diff --git a/services/web/migrations/20190730093801_script_example.mjs b/services/web/migrations/20190730093801_script_example.mjs
index e4542d8508..fda971a242 100644
--- a/services/web/migrations/20190730093801_script_example.mjs
+++ b/services/web/migrations/20190730093801_script_example.mjs
@@ -8,7 +8,7 @@
  * or "hello <name>", when User.findOne() finds something.
  */
 
-import runScript from '../scripts/example/script_for_migration.js'
+import runScript from '../scripts/example/script_for_migration.mjs'
 
 const tags = []
 
diff --git a/services/web/migrations/README.md b/services/web/migrations/README.md
index e30cec744c..13a0865077 100644
--- a/services/web/migrations/README.md
+++ b/services/web/migrations/README.md
@@ -46,7 +46,7 @@ undo the changes made in `migrate`.
 #### Running scripts as a migration
 
 To run a script in a migration file, look at `migrations/20190730093801_script_example.js`, which runs the script
-`scripts/example/script_for_migration.js`. This uses a method where the script can be run standalone via `node`, or
+`scripts/example/script_for_migration.mjs`. This uses a method where the script can be run standalone via `node`, or
 through the migrations' mechanism.
 
 ### Running migrations
diff --git a/services/web/scripts/analytics/helpers/GoogleBigQueryHelper.js b/services/web/scripts/analytics/helpers/GoogleBigQueryHelper.mjs
similarity index 86%
rename from services/web/scripts/analytics/helpers/GoogleBigQueryHelper.js
rename to services/web/scripts/analytics/helpers/GoogleBigQueryHelper.mjs
index 1a79ab0329..84ff5f2caf 100644
--- a/services/web/scripts/analytics/helpers/GoogleBigQueryHelper.js
+++ b/services/web/scripts/analytics/helpers/GoogleBigQueryHelper.mjs
@@ -1,4 +1,4 @@
-const GoogleBigQuery = require('@google-cloud/bigquery').BigQuery
+import { BigQuery as GoogleBigQuery } from '@google-cloud/bigquery'
 
 let dataset = null
 
@@ -25,6 +25,6 @@ async function query(query) {
   return rows
 }
 
-module.exports = {
+export default {
   query,
 }
diff --git a/services/web/scripts/analytics/sync_group_subscription_memberships.js b/services/web/scripts/analytics/sync_group_subscription_memberships.mjs
similarity index 92%
rename from services/web/scripts/analytics/sync_group_subscription_memberships.js
rename to services/web/scripts/analytics/sync_group_subscription_memberships.mjs
index dd3f848528..fc448cc2c7 100644
--- a/services/web/scripts/analytics/sync_group_subscription_memberships.js
+++ b/services/web/scripts/analytics/sync_group_subscription_memberships.mjs
@@ -1,13 +1,13 @@
-const GoogleBigQueryHelper = require('./helpers/GoogleBigQueryHelper')
-const { Subscription } = require('../../app/src/models/Subscription')
-const { waitForDb } = require('../../app/src/infrastructure/mongodb')
-const AnalyticsManager = require('../../app/src/Features/Analytics/AnalyticsManager')
-const {
-  DeletedSubscription,
-} = require('../../app/src/models/DeletedSubscription')
-const minimist = require('minimist')
-const _ = require('lodash')
-const { ObjectId } = require('mongodb-legacy')
+import GoogleBigQueryHelper from './helpers/GoogleBigQueryHelper.mjs'
+import { Subscription } from '../../app/src/models/Subscription.js'
+import { waitForDb } from '../../app/src/infrastructure/mongodb.js'
+import AnalyticsManager from '../../app/src/Features/Analytics/AnalyticsManager.js'
+import { DeletedSubscription } from '../../app/src/models/DeletedSubscription.js'
+import minimist from 'minimist'
+import _ from 'lodash'
+import mongodb from 'mongodb-legacy'
+
+const { ObjectId } = mongodb
 
