diff --git a/test/fixtures/wpt/README.md b/test/fixtures/wpt/README.md
index e0436842bc303e..4b22ccf0f6fd4f 100644
--- a/test/fixtures/wpt/README.md
+++ b/test/fixtures/wpt/README.md
@@ -15,7 +15,7 @@ Last update:
 - console: https://github.com/web-platform-tests/wpt/tree/767ae35464/console
 - dom/abort: https://github.com/web-platform-tests/wpt/tree/d1f1ecbd52/dom/abort
 - dom/events: https://github.com/web-platform-tests/wpt/tree/ab8999891c/dom/events
-- encoding: https://github.com/web-platform-tests/wpt/tree/a58bbf6d8c/encoding
+- encoding: https://github.com/web-platform-tests/wpt/tree/5aa50dd415/encoding
 - fetch/data-urls/resources: https://github.com/web-platform-tests/wpt/tree/7c79d998ff/fetch/data-urls/resources
 - FileAPI: https://github.com/web-platform-tests/wpt/tree/cceaf3628d/FileAPI
 - hr-time: https://github.com/web-platform-tests/wpt/tree/34cafd797e/hr-time
diff --git a/test/fixtures/wpt/encoding/api-basics.any.js b/test/fixtures/wpt/encoding/api-basics.any.js
index 941b878738ce71..768f8159313ece 100644
--- a/test/fixtures/wpt/encoding/api-basics.any.js
+++ b/test/fixtures/wpt/encoding/api-basics.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: Basics
 
 test(function() {
diff --git a/test/fixtures/wpt/encoding/api-surrogates-utf8.any.js b/test/fixtures/wpt/encoding/api-surrogates-utf8.any.js
index a4ced03d428e94..52d29731494041 100644
--- a/test/fixtures/wpt/encoding/api-surrogates-utf8.any.js
+++ b/test/fixtures/wpt/encoding/api-surrogates-utf8.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: Invalid UTF-16 surrogates with UTF-8 encoding
 
 var badStrings = [
diff --git a/test/fixtures/wpt/encoding/encodeInto.any.js b/test/fixtures/wpt/encoding/encodeInto.any.js
index 69d7089006ec38..9ea36d23d08cca 100644
--- a/test/fixtures/wpt/encoding/encodeInto.any.js
+++ b/test/fixtures/wpt/encoding/encodeInto.any.js
@@ -129,6 +129,7 @@
  "Uint8ClampedArray",
  "BigInt64Array",
  "BigUint64Array",
+ "Float16Array",
  "Float32Array",
  "Float64Array"].forEach(type => {
   ["ArrayBuffer", "SharedArrayBuffer"].forEach((arrayBufferOrSharedArrayBuffer) => {
diff --git a/test/fixtures/wpt/encoding/iso-2022-jp-decoder.any.js b/test/fixtures/wpt/encoding/iso-2022-jp-decoder.any.js
index b02259b9600e47..f9915a2fcf6254 100644
--- a/test/fixtures/wpt/encoding/iso-2022-jp-decoder.any.js
+++ b/test/fixtures/wpt/encoding/iso-2022-jp-decoder.any.js
@@ -1,3 +1,5 @@
+// META: global=window,dedicatedworker,shadowrealm
+//
 function decode(input, output, desc) {
   test(function() {
     var d = new TextDecoder("iso-2022-jp"),
diff --git a/test/fixtures/wpt/encoding/legacy-mb-schinese/gb18030/gb18030-decoder.any.js b/test/fixtures/wpt/encoding/legacy-mb-schinese/gb18030/gb18030-decoder.any.js
index 99a0253ba6b680..fca68358623bd9 100644
--- a/test/fixtures/wpt/encoding/legacy-mb-schinese/gb18030/gb18030-decoder.any.js
+++ b/test/fixtures/wpt/encoding/legacy-mb-schinese/gb18030/gb18030-decoder.any.js
@@ -47,6 +47,44 @@ decode([0x83, 0x36, 0xC8, 0x30], "\uE7C8", "legacy ICU special case 1");
 decode([0xA1, 0xAD], "\u2026", "legacy ICU special case 2");
 decode([0xA1, 0xAB], "\uFF5E", "legacy ICU special case 3");
 
