diff --git a/package.json b/package.json
index 86aca531..ff44bcdb 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,6 @@
     }
   },
   "dependencies": {
-    "@package-json/types": "^0.0.12",
     "@typescript-eslint/types": "^8.56.0",
     "comment-parser": "^1.4.1",
     "debug": "^4.4.1",
diff --git a/src/rules/no-duplicates.ts b/src/rules/no-duplicates.ts
index 473eb477..d8abbb38 100644
--- a/src/rules/no-duplicates.ts
+++ b/src/rules/no-duplicates.ts
@@ -1,9 +1,8 @@
-import type { PackageJson } from '@package-json/types'
 import type { TSESLint, TSESTree } from '@typescript-eslint/utils'
 import * as semver from 'semver'
 
 import { cjsRequire } from '../require.js'
-import type { RuleContext } from '../types.js'
+import type { PackageJson, RuleContext } from '../types.js'
 import { createRule, lazy, resolve } from '../utils/index.js'
 
 // a user might set prefer-inline but not have a supporting TypeScript version.  Flow does not support inline types so this should fail in that case as well.
diff --git a/src/rules/no-extraneous-dependencies.ts b/src/rules/no-extraneous-dependencies.ts
index 87370ed8..269bba47 100644
--- a/src/rules/no-extraneous-dependencies.ts
+++ b/src/rules/no-extraneous-dependencies.ts
@@ -1,11 +1,10 @@
 import fs from 'node:fs'
 import path from 'node:path'
 
-import type { PackageJson } from '@package-json/types'
 import type { TSESTree } from '@typescript-eslint/utils'
 import { minimatch } from 'minimatch'
 
-import type { RuleContext } from '../types.js'
+import type { PackageJson, RuleContext } from '../types.js'
 import {
   createRule,
   moduleVisitor,
@@ -46,8 +45,7 @@ function extractDepFields(pkg: PackageJson) {
     devDependencies: pkg.devDependencies || {},
     optionalDependencies: pkg.optionalDependencies || {},
     peerDependencies: pkg.peerDependencies || {},
-    // BundledDeps should be in the form of an array, but object notation is also supported by
-    // `npm`, so we convert it to an array if it is an object
+    // bundleDependencies is an array per npm spec; this rule also accepts an object form for backward compatibility, which is not part of the npm spec
     bundledDependencies: arrayOrKeys(
       pkg.bundleDependencies || pkg.bundledDependencies || [],
     ),
diff --git a/src/types.ts b/src/types.ts
index 51918cec..2b69c45a 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -169,3 +169,23 @@ export interface NormalizedCacheSettings
   extends NonNullable<ImportSettings['cache']> {
   lifetime: number
 }
+
+/**
+ * Minimal subset of package.json fields used by this plugin.
+ * Defined inline to avoid a runtime dependency solely for type information.
+ */
+export interface PackageJson {
+  name?: string
+  version?: string
+  private?: boolean
+  main?: string
+  bin?: string | Record<string, string>
+  browser?: string | Record<string, string | false>
+  dependencies?: Record<string, string>
+  devDependencies?: Record<string, string>
+  optionalDependencies?: Record<string, string>
+  peerDependencies?: Record<string, string>
+  /** Array form per npm spec; object form is non-standard but intentionally supported by this rule */
+  bundleDependencies?: string[] | Record<string, string>
+  bundledDependencies?: string[] | Record<string, string>
+}
diff --git a/src/utils/read-pkg-up.ts b/src/utils/read-pkg-up.ts
index 52d5bd68..290966dd 100644
--- a/src/utils/read-pkg-up.ts
+++ b/src/utils/read-pkg-up.ts
@@ -1,6 +1,6 @@
 import fs from 'node:fs'
 
-import type { PackageJson } from '@package-json/types'
+import type { PackageJson } from '../types.js'
 
 import { pkgUp } from './pkg-up.js'
 
diff --git a/yarn.lock b/yarn.lock
index ab290a40..e66f2604 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3224,13 +3224,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@package-json/types@npm:^0.0.12":
-  version: 0.0.12
-  resolution: "@package-json/types@npm:0.0.12"
-  checksum: 10c0/d9bba086efe7b9901f02f1cff7a68ab23269aeddfb7ee92a16930e219f705bfc188b9fec2dd47265033dbda45ed1514d8a46f46363f38f1ad56bc993754126da
-  languageName: node
-  linkType: hard
-
 "@pkgjs/parseargs@npm:^0.11.0":
   version: 0.11.0
   resolution: "@pkgjs/parseargs@npm:0.11.0"
@@ -6073,7 +6066,6 @@ __metadata:
     "@commitlint/cli": "npm:^19.8.1"
     "@eslint/import-test-order-redirect-scoped": "link:./test/fixtures/order-redirect-scoped"
     "@eslint/js": "npm:^9.29.0"
-    "@package-json/types": "npm:^0.0.12"
     "@swc-node/jest": "npm:^1.8.13"
     "@swc/core": "npm:^1.12.7"
     "@swc/helpers": "npm:^0.5.17"