 let FETCH_LIMIT, COMMIT, VERBOSE
 
@@ -260,12 +260,11 @@ const setup = () => {
 }
 
 setup()
-main()
-  .then(() => {
-    console.error('Done.')
-    process.exit(0)
-  })
-  .catch(error => {
-    console.error({ error })
-    process.exit(1)
-  })
+try {
+  await main()
+  console.error('Done.')
+  process.exit(0)
+} catch (error) {
+  console.error({ error })
+  process.exit(1)
+}
diff --git a/services/web/scripts/delete-duplicate-splittest-versions/delete_test_dupes.js b/services/web/scripts/delete-duplicate-splittest-versions/delete_test_dupes.mjs
similarity index 95%
rename from services/web/scripts/delete-duplicate-splittest-versions/delete_test_dupes.js
rename to services/web/scripts/delete-duplicate-splittest-versions/delete_test_dupes.mjs
index 40e06f2635..b81432b3c0 100644
--- a/services/web/scripts/delete-duplicate-splittest-versions/delete_test_dupes.js
+++ b/services/web/scripts/delete-duplicate-splittest-versions/delete_test_dupes.mjs
@@ -1,5 +1,5 @@
-const { db, waitForDb } = require('../../app/src/infrastructure/mongodb')
-const minimist = require('minimist')
+import { db, waitForDb } from '../../app/src/infrastructure/mongodb.js'
+import minimist from 'minimist'
 
 const argv = minimist(process.argv.slice(2))
 const commit = argv.commit !== undefined
diff --git a/services/web/scripts/delete-orphaned-docs/delete-orphaned-docs.js b/services/web/scripts/delete-orphaned-docs/delete-orphaned-docs.mjs
similarity index 90%
rename from services/web/scripts/delete-orphaned-docs/delete-orphaned-docs.js
rename to services/web/scripts/delete-orphaned-docs/delete-orphaned-docs.mjs
index 967761672a..47252ef186 100644
--- a/services/web/scripts/delete-orphaned-docs/delete-orphaned-docs.js
+++ b/services/web/scripts/delete-orphaned-docs/delete-orphaned-docs.mjs
@@ -1,16 +1,14 @@
-'use strict'
-
-const fs = require('fs')
-const minimist = require('minimist')
-const readline = require('readline')
-
-const {
+import fs from 'fs'
+import minimist from 'minimist'
+import readline from 'readline'
+import {
   db,
   ObjectId,
   waitForDb,
-} = require('../../app/src/infrastructure/mongodb')
-const DocstoreManager =
-  require('../../app/src/Features/Docstore/DocstoreManager').promises
+} from '../../app/src/infrastructure/mongodb.js'
+import DocstoreManagerModule from '../../app/src/Features/Docstore/DocstoreManager.js'
+
+const { promises: DocstoreManager } = DocstoreManagerModule
 
 const argv = minimist(process.argv.slice(2))
 const commit = argv.commit !== undefined
diff --git a/services/web/scripts/example/script_for_migration.js b/services/web/scripts/example/script_for_migration.mjs
similarity index 62%
rename from services/web/scripts/example/script_for_migration.js
rename to services/web/scripts/example/script_for_migration.mjs
index 5ac3f826cb..ed1d288aa8 100644
--- a/services/web/scripts/example/script_for_migration.js
+++ b/services/web/scripts/example/script_for_migration.mjs
@@ -6,7 +6,9 @@
  * in the migrations directory.
  */
 
-const { User } = require('../../app/src/models/User')
+import { User } from '../../app/src/models/User.js'
+import { fileURLToPath } from 'url'
+
 // const somePackage = require('some-package')
 
 const runScript = async () => {
@@ -15,13 +17,14 @@ const runScript = async () => {
   console.log(`Hello ${name}!`)
 }
 
-if (require.main === module) {
-  runScript()
-    .then(() => process.exit())
-    .catch(err => {
-      console.error(err)
-      process.exit(1)
-    })
+if (fileURLToPath(import.meta.url) === process.argv[1]) {
+  try {
+    await runScript()
+    process.exit()
+  } catch (error) {
+    console.error(error)
+    process.exit(1)
+  }
 }
 
-module.exports = runScript
+export default runScript
diff --git a/services/web/scripts/history/clean_sl_history_data.js b/services/web/scripts/history/clean_sl_history_data.mjs
similarity index 87%
rename from services/web/scripts/history/clean_sl_history_data.js
rename to services/web/scripts/history/clean_sl_history_data.mjs
index a7497c826f..2cab756600 100644
--- a/services/web/scripts/history/clean_sl_history_data.js
+++ b/services/web/scripts/history/clean_sl_history_data.mjs
@@ -1,6 +1,9 @@
-// Increase default mongo query timeout from 1min to 1h
-process.env.MONGO_SOCKET_TIMEOUT = process.env.MONGO_SOCKET_TIMEOUT || '360000'
-const { waitForDb, db } = require('../../app/src/infrastructure/mongodb')
+import { waitForDb, db } from '../../app/src/infrastructure/mongodb.js'
+import { ensureMongoTimeout } from '../helpers/env_variable_helper.mjs'
+// Ensure default mongo query timeout has been increased 1h
+if (!process.env.MONGO_SOCKET_TIMEOUT) {
+  ensureMongoTimeout(360000)
+}
 
 async function main() {
   await checkAllProjectsAreMigrated()
diff --git a/services/web/scripts/history/migrate_ranges_support.js b/services/web/scripts/history/migrate_ranges_support.mjs
similarity index 86%
rename from services/web/scripts/history/migrate_ranges_support.js
rename to services/web/scripts/history/migrate_ranges_support.mjs
index 616c31c808..a4a769656f 100644
--- a/services/web/scripts/history/migrate_ranges_support.js
+++ b/services/web/scripts/history/migrate_ranges_support.mjs
@@ -1,6 +1,6 @@
-const HistoryRangesSupportMigration = require('../../app/src/Features/History/HistoryRangesSupportMigration')
-const { waitForDb } = require('../../app/src/infrastructure/mongodb')
-const minimist = require('minimist')
+import HistoryRangesSupportMigration from '../../app/src/Features/History/HistoryRangesSupportMigration.mjs'
+import { waitForDb } from '../../app/src/infrastructure/mongodb.js'
+import minimist from 'minimist'
 
 async function main() {
   await waitForDb()
@@ -31,7 +31,7 @@ async function main() {
 }
 
 function usage() {
-  console.error(`Usage: migrate_ranges_support.js [OPTIONS]
+  console.error(`Usage: migrate_ranges_support.mjs [OPTIONS]
 
 Options:
 
@@ -112,11 +112,10 @@ function arrayOpt(value) {
   }
 }
 
-main()
-  .then(() => {
-    process.exit(0)
-  })
-  .catch(err => {
-    console.error(err)
-    process.exit(1)
-  })
+try {
+  await main()
+  process.exit(0)
+} catch (error) {
+  console.error(error)
+  process.exit(1)
+}
diff --git a/services/web/scripts/merge_group_subscription_members.js b/services/web/scripts/merge_group_subscription_members.mjs
similarity index 86%
rename from services/web/scripts/merge_group_subscription_members.js
rename to services/web/scripts/merge_group_subscription_members.mjs
index a212d3b69a..da1cbd0f59 100644
--- a/services/web/scripts/merge_group_subscription_members.js
+++ b/services/web/scripts/merge_group_subscription_members.mjs
@@ -6,9 +6,10 @@
 // node scripts/merge_group_subscription_members \
 //  --target [targetSubscriptionId] --source [sourceSubscriptionId] --commit
 
-const { db, ObjectId, waitForDb } = require('../app/src/infrastructure/mongodb')
-const SubscriptionUpdater = require('../app/src/Features/Subscription/SubscriptionUpdater')
-const minimist = require('minimist')
+import { db, ObjectId, waitForDb } from '../app/src/infrastructure/mongodb.js'
+
+import SubscriptionUpdater from '../app/src/Features/Subscription/SubscriptionUpdater.js'
+import minimist from 'minimist'
 const argv = minimist(process.argv.slice(2), {
   string: ['target', 'source'],
   boolean: ['commit'],
@@ -93,12 +94,11 @@ async function main() {
   }
 }
 
