diff --git a/package-lock.json b/package-lock.json
index 53afda499..5eb61c15d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -41,7 +41,6 @@
         "mkdirp": "^3.0.0",
         "mz": "^2.7.0",
         "progress": "^2.0.3",
-        "read-package-up": "^11.0.0",
         "semver": "7.7.2",
         "string-argv": "0.3.1",
         "supports-color": "^8.1.1",
@@ -5890,6 +5889,7 @@
       "resolved": "https://registry.npmjs.org/index-to-position/-/index-to-position-0.1.2.tgz",
       "integrity": "sha512-MWDKS3AS1bGCHLBA2VLImJz42f7bJh8wQsTGCzI3j519/CASStoDONUBVz2I/VID0MpiX3SGSnbOD2xUalbE5g==",
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=18"
       },
@@ -8469,6 +8469,7 @@
       "resolved": "https://registry.npmjs.org/read-package-up/-/read-package-up-11.0.0.tgz",
       "integrity": "sha512-MbgfoNPANMdb4oRBNg5eqLbB2t2r+o5Ua1pNt8BqGp4I0FJZhuVSOj3PaBPni4azWuSzEdNn2evevzVmEk1ohQ==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "find-up-simple": "^1.0.0",
         "read-pkg": "^9.0.0",
@@ -8486,6 +8487,7 @@
       "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-7.0.2.tgz",
       "integrity": "sha512-puUZAUKT5m8Zzvs72XWy3HtvVbTWljRE66cP60bxJzAqf2DgICo7lYTY2IHUmLnNpjYvw5bvmoHvPc0QO2a62w==",
       "license": "ISC",
+      "peer": true,
       "dependencies": {
         "lru-cache": "^10.0.1"
       },
@@ -8497,13 +8499,15 @@
       "version": "10.4.3",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.4.3.tgz",
       "integrity": "sha512-JNAzZcXrCt42VGLuYz0zfAzDfAvJWW6AfYlDBQyDV5DClI2m5sAmK+OIO7s59XfsRsWHp02jAJrRadPRGTt6SQ==",
-      "license": "ISC"
+      "license": "ISC",
+      "peer": true
     },
     "node_modules/read-package-up/node_modules/normalize-package-data": {
       "version": "6.0.2",
       "resolved": "https://registry.npmjs.org/normalize-package-data/-/normalize-package-data-6.0.2.tgz",
       "integrity": "sha512-V6gygoYb/5EmNI+MEGrWkC+e6+Rr7mTmfHrxDbLzxQogBkgzo76rkok0Am6thgSF7Mv2nLOajAJj5vDJZEFn7g==",
       "license": "BSD-2-Clause",
+      "peer": true,
       "dependencies": {
         "hosted-git-info": "^7.0.0",
         "semver": "^7.3.5",
@@ -8518,6 +8522,7 @@
       "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-8.1.0.tgz",
       "integrity": "sha512-rum1bPifK5SSar35Z6EKZuYPJx85pkNaFrxBK3mwdfSJ1/WKbYrjoW/zTPSjRRamfmVX1ACBIdFAO0VRErW/EA==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.22.13",
         "index-to-position": "^0.1.2",
@@ -8535,6 +8540,7 @@
       "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-9.0.1.tgz",
       "integrity": "sha512-9viLL4/n1BJUCT1NXVTdS1jtm80yDEgR5T4yCelII49Mbj0v1rZdKqj7zCiYdbB0CuCgdrvHcNogAKTFPBocFA==",
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/normalize-package-data": "^2.4.3",
         "normalize-package-data": "^6.0.0",
@@ -10283,6 +10289,7 @@
       "resolved": "https://registry.npmjs.org/unicorn-magic/-/unicorn-magic-0.1.0.tgz",
       "integrity": "sha512-lRfVq8fE8gz6QMBuDM6a+LO3IAzTi05H6gCVaUpir2E1Rwpo4ZUog45KpNXKC/Mn3Yb9UDuHumeFTo9iV/D9FQ==",
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=18"
       },
diff --git a/package.json b/package.json
index e0cfa6fad..ca80d45c3 100644
--- a/package.json
+++ b/package.json
@@ -250,7 +250,6 @@
     "mkdirp": "^3.0.0",
     "mz": "^2.7.0",
     "progress": "^2.0.3",
-    "read-package-up": "^11.0.0",
     "semver": "7.7.2",
     "string-argv": "0.3.1",
     "supports-color": "^8.1.1",
diff --git a/src/configuration/from_file.ts b/src/configuration/from_file.ts
index 9629e033c..a35cedd9e 100644
--- a/src/configuration/from_file.ts
+++ b/src/configuration/from_file.ts
@@ -107,24 +107,20 @@ async function loadFile(
       break
     case '.js':
       {
-        const parentPackage = await readPackageJson(filePath)
-        if (!parentPackage) {
+        logger.debug(
+          `Loading configuration file "${file}" as JavaScript based on extension`
+        )
+        const ambiguous = await import(pathToFileURL(filePath).toString())
+        if ('module.exports' in ambiguous) {
           logger.debug(
-            `Loading configuration file "${file}" as CommonJS based on absence of a parent package`
+            `Treating configuration file "${file}" as CommonJS based on heuristics`
           )
-          // eslint-disable-next-line @typescript-eslint/no-require-imports
-          definitions = require(filePath)
-        } else if (parentPackage.type === 'module') {
-          logger.debug(
-            `Loading configuration file "${file}" as ESM based on "${parentPackage.name}" package type`
-          )
-          definitions = await import(pathToFileURL(filePath).toString())
+          definitions = ambiguous['module.exports']
         } else {
           logger.debug(
-            `Loading configuration file "${file}" as CommonJS based on "${parentPackage.name}" package type`
+            `Treating configuration file "${file}" as ESM based on heuristics`
           )
-          // eslint-disable-next-line @typescript-eslint/no-require-imports
-          definitions = require(filePath)
+          definitions = ambiguous
         }
       }
       break
@@ -136,9 +132,3 @@ async function loadFile(
   }
   return definitions
 }
-
-async function readPackageJson(filePath: string) {
-  const { readPackageUp } = await import('read-package-up')
-  const parentPackage = await readPackageUp({ cwd: path.dirname(filePath) })
-  return parentPackage?.packageJson
-}