diff --git a/workspaces/libnpmexec/lib/index.js b/workspaces/libnpmexec/lib/index.js
index 78633a8cadb3c..37e07dd93bc62 100644
--- a/workspaces/libnpmexec/lib/index.js
+++ b/workspaces/libnpmexec/lib/index.js
@@ -1,20 +1,21 @@
 'use strict'
 
+const { dirname, resolve } = require('node:path')
+const crypto = require('node:crypto')
 const { mkdir } = require('node:fs/promises')
 const Arborist = require('@npmcli/arborist')
 const ciInfo = require('ci-info')
-const crypto = require('node:crypto')
 const { log, input } = require('proc-log')
 const npa = require('npm-package-arg')
 const pacote = require('pacote')
 const { read } = require('read')
 const semver = require('semver')
+const PackageJson = require('@npmcli/package-json')
 const { fileExists, localFileExists } = require('./file-exists.js')
 const getBinFromManifest = require('./get-bin-from-manifest.js')
 const noTTY = require('./no-tty.js')
 const runScript = require('./run-script.js')
 const isWindows = require('./is-windows.js')
-const { dirname, resolve } = require('node:path')
 
 const binPaths = []
 
@@ -293,6 +294,9 @@ const exec = async (opts) => {
       })
     }
     binPaths.push(resolve(installDir, 'node_modules/.bin'))
+    const pkgJson = await PackageJson.load(installDir)
+    pkgJson.update({ _npx: { packages } })
+    await pkgJson.save()
   }
 
   return await run()