+// GB18030-2022
+decode([0xA6, 0xD9], "\uFE10", "GB18030-2022 1");
+decode([0xA6, 0xDA], "\uFE12", "GB18030-2022 2");
+decode([0xA6, 0xDB], "\uFE11", "GB18030-2022 3");
+decode([0xA6, 0xDC], "\uFE13", "GB18030-2022 4");
+decode([0xA6, 0xDD], "\uFE14", "GB18030-2022 5");
+decode([0xA6, 0xDE], "\uFE15", "GB18030-2022 6");
+decode([0xA6, 0xDF], "\uFE16", "GB18030-2022 7");
+decode([0xA6, 0xEC], "\uFE17", "GB18030-2022 8");
+decode([0xA6, 0xED], "\uFE18", "GB18030-2022 9");
+decode([0xA6, 0xF3], "\uFE19", "GB18030-2022 10");
+decode([0xFE, 0x59], "\u9FB4", "GB18030-2022 11");
+decode([0xFE, 0x61], "\u9FB5", "GB18030-2022 12");
+decode([0xFE, 0x66], "\u9FB6", "GB18030-2022 13");
+decode([0xFE, 0x67], "\u9FB7", "GB18030-2022 14");
+decode([0xFE, 0x6D], "\u9FB8", "GB18030-2022 15");
+decode([0xFE, 0x7E], "\u9FB9", "GB18030-2022 16");
+decode([0xFE, 0x90], "\u9FBA", "GB18030-2022 17");
+decode([0xFE, 0xA0], "\u9FBB", "GB18030-2022 18");
+decode([0x82, 0x35, 0x90, 0x37], "\uE81E", "GB18030-2022 19");
+decode([0x82, 0x35, 0x90, 0x38], "\uE826", "GB18030-2022 20");
+decode([0x82, 0x35, 0x90, 0x39], "\uE82B", "GB18030-2022 21");
+decode([0x82, 0x35, 0x91, 0x30], "\uE82C", "GB18030-2022 22");
+decode([0x82, 0x35, 0x91, 0x31], "\uE832", "GB18030-2022 23");
+decode([0x82, 0x35, 0x91, 0x32], "\uE843", "GB18030-2022 24");
+decode([0x82, 0x35, 0x91, 0x33], "\uE854", "GB18030-2022 25");
+decode([0x82, 0x35, 0x91, 0x34], "\uE864", "GB18030-2022 26");
+decode([0x84, 0x31, 0x82, 0x36], "\uE78D", "GB18030-2022 27");
+decode([0x84, 0x31, 0x82, 0x37], "\uE78F", "GB18030-2022 28");
+decode([0x84, 0x31, 0x82, 0x38], "\uE78E", "GB18030-2022 29");
+decode([0x84, 0x31, 0x82, 0x39], "\uE790", "GB18030-2022 30");
+decode([0x84, 0x31, 0x83, 0x30], "\uE791", "GB18030-2022 31");
+decode([0x84, 0x31, 0x83, 0x31], "\uE792", "GB18030-2022 32");
+decode([0x84, 0x31, 0x83, 0x32], "\uE793", "GB18030-2022 33");
+decode([0x84, 0x31, 0x83, 0x33], "\uE794", "GB18030-2022 34");
+decode([0x84, 0x31, 0x83, 0x34], "\uE795", "GB18030-2022 35");
+decode([0x84, 0x31, 0x83, 0x35], "\uE796", "GB18030-2022 36");
+
 let i = 0;
 for (const range of ranges) {
   const pointer = range[0];
diff --git a/test/fixtures/wpt/encoding/legacy-mb-schinese/gb18030/gb18030-encoder.html b/test/fixtures/wpt/encoding/legacy-mb-schinese/gb18030/gb18030-encoder.html
index a6570c8d2b8001..531d26084e27dc 100644
--- a/test/fixtures/wpt/encoding/legacy-mb-schinese/gb18030/gb18030-encoder.html
+++ b/test/fixtures/wpt/encoding/legacy-mb-schinese/gb18030/gb18030-encoder.html
@@ -24,6 +24,44 @@
  encode("\u2026", "%A1%AD", "legacy ICU special case 2");
  encode("\uFF5E", "%A1%AB", "legacy ICU special case 3");
 