-main()
-  .then(() => {
-    console.error('Done.')
-    process.exit(0)
-  })
-  .catch(error => {
-    console.error({ error })
-    process.exit(1)
-  })
+try {
+  await main()
+  console.error('Done.')
+  process.exit(0)
+} catch (error) {
+  console.error({ error })
+  process.exit(1)
+}
diff --git a/services/web/scripts/oauth/backfill_hashed_secrets.js b/services/web/scripts/oauth/backfill_hashed_secrets.mjs
similarity index 79%
rename from services/web/scripts/oauth/backfill_hashed_secrets.js
rename to services/web/scripts/oauth/backfill_hashed_secrets.mjs
index e5d497958e..7f09cfc7f6 100644
--- a/services/web/scripts/oauth/backfill_hashed_secrets.js
+++ b/services/web/scripts/oauth/backfill_hashed_secrets.mjs
@@ -1,11 +1,9 @@
-const {
+import {
   db,
   waitForDb,
   READ_PREFERENCE_SECONDARY,
-} = require('../../app/src/infrastructure/mongodb')
-const {
-  hashSecret,
-} = require('../../modules/oauth2-server/app/src/SecretsHelper')
+} from '../../app/src/infrastructure/mongodb.js'
+import { hashSecret } from '../../modules/oauth2-server/app/src/SecretsHelper.js'
 
 async function main() {
   await waitForDb()
@@ -38,11 +36,10 @@ async function hashSecrets(collection, field) {
   console.log(`${hashedCount} secrets hashed`)
 }
 
-main()
-  .then(() => {
-    process.exit(0)
-  })
-  .catch(err => {
-    console.error(err)
-    process.exit(1)
-  })
+try {
+  await main()
+  process.exit(0)
+} catch (error) {
+  console.error(error)
+  process.exit(1)
+}
diff --git a/services/web/scripts/oauth/create_token.js b/services/web/scripts/oauth/create_token.mjs
similarity index 85%
rename from services/web/scripts/oauth/create_token.js
rename to services/web/scripts/oauth/create_token.mjs
index 6b3af8c8e1..36dde27395 100644
--- a/services/web/scripts/oauth/create_token.js
+++ b/services/web/scripts/oauth/create_token.mjs
@@ -1,8 +1,6 @@
-const minimist = require('minimist')
-const { waitForDb, db } = require('../../app/src/infrastructure/mongodb')
-const {
-  hashSecret,
-} = require('../../modules/oauth2-server/app/src/SecretsHelper')
+import minimist from 'minimist'
+import { waitForDb, db } from '../../app/src/infrastructure/mongodb.js'
+import { hashSecret } from '../../modules/oauth2-server/app/src/SecretsHelper.js'
 
 async function main() {
   const opts = parseArgs()
@@ -91,11 +89,10 @@ Options:
 `)
 }
 
-main()
-  .then(() => {
-    process.exit(0)
-  })
-  .catch(err => {
-    console.error(err)
-    process.exit(1)
-  })
+try {
+  await main()
+  process.exit(0)
+} catch (error) {
+  console.error(error)
+  process.exit(1)
+}
diff --git a/services/web/scripts/oauth/register_client.js b/services/web/scripts/oauth/register_client.mjs
similarity index 88%
rename from services/web/scripts/oauth/register_client.js
rename to services/web/scripts/oauth/register_client.mjs
index 87fa7c0116..b14e6da659 100644
--- a/services/web/scripts/oauth/register_client.js
+++ b/services/web/scripts/oauth/register_client.mjs
@@ -1,9 +1,9 @@
-const minimist = require('minimist')
-const { ObjectId } = require('mongodb-legacy')
-const { waitForDb, db } = require('../../app/src/infrastructure/mongodb')
-const {
-  hashSecret,
-} = require('../../modules/oauth2-server/app/src/SecretsHelper')
+import minimist from 'minimist'
+import mongodb from 'mongodb-legacy'
+import { waitForDb, db } from '../../app/src/infrastructure/mongodb.js'
+import { hashSecret } from '../../modules/oauth2-server/app/src/SecretsHelper.js'
+
+const { ObjectId } = mongodb
 
 async function main() {
   const opts = parseArgs()
@@ -121,11 +121,10 @@ function toArray(value) {
   }
 }
 
