diff --git a/core/paginator/package.json b/core/paginator/package.json
index de0cecfcd05..b6eef895802 100644
--- a/core/paginator/package.json
+++ b/core/paginator/package.json
@@ -34,7 +34,6 @@
   "author": "Google Inc.",
   "license": "Apache-2.0",
   "devDependencies": {
-    "@types/extend": "^3.0.4",
     "@types/mocha": "^10.0.10",
     "@types/node": "^22.13.8",
     "@types/proxyquire": "^1.3.31",
@@ -54,9 +53,6 @@
     "typescript": "^5.8.2",
     "uuid": "^11.1.0"
   },
-  "dependencies": {
-    "extend": "^3.0.2"
-  },
   "engines": {
     "node": ">=18"
   },
diff --git a/core/paginator/src/index.ts b/core/paginator/src/index.ts
index dd5f569840c..fa321c0b315 100644
--- a/core/paginator/src/index.ts
+++ b/core/paginator/src/index.ts
@@ -18,7 +18,6 @@
  * @module common/paginator
  */
 
-import * as extend from 'extend';
 import {TransformOptions} from 'stream';
 import {ResourceStream} from './resource-stream';
 
@@ -157,7 +156,7 @@ export class Paginator {
     }
 
     if (typeof query === 'object') {
-      query = extend<{}, ParsedArguments>(true, {}, query) as ParsedArguments;
+      query = structuredClone(query);
 
       // Check if the user only asked for a certain amount of results.
       if (query.maxResults && typeof query.maxResults === 'number') {
@@ -187,11 +186,7 @@ export class Paginator {
       callback,
     } as ParsedArguments;
 
-    parsedArguments.streamOptions = extend<{}, ParsedArguments>(
-      true,
-      {},
-      parsedArguments.query as ParsedArguments,
-    );
+    parsedArguments.streamOptions = structuredClone(parsedArguments.query);
     delete parsedArguments.streamOptions.autoPaginate;
     delete parsedArguments.streamOptions.maxResults;
     delete parsedArguments.streamOptions.pageSize;