0"
-clap = "4.6.1"
+base64 = "0.23.1"
+bitflags = "2.13.1"
+clap = "4.6.6"
 colored = "3.1.1"
 cow-utils = "0.1.3"
-fast-float2 = "0.2.3"
+fast-float2 = "0.2.4"
 hashbrown = "0.17.1"
-http = { version = "1.4.1" }
+http = { version = "1.5.0" }
 iana-time-zone = "0.1.65"
 indexmap = { version = "2.14.0", default-features = false }
 indoc = "2.0.7"
 itoa = "1.0.18"
 jemallocator = "0.5.4"
-mimalloc-safe = "0.1.62"
+mimalloc-safe = "0.1.65"
 lz4_flex = "0.14.0"
-num-bigint = "0.5.0"
+num-bigint = "0.5.1"
 num-traits = "0.2.19"
-once_cell = { version = "1.21.3", default-features = false }
+once_cell = { version = "1.21.4", default-features = false }
 oneshot = "0.2.1"
 phf = { version = "0.14.0", default-features = false }
-pollster = "0.4.0"
-regex = "1.12.3"
-regress = { version = "0.11.1", features = ["utf16"] }
+pollster = "1.0.1"
+regex = "1.13.1"
+regress = { version = "0.12.0", features = ["utf16"] }
 reqwest = { version = "0.13.4", default-features = false, features = ["rustls-no-provider"] }
-rustls = { version = "0.23.40", default-features = false, features = ["ring"] }
-rustc-hash = { version = "2.1.2", default-features = false }
-serde_json = "1.0.150"
-serde = "1.0.219"
+rustls = { version = "0.23.43", default-features = false, features = ["ring"] }
+rustc-hash = { version = "2.1.3", default-features = false }
+serde_json = "1.0.151"
+serde = "1.0.229"
 static_assertions = "1.1.0"
 textwrap = "0.16.2"
-thin-vec = "0.2.18"
-time = { version = "0.3.47", default-features = false, features = [
+thin-vec = "0.2.19"
+time = { version = "0.3.55", default-features = false, features = [
     "local-offset",
     "large-dates",
     "parsing",
     "formatting",
     "macros",
 ] }
-log = "0.4.32"
-simple_logger = "5.1.0"
+log = "0.4.34"
+simple_logger = "5.2.0"
 cargo_metadata = "0.23.1"
-trybuild = "1.0.116"
+trybuild = "1.0.120"
 rayon = "1.12.0"
-toml = "1.1.2"
-color-eyre = "0.6.3"
-comfy-table = { version = "7.2.2", default-features = false }
-serde_repr = "0.1.20"
+toml = "1.1.4"
+color-eyre = "0.6.5"
+comfy-table = { version = "8.0.0", default-features = false }
+serde_repr = "0.1.21"
 bus = "2.4.1"
-wasm-bindgen = { version = "0.2.97", default-features = false }
-getrandom = { version = "0.4.2", default-features = false }
+wasm-bindgen = { version = "0.2.127", default-features = false }
+getrandom = { version = "0.4.3", default-features = false }
 console_error_panic_hook = "0.1.7"
-wasm-bindgen-test = "0.3.65"
+wasm-bindgen-test = "0.3.77"
 smol = "2.0.2"
-rustyline = { version = "18.0.0", default-features = false }
+rustyline = { version = "18.0.1", default-features = false }
 dhat = "0.3.3"
-quote = "1.0.45"
-syn = { version = "2.0.116", default-features = false }
+quote = "1.0.47"
+syn = { version = "3.0.4", default-features = false }
 proc-macro2 = "1.0"
-synstructure = "0.13"
+synstructure = "0.14"
 measureme = "12.0.3"
 pastey = "0.2.3"
-rand = "0.10.1"
-num-integer = "0.1.46"
-ryu-js = "1.0.2"
+rand = "0.10.2"
+num-integer = "0.1.47"
+ryu-js = "1.0.3"
 tap = "1.0.1"
-thiserror = { version = "2.0.18", default-features = false }
+thiserror = { version = "2.0.20", default-features = false }
 dashmap = "6.2.1"
 num_enum = "0.7.6"
 itertools = { version = "0.15.0", default-features = false }
-portable-atomic = "1.13.1"
-bytemuck = { version = "1.25.0", default-features = false }
-arrayvec = "0.7.6"
-intrusive-collections = "0.10.1"
+portable-atomic = "1.15.0"
+bytemuck = { version = "1.25.2", default-features = false }
+arrayvec = "0.7.8"
+intrusive-collections = "0.10.3"
 cfg-if = "1.0.4"
-either = "1.16.0"
+either = "1.18.0"
 sys-locale = "0.3.2"
-timezone_provider = { version = "0.2.3" }
-temporal_rs = { version = "0.2.3", default-features = false, features = ["float64_representable_durations"] }
+timezone_provider = { version = "0.2.6" }
+temporal_rs = { version = "0.2.6", default-features = false, features = ["float64_representable_durations"] }
 web-time = "1.1.0"
-criterion = "0.8.1"
+criterion = "0.8.2"
 float-cmp = "0.10.0"
 futures-lite = "2.6.1"
 test-case = "3.3.1"
 rstest = "0.26.1"
 url = "2.5.8"
-tokio = { version = "1.52.3", default-features = false }
+tokio = { version = "1.53.1", default-features = false }
 futures-concurrency = "7.7.1"
 dynify = "0.1.2"
-futures-channel = "0.3.32"
+futures-channel = "0.3.34"
 aligned-vec = "0.6.4"
 temp-env = "0.3.6"
 strum = { version = "0.28", features = ["derive"] }
diff --git a/core/macros/src/class.rs b/core/macros/src/class.rs
index 2a74be2dbc3..82cddbb61d6 100644
--- a/core/macros/src/class.rs
+++ b/core/macros/src/class.rs
@@ -13,7 +13,8 @@ use syn::spanned::Spanned;
 use syn::visit_mut::VisitMut;
 use syn::{
     Attribute, ConstParam, Expr, FnArg, GenericParam, Ident, ImplItemFn, ItemImpl, LifetimeParam,
-    Lit, Meta, MetaNameValue, PatType, Receiver, ReturnType, Signature, Token, Type, TypeParam,
+    Lit, Meta, MetaNameValue, PatType, Receiver, ReceiverKind, ReturnType, Signature, Token, Type,
+    TypeParam,
 };
 