-main()
-  .then(() => {
-    process.exit(0)
-  })
-  .catch(err => {
-    console.error(err)
-    process.exit(1)
-  })
+try {
+  await main()
+  process.exit(0)
+} catch (error) {
+  console.error(error)
+  process.exit(1)
+}
diff --git a/services/web/scripts/oauth/remove_client.js b/services/web/scripts/oauth/remove_client.mjs
similarity index 93%
rename from services/web/scripts/oauth/remove_client.js
rename to services/web/scripts/oauth/remove_client.mjs
index 777de91455..3cd3ae7119 100644
--- a/services/web/scripts/oauth/remove_client.js
+++ b/services/web/scripts/oauth/remove_client.mjs
@@ -1,9 +1,9 @@
-const minimist = require('minimist')
-const {
+import minimist from 'minimist'
+import {
   waitForDb,
   db,
   READ_PREFERENCE_SECONDARY,
-} = require('../../app/src/infrastructure/mongodb')
+} from '../../app/src/infrastructure/mongodb.js'
 
 async function main() {
   const opts = parseArgs()
@@ -114,11 +114,10 @@ Options:
 `)
 }
 
-main()
-  .then(() => {
-    process.exit(0)
-  })
-  .catch(err => {
-    console.error(err)
-    process.exit(1)
-  })
+try {
+  await main()
+  process.exit(0)
+} catch (error) {
+  console.error(error)
+  process.exit(1)
+}
diff --git a/services/web/scripts/purge_non_logged_in_sessions.js b/services/web/scripts/purge_non_logged_in_sessions.mjs
similarity index 88%
rename from services/web/scripts/purge_non_logged_in_sessions.js
rename to services/web/scripts/purge_non_logged_in_sessions.mjs
index 10758edc5b..21565360f9 100644
--- a/services/web/scripts/purge_non_logged_in_sessions.js
+++ b/services/web/scripts/purge_non_logged_in_sessions.mjs
@@ -1,10 +1,11 @@
-const RedisWrapper = require('@overleaf/redis-wrapper')
-const Settings = require('@overleaf/settings')
-const SessionManager = require('../app/src/Features/Authentication/SessionManager')
+import RedisWrapper from '@overleaf/redis-wrapper'
+import Settings from '@overleaf/settings'
+import SessionManager from '../app/src/Features/Authentication/SessionManager.js'
+import minimist from 'minimist'
 
 const redis = RedisWrapper.createClient(Settings.redis.websessions)
 
-const argv = require('minimist')(process.argv.slice(2), {
+const argv = minimist(process.argv.slice(2), {
   string: ['count'],
   boolean: ['dry-run', 'help'],
   alias: {
@@ -92,7 +93,9 @@ async function scanAndPurge() {
   redis.quit()
 }
 
-scanAndPurge().catch(err => {
-  console.error(err)
+try {
+  await scanAndPurge()
+} catch (error) {
+  console.error(error)
   process.exit()
-})
+}
diff --git a/services/web/scripts/recover_docs_from_redis.js b/services/web/scripts/recover_docs_from_redis.mjs
similarity index 88%
rename from services/web/scripts/recover_docs_from_redis.js
rename to services/web/scripts/recover_docs_from_redis.mjs
index 77bcf9ab11..d52c0a55ec 100644
--- a/services/web/scripts/recover_docs_from_redis.js
+++ b/services/web/scripts/recover_docs_from_redis.mjs
@@ -1,12 +1,13 @@
 // recover docs from redis where there is no doc in mongo but the project exists
 
