diff --git a/test/fixtures/wpt/README.md b/test/fixtures/wpt/README.md
index 236661050e5bec..a728d94361ca9c 100644
--- a/test/fixtures/wpt/README.md
+++ b/test/fixtures/wpt/README.md
@@ -11,7 +11,7 @@ See [test/wpt](../../wpt/README.md) for information on how these tests are run.
 Last update:
 
 - console: https://github.com/web-platform-tests/wpt/tree/9786a4b131/console
-- encoding: https://github.com/web-platform-tests/wpt/tree/d7f9e16c9a/encoding
+- encoding: https://github.com/web-platform-tests/wpt/tree/1821fb5f77/encoding
 - url: https://github.com/web-platform-tests/wpt/tree/418f7fabeb/url
 - resources: https://github.com/web-platform-tests/wpt/tree/e1fddfbf80/resources
 - interfaces: https://github.com/web-platform-tests/wpt/tree/8ada332aea/interfaces
diff --git a/test/fixtures/wpt/encoding/iso-2022-jp-encoder.html b/test/fixtures/wpt/encoding/iso-2022-jp-encoder.html
index 81bd18039b23d3..fa08375d9e0e38 100644
--- a/test/fixtures/wpt/encoding/iso-2022-jp-encoder.html
+++ b/test/fixtures/wpt/encoding/iso-2022-jp-encoder.html
@@ -12,8 +12,16 @@
    }, "iso-2022-jp encoder: " + desc)
  }
 
- encode("s", "s", "very basic")
- encode("\u00A5\u203Es\\\uFF90\u4F69", "%1B(J\\~s%1B(B\\%1B$B%_PP%1B(B", "basics")
- encode("\x0E\x0F\x1Bx", "%0E%0F%1Bx", "SO/SI ESC")
+ encode("s", "s", "very basic");
+ encode("\u00A5\u203Es\\\uFF90\u4F69", "%1B(J\\~s%1B(B\\%1B$B%_PP%1B(B", "basics");
+ encode("\uFF61", "%1B$B!%23%1B(B", "Katakana");
+ encode("\u0393", "%1B$B&%23%1B(B", "jis0208");
+ encode("\x0E\x0F\x1Bx", "%26%2365533%3B%26%2365533%3B%26%2365533%3Bx", "SO/SI ESC");
+ encode("\u203E\x0E\x0F\x1Bx", "%1B(J~%26%2365533%3B%26%2365533%3B%26%2365533%3Bx%1B(B", "Roman SO/SI ESC");
+ encode("\uFF61\x0E\x0F\x1Bx", "%1B$B!%23%1B(B%26%2365533%3B%26%2365533%3B%26%2365533%3Bx", "Katakana SO/SI ESC");
+ encode("\u0393\x0E\x0F\x1Bx", "%1B$B&%23%1B(B%26%2365533%3B%26%2365533%3B%26%2365533%3Bx", "jis0208 SO/SI ESC");
  encode("\uFFFD", "%26%2365533%3B", "U+FFFD");
+ encode("\u203E\uFFFD", "%1B(J~%26%2365533%3B%1B(B", "Roman U+FFFD");
+ encode("\uFF61\uFFFD", "%1B$B!%23%1B(B%26%2365533%3B", "Katakana U+FFFD");
+ encode("\u0393\uFFFD", "%1B$B&%23%1B(B%26%2365533%3B", "jis0208 U+FFFD");
 </script>
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 7f39cdc04ca76b..35aa936647e7ad 100644
--- a/test/fixtures/wpt/encoding/streams/decode-non-utf8.any.js
+++ b/test/fixtures/wpt/encoding/streams/decode-non-utf8.any.js
@@ -25,6 +25,12 @@ const encodings = [
     expected: "\u{6c34}",
     invalid: [255]
   },
+  {
+    name: 'ISO-2022-JP',
+    value: [65, 66, 67, 0x1B, 65, 66, 67],
+    expected: "ABC\u{fffd}ABC",
+    invalid: [0x0E]
+  },
   {
     name: 'ISO-8859-14',
     value: [100, 240, 114],
diff --git a/test/fixtures/wpt/versions.json b/test/fixtures/wpt/versions.json
index e83603da4c8694..b6c9a36fa641c9 100644
--- a/test/fixtures/wpt/versions.json
+++ b/test/fixtures/wpt/versions.json
@@ -4,7 +4,7 @@
     "path": "console"
   },
   "encoding": {
-    "commit": "d7f9e16c9a9d578a05b59787ba4de68b710de725",
+    "commit": "1821fb5f77723b5361058c6a8ed0b71f9d2d6b8d",
     "path": "encoding"
   },
   "url": {