diff --git a/scripts/split-names-in-membership-apps.js b/scripts/split-names-in-membership-apps.js
index 93109f7..1b8cca6 100644
--- a/scripts/split-names-in-membership-apps.js
+++ b/scripts/split-names-in-membership-apps.js
@@ -1,9 +1,13 @@
 #!/usr/bin/env node
-// Script to split name field in membership application JSON files under server/data/membership-applications/
+// Script to split name field in membership application JSON files under server/data/membership-applications/ (ESM)
 // It will create backups for each modified file.
 
-const fs = require('fs')
-const path = require('path')
+import fs from 'fs'
+import path from 'path'
+import { fileURLToPath } from 'url'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
 
 const APPS_DIR = path.join(__dirname, '../server/data/membership-applications')
 
diff --git a/scripts/split-names-in-users.js b/scripts/split-names-in-users.js
index cb698bc..6634520 100644
--- a/scripts/split-names-in-users.js
+++ b/scripts/split-names-in-users.js
@@ -1,10 +1,14 @@
 #!/usr/bin/env node
-// Script: split-names-in-users.js
+// Script: split-names-in-users.js (ESM)
 // Splittet das Feld "name" in firstName und lastName für alle User in users.json, falls noch nicht vorhanden.
 // Backup wird automatisch angelegt.
 
-const fs = require('fs')
-const path = require('path')
+import fs from 'fs'
+import path from 'path'
+import { fileURLToPath } from 'url'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
 
 const usersPath = path.join(__dirname, '../server/data/users.json')
 const backupPath = usersPath + '.bak.' + new Date().toISOString().replace(/[:.]/g, '-')