--- a/js/src/tests/test262-update.py
+++ b/js/src/tests/test262-update.py
@@ -16,32 +16,39 @@ import sys
 
 from functools import partial
 from itertools import chain
 
 # Skip all tests which use features not supported in SpiderMonkey.
 UNSUPPORTED_FEATURES = set([
     "tail-call-optimization",
     "class-fields-public",
+    "class-static-fields-public",
     "class-fields-private",
+    "class-static-fields-private",
+    "class-methods-private",
+    "class-static-methods-private",
+    "dynamic-import",
     "regexp-dotall",
     "regexp-lookbehind",
     "regexp-named-groups",
     "regexp-unicode-property-escapes",
     "numeric-separator-literal",
     "Intl.Locale",
     "String.prototype.matchAll",
     "Symbol.matchAll",
     "global",
     "export-star-as-namespace-from-module",
 ])
 FEATURE_CHECK_NEEDED = {
     "Atomics": "!this.hasOwnProperty('Atomics')",
     "BigInt": "!this.hasOwnProperty('BigInt')",
     "SharedArrayBuffer": "!this.hasOwnProperty('SharedArrayBuffer')",
+    "Intl.ListFormat": "!Intl.hasOwnProperty('ListFormat')",
+    "Intl.Segmenter": "!Intl.hasOwnProperty('Segmenter')",
 }
 RELEASE_OR_BETA = set()
 
 
 @contextlib.contextmanager
 def TemporaryDirectory():
     tmpDir = tempfile.mkdtemp()
     try: