diff --git a/implementation-contributed/curation_logs/javascriptcore.json b/implementation-contributed/curation_logs/javascriptcore.json
index 1fa6ef461cce48943aa37eaf376adeece6232296..8bf7f05d11355fcfe69878305b412c620a1dcafb 100644
--- a/implementation-contributed/curation_logs/javascriptcore.json
+++ b/implementation-contributed/curation_logs/javascriptcore.json
@@ -1,6 +1,6 @@
 {
-  "sourceRevisionAtLastExport": "ce279990f8",
-  "targetRevisionAtLastExport": "170f4cbbb",
+  "sourceRevisionAtLastExport": "3ced8564a6",
+  "targetRevisionAtLastExport": "f8c62a49f",
   "curatedFiles": {
     "/stress/Number-isNaN-basics.js": "DELETED_IN_TARGET",
     "/stress/Object_static_methods_Object.getOwnPropertyDescriptors-proxy.js": "DELETED_IN_TARGET",
diff --git a/implementation-contributed/javascriptcore/stress/regress-189185.js b/implementation-contributed/javascriptcore/stress/regress-189185.js
index d67f9d41b227e37a106c628e76243829ac6aa122..c016efd2686858f519d3730f6f05e0d2fde6da59 100644
--- a/implementation-contributed/javascriptcore/stress/regress-189185.js
+++ b/implementation-contributed/javascriptcore/stress/regress-189185.js
@@ -1,4 +1,5 @@
 //@ runDefault
+//@ skip if $architecture == "x86"
 // This passes if it does not crash.
 new WebAssembly.CompileError({
     valueOf() {
diff --git a/implementation-contributed/javascriptcore/stress/regress-189292.js b/implementation-contributed/javascriptcore/stress/regress-189292.js
new file mode 100644
index 0000000000000000000000000000000000000000..4314f9abe382bc3ed5ca41554564b393c6229c5d
--- /dev/null
+++ b/implementation-contributed/javascriptcore/stress/regress-189292.js
@@ -0,0 +1,18 @@
+//@ runDefault
+
+function assert(a, b) {
+    if (a != b)
+        throw "FAIL";
+}
+
+function test(script) {
+    try {
+        eval(script);
+    } catch (e) {
+        return e;
+    }
+}
+
+assert(test("class C1 { async constructor() { } }"), "SyntaxError: Cannot declare an async method named 'constructor'.");
+assert(test("class C1 { *constructor() { } }"), "SyntaxError: Cannot declare a generator function named 'constructor'.");
+assert(test("class C1 { async *constructor() { } }"), "SyntaxError: Cannot declare an async generator method named 'constructor'.");