+ // GB18030-2022
+ encode("\uFE10", "%A6%D9", "GB18030-2022 1");
+ encode("\uFE12", "%A6%DA", "GB18030-2022 2");
+ encode("\uFE11", "%A6%DB", "GB18030-2022 3");
+ encode("\uFE13", "%A6%DC", "GB18030-2022 4");
+ encode("\uFE14", "%A6%DD", "GB18030-2022 5");
+ encode("\uFE15", "%A6%DE", "GB18030-2022 6");
+ encode("\uFE16", "%A6%DF", "GB18030-2022 7");
+ encode("\uFE17", "%A6%EC", "GB18030-2022 8");
+ encode("\uFE18", "%A6%ED", "GB18030-2022 9");
+ encode("\uFE19", "%A6%F3", "GB18030-2022 10");
+ encode("\u9FB4", "%FEY", "GB18030-2022 11");
+ encode("\u9FB5", "%FEa", "GB18030-2022 12");
+ encode("\u9FB6", "%FEf", "GB18030-2022 13");
+ encode("\u9FB7", "%FEg", "GB18030-2022 14");
+ encode("\u9FB8", "%FEm", "GB18030-2022 15");
+ encode("\u9FB9", "%FE~", "GB18030-2022 16");
+ encode("\u9FBA", "%FE%90", "GB18030-2022 17");
+ encode("\u9FBB", "%FE%A0", "GB18030-2022 18");
+ encode("\uE78D", "%841%826", "GB18030-2022 19");
+ encode("\uE78E", "%841%828", "GB18030-2022 20");
+ encode("\uE78F", "%841%827", "GB18030-2022 21");
+ encode("\uE790", "%841%829", "GB18030-2022 22");
+ encode("\uE791", "%841%830", "GB18030-2022 23");
+ encode("\uE792", "%841%831", "GB18030-2022 24");
+ encode("\uE793", "%841%832", "GB18030-2022 25");
+ encode("\uE794", "%841%833", "GB18030-2022 26");
+ encode("\uE795", "%841%834", "GB18030-2022 27");
+ encode("\uE796", "%841%835", "GB18030-2022 28");
+ encode("\uE81E", "%825%907", "GB18030-2022 29");
+ encode("\uE826", "%825%908", "GB18030-2022 30");
+ encode("\uE82B", "%825%909", "GB18030-2022 31");
+ encode("\uE82C", "%825%910", "GB18030-2022 32");
+ encode("\uE832", "%825%911", "GB18030-2022 33");
+ encode("\uE843", "%825%912", "GB18030-2022 34");
+ encode("\uE854", "%825%913", "GB18030-2022 35");
+ encode("\uE864", "%825%914", "GB18030-2022 36");
+
  const upperCaseNibble = x => {
    return Math.floor(x).toString(16).toUpperCase();
  }
diff --git a/test/fixtures/wpt/encoding/resources/utf-32-big-endian-nobom.xml b/test/fixtures/wpt/encoding/resources/utf-32-big-endian-nobom.xml
index f704501ccae0d6..f51213c965ce74 100644
Binary files a/test/fixtures/wpt/encoding/resources/utf-32-big-endian-nobom.xml and b/test/fixtures/wpt/encoding/resources/utf-32-big-endian-nobom.xml differ
diff --git a/test/fixtures/wpt/encoding/resources/utf-32-little-endian-nobom.xml b/test/fixtures/wpt/encoding/resources/utf-32-little-endian-nobom.xml
index 465f44df5f782a..64e6051a2c6b07 100644
Binary files a/test/fixtures/wpt/encoding/resources/utf-32-little-endian-nobom.xml and b/test/fixtures/wpt/encoding/resources/utf-32-little-endian-nobom.xml differ
diff --git a/test/fixtures/wpt/encoding/sharedarraybuffer.https.html b/test/fixtures/wpt/encoding/sharedarraybuffer.https.html
index 2496edacb89ee8..2cda3e5fb1cf98 100644
--- a/test/fixtures/wpt/encoding/sharedarraybuffer.https.html
+++ b/test/fixtures/wpt/encoding/sharedarraybuffer.https.html
@@ -6,9 +6,7 @@
 test(() => {
   const decoder = new TextDecoder('utf-8');
   const buffer = new SharedArrayBuffer(4);
-  assert_throws_js(TypeError, () => {
-    decoder.decode(new Uint8Array(buffer));
-  }, 'constructing TextDecoder with SharedArrayBuffer view should throw');
+  assert_equals(decoder.decode(new Uint8Array(buffer)), "\u0000\u0000\u0000\u0000");
 }, 'decoding SharedArrayBuffer');
 
