diff --git a/src/dev/build/tasks/nodejs_modules/clean_client_modules_on_dll_task.js b/src/dev/build/tasks/nodejs_modules/clean_client_modules_on_dll_task.js
index 3ae7d33d24d6..5c0462ce86fa 100644
--- a/src/dev/build/tasks/nodejs_modules/clean_client_modules_on_dll_task.js
+++ b/src/dev/build/tasks/nodejs_modules/clean_client_modules_on_dll_task.js
@@ -49,9 +49,18 @@ export const CleanClientModulesOnDLLTask = {
       `${baseDir}/src/plugins/*/server/index.js`,
       `!${baseDir}/src/plugins/**/public`
     ]);
+    const discoveredNewPlatformXpackPlugins = await globby([
+      `${baseDir}/x-pack/plugins/*/server/index.js`,
+      `!${baseDir}/x-pack/plugins/**/public`
+    ]);
 
     // Compose all the needed entries
-    const serverEntries = [ ...mainCodeEntries, ...discoveredLegacyCorePluginEntries, ...discoveredPluginEntries];
+    const serverEntries = [
+      ...mainCodeEntries,
+      ...discoveredLegacyCorePluginEntries,
+      ...discoveredPluginEntries,
+      ...discoveredNewPlatformXpackPlugins
+    ];
 
     // Get the dependencies found searching through the server
     // side code entries that were provided