 /// The name of a method or accessor, which can be either a string property key or a
@@ -106,7 +107,7 @@ impl Function {
             .unwrap_or("Invalid class for type".to_string());
 
         // `&mut self`
-        let downcast = if receiver.mutability.is_some() {
+        let downcast = if let ReceiverKind::Reference(_, _, Some(_)) = receiver.kind {
             quote! {
                 let object = this.as_object();
                 let self_ = &mut *object.as_ref().and_then(|o| o.downcast_mut::< #class_ty >())
@@ -115,7 +116,7 @@ impl Function {
         } else {
             quote! {
                 let object = this.as_object();
-                let self_ = &*object.as_ref().and_then(|o| o.downcast_ref::< #class_ty >())
+                let self_ = &mut *object.as_ref().and_then(|o| o.downcast_mut::< #class_ty >())
                     .ok_or( boa_engine::js_error!( #err ))?;
             }
         };
@@ -140,7 +141,11 @@ impl Function {
                 mutability: Some(_),
                 ..
             }) => match elem.as_ref() {
-                Type::Path(syn::TypePath { qself: _, path }) => {
+                Type::Path(syn::TypePath {
+                    qself: _,
+                    attrs: _,
+                    path,
+                }) => {
                     if let Some(maybe_ctx) = path.segments.last() {
                         maybe_ctx.ident == "Context"
                     } else {
diff --git a/core/wintertc/src/console/mod.rs b/core/wintertc/src/console/mod.rs
index 7774107913c..e658261502c 100644
--- a/core/wintertc/src/console/mod.rs
+++ b/core/wintertc/src/console/mod.rs
@@ -115,7 +115,7 @@ pub trait Logger: Trace {
     /// Returning an error will throw an exception in JavaScript.
     fn table(&self, data: TableData, state: &ConsoleState, context: &mut Context) -> JsResult<()> {
         let mut table = Table::new();
-        table.load_preset(comfy_table::presets::UTF8_FULL);
+        table.load_style(comfy_table::presets::UTF8_FULL);
         table.set_content_arrangement(comfy_table::ContentArrangement::Dynamic);
         table.set_header(&data.col_names);
 
diff --git a/test262_config.toml b/test262_config.toml
index 01a3fecca09..c1d8691e29c 100644
--- a/test262_config.toml
+++ b/test262_config.toml
@@ -1,4 +1,4 @@
-commit = "5c8206929d81b2d3d727ca6aac56c18358c8d790"
+commit = "d86b2294eb0a17eaa281ff12c73c473ec864c72f"
 
