diff --git a/services/wikiapiary/wikiapiary-installs.service.js b/services/wikiapiary/wikiapiary-installs.service.js
index 3aa11e110da2a..222e16c4c875a 100644
--- a/services/wikiapiary/wikiapiary-installs.service.js
+++ b/services/wikiapiary/wikiapiary-installs.service.js
@@ -1,8 +1,6 @@
-'use strict'
-
-const Joi = require('joi')
-const { metric } = require('../text-formatters')
-const { BaseJsonService, NotFound } = require('..')
+import Joi from 'joi'
+import { metric } from '../text-formatters.js'
+import { BaseJsonService, NotFound } from '../index.js'
 
 const documentation = `
   <p>
@@ -48,7 +46,7 @@ const schema = Joi.object({
  *
  * {@link https://www.mediawiki.org/wiki/Manual:Extensions MediaWiki Extensions Manual}
  */
-module.exports = class WikiapiaryInstalls extends BaseJsonService {
+export default class WikiapiaryInstalls extends BaseJsonService {
   static category = 'downloads'
   static route = {
     base: 'wikiapiary',
diff --git a/services/wikiapiary/wikiapiary-installs.tester.js b/services/wikiapiary/wikiapiary-installs.tester.js
index fee38c87645f1..878ec756dd163 100644
--- a/services/wikiapiary/wikiapiary-installs.tester.js
+++ b/services/wikiapiary/wikiapiary-installs.tester.js
@@ -1,7 +1,6 @@
-'use strict'
-
-const t = (module.exports = require('../tester').createServiceTester())
-const { isMetric } = require('../test-validators')
+import { createServiceTester } from '../tester.js'
+import { isMetric } from '../test-validators.js'
+export const t = await createServiceTester()
 
 t.create('Extension')
   .get('/extension/installs/ParserFunctions.json')