-const minimist = require('minimist')
-const { db, waitForDb, ObjectId } = require('../app/src/infrastructure/mongodb')
-const ProjectEntityUpdateHandler = require('../app/src/Features/Project/ProjectEntityUpdateHandler')
-const ProjectEntityRestoreHandler = require('../app/src/Features/Project/ProjectEntityRestoreHandler')
-const RedisWrapper = require('@overleaf/redis-wrapper')
-const Settings = require('@overleaf/settings')
-const logger = require('@overleaf/logger')
+import minimist from 'minimist'
+
+import { db, waitForDb, ObjectId } from '../app/src/infrastructure/mongodb.js'
+import ProjectEntityUpdateHandler from '../app/src/Features/Project/ProjectEntityUpdateHandler.js'
+import ProjectEntityRestoreHandler from '../app/src/Features/Project/ProjectEntityRestoreHandler.js'
+import RedisWrapper from '@overleaf/redis-wrapper'
+import Settings from '@overleaf/settings'
+import logger from '@overleaf/logger'
 const opts = parseArgs()
 const redis = RedisWrapper.createClient(Settings.redis.web)
 
@@ -172,11 +173,10 @@ async function deleteDocFromRedis(projectId, docId) {
   await redis.srem(`DocsIn:{${projectId}}`, projectId)
 }
 
-main()
-  .then(() => {
-    process.exit(0)
-  })
-  .catch(err => {
-    console.error(err)
-    process.exit(1)
-  })
+try {
+  await main()
+  process.exit(0)
+} catch (error) {
+  console.error(error)
+  process.exit(1)
+}
diff --git a/services/web/scripts/recurly/collect_paypal_past_due_invoice.js b/services/web/scripts/recurly/collect_paypal_past_due_invoice.mjs
similarity index 86%
rename from services/web/scripts/recurly/collect_paypal_past_due_invoice.js
rename to services/web/scripts/recurly/collect_paypal_past_due_invoice.mjs
index 650285e3ac..ba07d2040e 100644
--- a/services/web/scripts/recurly/collect_paypal_past_due_invoice.js
+++ b/services/web/scripts/recurly/collect_paypal_past_due_invoice.mjs
@@ -1,9 +1,10 @@
-const RecurlyWrapper = require('../../app/src/Features/Subscription/RecurlyWrapper')
-const minimist = require('minimist')
-const logger = require('@overleaf/logger')
+import RecurlyWrapper from '../../app/src/Features/Subscription/RecurlyWrapper.js'
+import minimist from 'minimist'
+import logger from '@overleaf/logger'
+import { fileURLToPath } from 'url'
 
 const waitMs =
-  require.main === module
+  fileURLToPath(import.meta.url) === process.argv[1]
     ? timeout => new Promise(resolve => setTimeout(() => resolve(), timeout))
     : () => Promise.resolve()
 
@@ -116,16 +117,15 @@ const main = async () => {
   }
 }
 
-if (require.main === module) {
-  main()
-    .then(() => {
-      logger.info('Done.')
-      process.exit(0)
-    })
-    .catch(err => {
-      logger.error({ err }, 'Error')
-      process.exit(1)
-    })
+if (fileURLToPath(import.meta.url) === process.argv[1]) {
+  try {
+    await main()
+    logger.info('Done.')
+    process.exit(0)
+  } catch (error) {
+    logger.error({ error }, 'Error')
+    process.exit(1)
+  }
 }
 
-module.exports = { main }
+export default { main }
diff --git a/services/web/scripts/recurly/get_paypal_accounts_csv.js b/services/web/scripts/recurly/get_paypal_accounts_csv.mjs
similarity index 94%
rename from services/web/scripts/recurly/get_paypal_accounts_csv.js
rename to services/web/scripts/recurly/get_paypal_accounts_csv.mjs
index 1ca79c38ad..d94b3fe033 100644
--- a/services/web/scripts/recurly/get_paypal_accounts_csv.js
+++ b/services/web/scripts/recurly/get_paypal_accounts_csv.mjs
@@ -1,6 +1,6 @@
-const RecurlyWrapper = require('../../app/src/Features/Subscription/RecurlyWrapper')
-const async = require('async')
-const CSVParser = require('json2csv').Parser
+import RecurlyWrapper from '../../app/src/Features/Subscription/RecurlyWrapper.js'
+import async from 'async'
+import { Parser as CSVParser } from 'json2csv'
 
 const NOW = new Date()
 
