diff --git a/DEPENDENCIES.md b/DEPENDENCIES.md
index fd7561a2a96f0..ac30ca2d466dd 100644
--- a/DEPENDENCIES.md
+++ b/DEPENDENCIES.md
@@ -190,9 +190,9 @@ graph LR;
   npmcli-config-->npmcli-eslint-config["@npmcli/eslint-config"];
   npmcli-config-->npmcli-map-workspaces["@npmcli/map-workspaces"];
   npmcli-config-->npmcli-mock-globals["@npmcli/mock-globals"];
+  npmcli-config-->npmcli-package-json["@npmcli/package-json"];
   npmcli-config-->npmcli-template-oss["@npmcli/template-oss"];
   npmcli-config-->proc-log;
-  npmcli-config-->read-package-json-fast;
   npmcli-config-->semver;
   npmcli-docs-->ignore-walk;
   npmcli-docs-->npmcli-eslint-config["@npmcli/eslint-config"];
@@ -622,9 +622,9 @@ graph LR;
   npmcli-config-->npmcli-eslint-config["@npmcli/eslint-config"];
   npmcli-config-->npmcli-map-workspaces["@npmcli/map-workspaces"];
   npmcli-config-->npmcli-mock-globals["@npmcli/mock-globals"];
+  npmcli-config-->npmcli-package-json["@npmcli/package-json"];
   npmcli-config-->npmcli-template-oss["@npmcli/template-oss"];
   npmcli-config-->proc-log;
-  npmcli-config-->read-package-json-fast;
   npmcli-config-->semver;
   npmcli-config-->tap;
   npmcli-config-->walk-up-path;
@@ -797,9 +797,9 @@ packages higher up the chain.
  - @npmcli/arborist
  - @npmcli/metavuln-calculator
  - pacote, libnpmversion
- - @npmcli/run-script, libnpmhook, libnpmorg, libnpmsearch, libnpmteam, init-package-json, npm-profile
+ - @npmcli/run-script, @npmcli/config, libnpmhook, libnpmorg, libnpmsearch, libnpmteam, init-package-json, npm-profile
  - @npmcli/package-json, npm-registry-fetch
- - @npmcli/git, make-fetch-happen, @npmcli/config
+ - @npmcli/git, make-fetch-happen
  - @npmcli/installed-package-contents, @npmcli/map-workspaces, cacache, npm-pick-manifest, promzard
  - @npmcli/docs, @npmcli/fs, npm-bundled, read-package-json-fast, unique-filename, npm-install-checks, npm-package-arg, normalize-package-data, npm-packlist, bin-links, nopt, parse-conflict-json, @npmcli/mock-globals, read
  - @npmcli/eslint-config, @npmcli/template-oss, ignore-walk, semver, npm-normalize-package-bin, @npmcli/name-from-folder, json-parse-even-better-errors, fs-minipass, ssri, unique-slug, @npmcli/promise-spawn, hosted-git-info, proc-log, validate-npm-package-name, @npmcli/node-gyp, @npmcli/redact, @npmcli/agent, minipass-fetch, @npmcli/query, cmd-shim, read-cmd-shim, write-file-atomic, abbrev, proggy, minify-registry-metadata, ini, mute-stream, npm-audit-report, npm-user-validate
diff --git a/package-lock.json b/package-lock.json
index 40b49770f076e..42f12893d9b73 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15874,11 +15874,11 @@
       "license": "ISC",
       "dependencies": {
         "@npmcli/map-workspaces": "^3.0.2",
+        "@npmcli/package-json": "^5.1.1",
         "ci-info": "^4.0.0",
         "ini": "^4.1.2",
         "nopt": "^7.2.1",
         "proc-log": "^4.2.0",
-        "read-package-json-fast": "^3.0.2",
         "semver": "^7.3.5",
         "walk-up-path": "^3.0.1"
       },
diff --git a/workspaces/config/lib/index.js b/workspaces/config/lib/index.js
index e786828589aaf..4aa76d8e2d9a2 100644
--- a/workspaces/config/lib/index.js
+++ b/workspaces/config/lib/index.js
@@ -669,12 +669,12 @@ class Config {
       }
 
       if (this.localPrefix && hasPackageJson) {
-        const rpj = require('read-package-json-fast')
+        const pkgJson = require('@npmcli/package-json')
         // if we already set localPrefix but this dir has a package.json
         // then we need to see if `p` is a workspace root by reading its package.json
         // however, if reading it fails then we should just move on
-        const pkg = await rpj(resolve(p, 'package.json')).catch(() => false)
-        if (!pkg) {
+        const { content: pkg } = await pkgJson.normalize(p).catch(() => ({ content: {} }))
+        if (!pkg?.workspaces) {
           continue
         }
 
diff --git a/workspaces/config/package.json b/workspaces/config/package.json
index 7c4e56b3efcbf..294f160e23a3a 100644
--- a/workspaces/config/package.json
+++ b/workspaces/config/package.json
@@ -37,11 +37,11 @@
   },
   "dependencies": {
     "@npmcli/map-workspaces": "^3.0.2",
+    "@npmcli/package-json": "^5.1.1",
     "ci-info": "^4.0.0",
     "ini": "^4.1.2",
     "nopt": "^7.2.1",
     "proc-log": "^4.2.0",
-    "read-package-json-fast": "^3.0.2",
     "semver": "^7.3.5",
     "walk-up-path": "^3.0.1"
   },