 </script>
diff --git a/test/fixtures/wpt/encoding/streams/backpressure.any.js b/test/fixtures/wpt/encoding/streams/backpressure.any.js
index 22f7f0aa2bc643..0f67e3358414d3 100644
--- a/test/fixtures/wpt/encoding/streams/backpressure.any.js
+++ b/test/fixtures/wpt/encoding/streams/backpressure.any.js
@@ -1,4 +1,4 @@
-// META: global=window,worker
+// META: global=window,worker,shadowrealm
 
 'use strict';
 
diff --git a/test/fixtures/wpt/encoding/streams/decode-attributes.any.js b/test/fixtures/wpt/encoding/streams/decode-attributes.any.js
index 0843cc665fd39f..f64f45b56acba9 100644
--- a/test/fixtures/wpt/encoding/streams/decode-attributes.any.js
+++ b/test/fixtures/wpt/encoding/streams/decode-attributes.any.js
@@ -1,4 +1,4 @@
-// META: global=window,worker
+// META: global=window,worker,shadowrealm
 
 'use strict';
 
diff --git a/test/fixtures/wpt/encoding/streams/decode-bad-chunks.any.js b/test/fixtures/wpt/encoding/streams/decode-bad-chunks.any.js
index b7b2dd58459d0e..21d61427a2bca3 100644
--- a/test/fixtures/wpt/encoding/streams/decode-bad-chunks.any.js
+++ b/test/fixtures/wpt/encoding/streams/decode-bad-chunks.any.js
@@ -1,4 +1,4 @@
-// META: global=window,worker
+// META: global=window,worker,shadowrealm
 
 'use strict';
 
diff --git a/test/fixtures/wpt/encoding/streams/decode-non-utf8.any.js b/test/fixtures/wpt/encoding/streams/decode-non-utf8.any.js
index 2950a9e58edcbd..effdee3b430de5 100644
--- a/test/fixtures/wpt/encoding/streams/decode-non-utf8.any.js
+++ b/test/fixtures/wpt/encoding/streams/decode-non-utf8.any.js
@@ -1,4 +1,4 @@
-// META: global=window,worker
+// META: global=window,worker,shadowrealm
 
 'use strict';
 
diff --git a/test/fixtures/wpt/encoding/streams/readable-writable-properties.any.js b/test/fixtures/wpt/encoding/streams/readable-writable-properties.any.js
index 234649209cfa40..8084cb99421450 100644
--- a/test/fixtures/wpt/encoding/streams/readable-writable-properties.any.js
+++ b/test/fixtures/wpt/encoding/streams/readable-writable-properties.any.js
@@ -1,4 +1,4 @@
-// META: global=window,worker
+// META: global=window,worker,shadowrealm
 
 // This just tests that the "readable" and "writable" properties pass the brand
 // checks. All other relevant attributes are covered by the IDL tests.
diff --git a/test/fixtures/wpt/encoding/textdecoder-arguments.any.js b/test/fixtures/wpt/encoding/textdecoder-arguments.any.js
index f469dcd30eaf87..2d137b7aa37e15 100644
--- a/test/fixtures/wpt/encoding/textdecoder-arguments.any.js
+++ b/test/fixtures/wpt/encoding/textdecoder-arguments.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: TextDecoder decode() optional arguments
 