diff --git a/services/web/scripts/recurly/get_recurly_group_prices.js b/services/web/scripts/recurly/get_recurly_group_prices.mjs
similarity index 81%
rename from services/web/scripts/recurly/get_recurly_group_prices.js
rename to services/web/scripts/recurly/get_recurly_group_prices.mjs
index 2d8a16d630..e00a1e4c66 100644
--- a/services/web/scripts/recurly/get_recurly_group_prices.js
+++ b/services/web/scripts/recurly/get_recurly_group_prices.mjs
@@ -2,10 +2,11 @@
 // app/templates/plans/groups.json
 //
 // Usage example:
-// node scripts/recurly/get_recurly_group_prices.js
+// node scripts/recurly/get_recurly_group_prices.mjs
 
-const recurly = require('recurly')
-const Settings = require('@overleaf/settings')
+import recurly from 'recurly'
+
+import Settings from '@overleaf/settings'
 
 const recurlySettings = Settings.apis.recurly
 const recurlyApiKey = recurlySettings ? recurlySettings.apiKey : undefined
@@ -37,11 +38,10 @@ async function main() {
   console.log(JSON.stringify(prices, undefined, 2))
 }
 
-main()
-  .then(() => {
-    process.exit(0)
-  })
-  .catch(error => {
-    console.error({ error })
-    process.exit(1)
-  })
+try {
+  await main()
+  process.exit(0)
+} catch (error) {
+  console.error({ error })
+  process.exit(1)
+}
diff --git a/services/web/scripts/refresh_institution_users.js b/services/web/scripts/refresh_institution_users.mjs
similarity index 72%
rename from services/web/scripts/refresh_institution_users.js
rename to services/web/scripts/refresh_institution_users.mjs
index 0a0555b6a1..330331b7b5 100644
--- a/services/web/scripts/refresh_institution_users.js
+++ b/services/web/scripts/refresh_institution_users.mjs
@@ -1,18 +1,11 @@
-const { waitForDb } = require('../app/src/infrastructure/mongodb')
-const minimist = require('minimist')
-const InstitutionsManager = require('../app/src/Features/Institutions/InstitutionsManager')
+import { waitForDb } from '../app/src/infrastructure/mongodb.js'
+import minimist from 'minimist'
+import InstitutionsManager from '../app/src/Features/Institutions/InstitutionsManager.js'
 
 const institutionId = parseInt(process.argv[2])
 if (isNaN(institutionId)) throw new Error('No institution id')
 console.log('Refreshing users at institution', institutionId)
 
-waitForDb()
-  .then(main)
-  .catch(err => {
-    console.error(err)
-    process.exit(1)
-  })
-
 function main() {
   const argv = minimist(process.argv.slice(2))
   if (!argv.notify) {
@@ -37,3 +30,11 @@ function main() {
     }
   )
 }
+
+try {
+  await waitForDb()
+  await main()
+} catch (error) {
+  console.error(error)
+  process.exit(1)
+}
diff --git a/services/web/test/acceptance/src/CollectPayPalPastDueInvoiceTest.mjs b/services/web/test/acceptance/src/CollectPayPalPastDueInvoiceTest.mjs
index a6256ae860..db75aa6a47 100644
--- a/services/web/test/acceptance/src/CollectPayPalPastDueInvoiceTest.mjs
+++ b/services/web/test/acceptance/src/CollectPayPalPastDueInvoiceTest.mjs
@@ -2,10 +2,12 @@ import sinon from 'sinon'
 import chai, { expect } from 'chai'
 import chaiAsPromised from 'chai-as-promised'
 import sinonChai from 'sinon-chai'
-import { main } from '../../../scripts/recurly/collect_paypal_past_due_invoice.js'
+import CollectPaypalPastDueInvoice from '../../../scripts/recurly/collect_paypal_past_due_invoice.mjs'
 import RecurlyWrapper from '../../../app/src/Features/Subscription/RecurlyWrapper.js'
 import OError from '@overleaf/o-error'
 
+const { main } = CollectPaypalPastDueInvoice
+
 chai.use(chaiAsPromised)
 chai.use(sinonChai)