diff --git a/src/calendarUtil.js b/src/calendarUtil.js
index 12eda46..651932f 100644
--- a/src/calendarUtil.js
+++ b/src/calendarUtil.js
@@ -1,5 +1,4 @@
-import ICAL from './lib/ical.js';
-import './lib/ical.timezones.js';
+import ICAL from './lib/ical.timezones';
 import fs from 'fs';
 import path from 'path';
 import axios from 'axios';
diff --git a/src/lib/ical.js b/src/lib/ical.js
index 2f7b937..e44a3f3 100644
--- a/src/lib/ical.js
+++ b/src/lib/ical.js
@@ -8,7 +8,7 @@
 /* jshint ignore:start */
 if (typeof module === 'object') {
   // CommonJS, where exports may be different each time.
-  ICAL = module.exports;
+  var ICAL = module.exports;
 } else if (typeof ICAL !== 'object') {/* istanbul ignore next */
   /** @ignore */
   this.ICAL = {};
diff --git a/test/calendarUtil.test.js b/test/calendarUtil.test.js
index f5380d7..91db03b 100644
--- a/test/calendarUtil.test.js
+++ b/test/calendarUtil.test.js
@@ -1,4 +1,4 @@
-import ICAL from 'ical.js';
+import ICAL from '../src/lib/ical.timezones';
 import fs from 'fs';
 import axios from 'axios';
 
diff --git a/test/test_calendars/eat_time_zone_event.ics b/test/test_calendars/eat_time_zone_event.ics
index efe9a67..1b5a8f1 100644
--- a/test/test_calendars/eat_time_zone_event.ics
+++ b/test/test_calendars/eat_time_zone_event.ics
@@ -3,9 +3,9 @@ NAME:EAT Event
 VERSION:2.0
 BEGIN:VEVENT
 UID:20231108T090000+0300-001@example.com
-DTSTAMP:20231108T090000+0300
-DTSTART:20231108T090000+0300
-DTEND:20231108T100000+0300
+DTSTAMP:20231101T090000+03:00
+DTSTART:20231108T090000+03:00
+DTEND:20231108T100000+03:00
 SUMMARY:EAT Event
 END:VEVENT
-END:VCALENDAR
\ No newline at end of file
+END:VCALENDAR