 test(t => {
diff --git a/test/fixtures/wpt/encoding/textdecoder-byte-order-marks.any.js b/test/fixtures/wpt/encoding/textdecoder-byte-order-marks.any.js
index 9ef0d73141a0e0..31350fdf689ed6 100644
--- a/test/fixtures/wpt/encoding/textdecoder-byte-order-marks.any.js
+++ b/test/fixtures/wpt/encoding/textdecoder-byte-order-marks.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: Byte-order marks
 
 var testCases = [
diff --git a/test/fixtures/wpt/encoding/textdecoder-fatal-streaming.any.js b/test/fixtures/wpt/encoding/textdecoder-fatal-streaming.any.js
index 0d58b2e1d7d8a1..9043b43eae29aa 100644
--- a/test/fixtures/wpt/encoding/textdecoder-fatal-streaming.any.js
+++ b/test/fixtures/wpt/encoding/textdecoder-fatal-streaming.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: End-of-file
 
 test(function() {
diff --git a/test/fixtures/wpt/encoding/textdecoder-fatal.any.js b/test/fixtures/wpt/encoding/textdecoder-fatal.any.js
index f9ccb2dfa7608b..054b35f21f4887 100644
--- a/test/fixtures/wpt/encoding/textdecoder-fatal.any.js
+++ b/test/fixtures/wpt/encoding/textdecoder-fatal.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: Fatal flag
 
 var bad = [
diff --git a/test/fixtures/wpt/encoding/textdecoder-ignorebom.any.js b/test/fixtures/wpt/encoding/textdecoder-ignorebom.any.js
index 81f210eec89b4e..e825698ba40523 100644
--- a/test/fixtures/wpt/encoding/textdecoder-ignorebom.any.js
+++ b/test/fixtures/wpt/encoding/textdecoder-ignorebom.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: TextDecoder ignoreBOM option
 
 var cases = [
diff --git a/test/fixtures/wpt/encoding/textdecoder-utf16-surrogates.any.js b/test/fixtures/wpt/encoding/textdecoder-utf16-surrogates.any.js
index b08ea56cee38a2..7e8322cd19c213 100644
--- a/test/fixtures/wpt/encoding/textdecoder-utf16-surrogates.any.js
+++ b/test/fixtures/wpt/encoding/textdecoder-utf16-surrogates.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: UTF-16 surrogate handling
 
 var bad = [
diff --git a/test/fixtures/wpt/encoding/textencoder-utf16-surrogates.any.js b/test/fixtures/wpt/encoding/textencoder-utf16-surrogates.any.js
index 014a0ebb12d0f6..31657516455bd6 100644
--- a/test/fixtures/wpt/encoding/textencoder-utf16-surrogates.any.js
+++ b/test/fixtures/wpt/encoding/textencoder-utf16-surrogates.any.js
@@ -1,3 +1,4 @@
+// META: global=window,dedicatedworker,shadowrealm
 // META: title=Encoding API: USVString surrogate handling when encoding
 
 var bad = [
diff --git a/test/fixtures/wpt/versions.json b/test/fixtures/wpt/versions.json
index 5d0d07eeac2a35..a3d33dfb12b91a 100644
--- a/test/fixtures/wpt/versions.json
+++ b/test/fixtures/wpt/versions.json
@@ -20,7 +20,7 @@
     "path": "dom/events"
   },
   "encoding": {
-    "commit": "a58bbf6d8c0db1f1fd5352e846acb0754ee55567",
+    "commit": "5aa50dd4151b5bc1d04d5505366c6e27df30af5b",
     "path": "encoding"
   },
   "fetch/data-urls/resources": {
diff --git a/test/wpt/status/encoding.json b/test/wpt/status/encoding.json
index db481cca6a09df..e78a8b3c0791be 100644
--- a/test/wpt/status/encoding.json
+++ b/test/wpt/status/encoding.json
@@ -77,6 +77,12 @@
     "requires": ["full-icu"]
   },
   "encodeInto.any.js": {
+    "fail": {
+      "expected": [
+        "Invalid encodeInto() destination: Float16Array, backed by: ArrayBuffer",
+        "Invalid encodeInto() destination: Float16Array, backed by: SharedArrayBuffer"
+      ]
+    },
     "requires": ["small-icu"]
   },
   "textdecoder-copy.any.js": {