diff --git a/node.gyp b/node.gyp
index 6397deea9af..0496f75fea5 100644
--- a/node.gyp
+++ b/node.gyp
@@ -1332,7 +1332,7 @@
       ],
       'conditions': [
         [ 'node_shared_simdutf=="false"', {
-          'dependencies': [ 'deps/simdutf/simdutf.gyp:simdutf#host' ],
+          'dependencies': [ 'tools/v8_gypfiles/v8.gyp:simdutf#host' ],
         }],
         [ 'node_shared_libuv=="false"', {
           'dependencies': [ 'deps/uv/uv.gyp:libuv#host' ],
diff --git a/node.gypi b/node.gypi
index 308d614ab02..02a7d626712 100644
--- a/node.gypi
+++ b/node.gypi
@@ -226,7 +226,7 @@
     }],
 
     [ 'node_shared_simdutf=="false"', {
-        'dependencies': [ 'deps/simdutf/simdutf.gyp:simdutf' ],
+        'dependencies': [ 'tools/v8_gypfiles/v8.gyp:simdutf' ],
     }],
 
     [ 'node_shared_brotli=="false"', {
diff --git a/tools/v8_gypfiles/features.gypi b/tools/v8_gypfiles/features.gypi
index 582fcee3901..0214bec80dd 100644
--- a/tools/v8_gypfiles/features.gypi
+++ b/tools/v8_gypfiles/features.gypi
@@ -87,6 +87,12 @@
       }, {
         'v8_enable_private_mapping_fork_optimization': 0,
       }],
+
+      ['OS in "aix os400"', {
+        'v8_enable_leaptiering': 0,
+      }, {
+        'v8_enable_leaptiering': 1,
+      }],
     ],
 
     # Variables from BUILD.gn
@@ -483,6 +489,9 @@
       ['v8_enable_extensible_ro_snapshot==1', {
         'defines': ['V8_ENABLE_EXTENSIBLE_RO_SNAPSHOT',],
       }],
+      ['v8_enable_leaptiering==1', {
+        'defines': ['V8_ENABLE_LEAPTIERING',],
+      }],
       ['v8_enable_precise_zone_stats==1', {
         'defines': ['V8_ENABLE_PRECISE_ZONE_STATS',],
       }],
diff --git a/tools/v8_gypfiles/toolchain.gypi b/tools/v8_gypfiles/toolchain.gypi
index 937f3f51976..2d0221e2fa0 100644
--- a/tools/v8_gypfiles/toolchain.gypi
+++ b/tools/v8_gypfiles/toolchain.gypi
@@ -716,7 +716,10 @@
           }],
           # Temporary refs: https://github.com/nodejs/node/pull/23801
           ['v8_enable_handle_zapping==1', {
-            'defines': ['ENABLE_HANDLE_ZAPPING',],
+            'defines': [
+              'ENABLE_LOCAL_HANDLE_ZAPPING',
+              'ENABLE_GLOBAL_HANDLE_ZAPPING',
+            ],
           }],
         ],
 
diff --git a/tools/v8_gypfiles/v8.gyp b/tools/v8_gypfiles/v8.gyp
index c3724fe7a5b..360b80f93e3 100644
--- a/tools/v8_gypfiles/v8.gyp
+++ b/tools/v8_gypfiles/v8.gyp
@@ -1056,6 +1056,8 @@
         'v8_zlib',
         'v8_pch',
         'fp16',
+        'highway',
+        'simdutf',
         'abseil.gyp:abseil',
       ],
       'includes': ['inspector.gypi'],
@@ -2260,5 +2262,69 @@
         ],
       },
     },  # fp16
+    {
+      'target_name': 'highway',
+      'type': 'static_library',
+      'toolsets': ['host', 'target'],
+      'variables': {
+        'HIGHWAY_ROOT': '../../deps/v8/third_party/highway',
+      },
+      'direct_dependent_settings': {
+        'include_dirs': [
+          '<(HIGHWAY_ROOT)/src',
+        ],
+        'conditions': [
+          ['v8_target_arch=="ia32"', {
+            'defines': ['HWY_BROKEN_TARGETS=(HWY_AVX2|HWY_AVX3)',],
+          }],
+          ['v8_target_arch=="arm64"', {
+            'defines': ['HWY_BROKEN_TARGETS=HWY_ALL_SVE',],
+          }],
+          ['v8_target_arch=="ppc64" or v8_target_arch=="s390x"', {
+            'defines': ['TOOLCHAIN_MISS_ASM_HWCAP_H',],
+          }],
+          ['v8_target_arch=="s390x"', {
+            'defines': ['HWY_BROKEN_EMU128=0',],
+          }],
+          ['OS == "aix"', {
+            'defines': ['HWY_BROKEN_EMU128=0',],
+          }],
+          ['v8_target_arch=="arm" and arm_version==7', {
+            'defines': ['HWY_BROKEN_EMU128=0',],
+          }],
+        ],
+      },
+      'include_dirs': [
+        '<(HIGHWAY_ROOT)/src',
+      ],
+      'conditions': [
+        ['v8_target_arch=="ia32"', {
+          'defines': ['HWY_BROKEN_TARGETS=(HWY_AVX2|HWY_AVX3)',],
+        }],
+        ['v8_target_arch=="arm64"', {
+          'defines': ['HWY_BROKEN_TARGETS=HWY_ALL_SVE',],
+        }],
+        ['v8_target_arch=="ppc64" or v8_target_arch=="s390x"', {
+          'defines': ['TOOLCHAIN_MISS_ASM_HWCAP_H',],
+        }],
+      ],
+      'sources': [
+        '<!@pymod_do_main(GN-scraper "<(HIGHWAY_ROOT)/BUILD.gn"  "source_set.\\"libhwy.*?sources = ")',
+      ],
+    },  # highway
+    {
+      'target_name': 'simdutf',
+      'type': 'static_library',
+      'toolsets': ['host', 'target'],
+      'direct_dependent_settings': {
+        'include_dirs': [
+          '<(V8_ROOT)/third_party/simdutf',
+        ],
+      },
+      'include_dirs': ['.'],
+      'sources': [
+        '<(V8_ROOT)/third_party/simdutf/simdutf.cpp',
+      ],
+    },  # simdutf
   ],
 }