diff --git a/ext/node/polyfills/v8.ts b/ext/node/polyfills/v8.ts
index cad00bd7f7..f06227cd54 100644
--- a/ext/node/polyfills/v8.ts
+++ b/ext/node/polyfills/v8.ts
@@ -14,7 +14,7 @@ import {
 
 import { Buffer } from "node:buffer";
 
-import { notImplemented } from "ext:deno_node/_utils.ts";
+import { notImplemented, warnNotImplemented } from "ext:deno_node/_utils.ts";
 
 export function cachedDataVersionTag() {
   return op_v8_cached_data_version_tag();
@@ -79,7 +79,41 @@ export function deserialize(data) {
 }
 export class Serializer {
   constructor() {
-    notImplemented("v8.Serializer.prototype.constructor");
+    warnNotImplemented("v8.Serializer.prototype.constructor");
+  }
+
+  releaseBuffer(): Buffer {
+    warnNotImplemented("v8.DefaultSerializer.prototype.releaseBuffer");
+    return Buffer.from("");
+  }
+
+  transferArrayBuffer(_id: number, _arrayBuffer: ArrayBuffer): void {
+    warnNotImplemented("v8.DefaultSerializer.prototype.transferArrayBuffer");
+  }
+
+  writeDouble(_value: number): void {
+    warnNotImplemented("v8.DefaultSerializer.prototype.writeDouble");
+  }
+
+  writeHeader(): void {
+    warnNotImplemented("v8.DefaultSerializer.prototype.writeHeader");
+  }
+
+  writeRawBytes(_value: ArrayBufferView): void {
+    warnNotImplemented("v8.DefaultSerializer.prototype.writeRawBytes");
+  }
+
+  writeUint32(_value: number): void {
+    warnNotImplemented("v8.DefaultSerializer.prototype.writeUint32");
+  }
+
+  writeUint64(_hi: number, _lo: number): void {
+    warnNotImplemented("v8.DefaultSerializer.prototype.writeUint64");
+  }
+
+  // deno-lint-ignore no-explicit-any
+  writeValue(_value: any): void {
+    warnNotImplemented("v8.DefaultSerializer.prototype.writeValue");
   }
 }
 export class Deserializer {
@@ -87,9 +121,10 @@ export class Deserializer {
     notImplemented("v8.Deserializer.prototype.constructor");
   }
 }
-export class DefaultSerializer {
+export class DefaultSerializer extends Serializer {
   constructor() {
-    notImplemented("v8.DefaultSerializer.prototype.constructor");
+    warnNotImplemented("v8.DefaultSerializer.prototype.constructor");
+    super();
   }
 }
 export class DefaultDeserializer {