 [ignored]
 # Not implemented yet:
@@ -21,7 +21,6 @@ features = [
     # https://github.com/tc39/proposal-import-bytes
     "import-bytes",
 
-
     # https://github.com/tc39/proposal-intl-locale-info
     "Intl.Locale-info",
 
@@ -49,6 +48,22 @@ features = [
     # https://github.com/tc39/proposal-immutable-arraybuffer
     "immutable-arraybuffer",
 
+    # Iterator Includes
+    # https://github.com/tc39/proposal-iterator-includes
+    "iterator-includes",
+
+    # Iterator Chunking
+    # https://github.com/tc39/proposal-iterator-chunking
+    "iterator-chunking",
+
+    # Iterator Join
+    # https://github.com/tc39/proposal-iterator-join
+    "Iterator.prototype.join",
+
+    # Error Stack Accessor
+    # https://github.com/tc39/proposal-error-stack-accessor
+    "error-stack-accessor",
+
     ### Non-standard
     "caller",
 ]
diff --git a/tests/fuzz/Cargo.toml b/tests/fuzz/Cargo.toml
index 4896ad8e830..01e81fc512c 100644
--- a/tests/fuzz/Cargo.toml
+++ b/tests/fuzz/Cargo.toml
@@ -8,9 +8,9 @@ edition = "2021"
 cargo-fuzz = true
 
 [dependencies]
-libfuzzer-sys = "0.4.7"
+libfuzzer-sys = "0.4.13"
 
-arbitrary = "1.3.2"
+arbitrary = "1.4.2"
 boa_ast = { path = "../../core/ast", features = ["arbitrary"] }
 boa_engine = { path = "../../core/engine", features = ["fuzz"] }
 boa_interner = { path = "../../core/interner", features = ["arbitrary"] }
diff --git a/tests/tester/src/edition.rs b/tests/tester/src/edition.rs
index 957eae5a6fb..b3847bf3a0e 100644
--- a/tests/tester/src/edition.rs
+++ b/tests/tester/src/edition.rs
@@ -87,6 +87,22 @@ static FEATURE_EDITION: phf::Map<&'static str, SpecEdition> = phf::phf_map! {
     // https://github.com/tc39/proposal-joint-iteration
     "joint-iteration" => SpecEdition::ESNext,
 
+    // Iterator Includes
+    // https://github.com/tc39/proposal-iterator-includes
+    "iterator-includes" => SpecEdition::ESNext,
+
+    // Iterator Chunking
+    // https://github.com/tc39/proposal-iterator-chunking
+    "iterator-chunking" => SpecEdition::ESNext,
+
+    // Iterator Join
+    // https://github.com/tc39/proposal-iterator-join
+    "Iterator.prototype.join" => SpecEdition::ESNext,
+
+    // Error Stack Accessor
+    // https://github.com/tc39/proposal-error-stack-accessor
+    "error-stack-accessor" => SpecEdition::ESNext,
+
     // ============================ Next ES version ============================
 
     // Error.isError
diff --git a/tests/tester/src/main.rs b/tests/tester/src/main.rs
index c630674723e..10247e3b73e 100644
--- a/tests/tester/src/main.rs
+++ b/tests/tester/src/main.rs
@@ -452,7 +452,7 @@ fn run_test_suite(
 
         if versioned {
             let mut table = comfy_table::Table::new();
-            table.load_preset(comfy_table::presets::UTF8_HORIZONTAL_ONLY);
+            table.load_style(comfy_table::presets::UTF8_HORIZONTAL_ONLY);
             table.set_header(vec![
                 "Edition", "Total", "Passed", "Ignored", "Failed", "Panics", "%",
             ]);