diff --git a/test_files/calendar.ics b/test_files/calendar.ics
index 59961e7..63eb300 100644
--- a/test_files/calendar.ics
+++ b/test_files/calendar.ics
@@ -315,9 +315,9 @@ BEGIN:VEVENT
 UID:be6dd0e3ca1bb6a44783ade61056b12c57325b5f
 DTSTAMP:20230819T152822Z
 DTSTART;TZID=/freeassociation.sourceforge.net/Europe/Berlin:
- 20250131T080000
+ 20260131T080000
 DTEND;TZID=/freeassociation.sourceforge.net/Europe/Berlin:
- 20250131T100000
+ 20260131T100000
 SEQUENCE:3
 SUMMARY:do laundry
 TRANSP:OPAQUE
@@ -328,8 +328,8 @@ END:VEVENT
 BEGIN:VEVENT
 UID:ba584c4a-5369-4d9e-9b6f-157a3abda095
 DTSTAMP:20230917T103047Z
-DTSTART;VALUE=DATE:20250301
-DTEND;VALUE=DATE:20250308
+DTSTART;VALUE=DATE:20260301
+DTEND;VALUE=DATE:20260308
 SEQUENCE:2
 SUMMARY:vacation
 TRANSP:OPAQUE
diff --git a/test_files/received_ical.ics b/test_files/received_ical.ics
index 89a80af..07f27da 100644
--- a/test_files/received_ical.ics
+++ b/test_files/received_ical.ics
@@ -4,14 +4,14 @@ PRODID:-//www.example.com//iCal 4.0.3//EN
 METHOD:PUBLISH
 CALSCALE:GREGORIAN
 BEGIN:VEVENT
-CREATED:20240102T105004
+CREATED:20260102T105004
 UID:ical-19709628-example-com
-DTSTART;VALUE=DATE:20240622T000000
-DTEND;VALUE=DATE:20240711T000000
+DTSTART;VALUE=DATE:20260622T000000
+DTEND;VALUE=DATE:20260711T000000
 TRANSP:TRANSPARENT
 SUMMARY:vacation (approved)
-DESCRIPTION:vacation\n\nstatus: approved\nworkdays: 13,0\n\nentered by: John Doe\nentry date: Tue, 2024-01-02, 10:09 AM\napproved on: -\n\n\n\nPowered by example.com\n
-DTSTAMP:20240102T105004
+DESCRIPTION:vacation\n\nstatus: approved\nworkdays: 13,0\n\nentered by: John Doe\nentry date: Tue, 2026-01-02, 10:09 AM\napproved on: -\n\n\n\nPowered by example.com\n
+DTSTAMP:20260102T105004
 CATEGORIES:example.com
 X-MICROSOFT-CDO-BUSYSTATUS:OOF
 SEQUENCE:8