diff --git a/ical-proxy/requirements.txt b/ical-proxy/requirements.txt
index eb1ce7f..9a8f760 100644
--- a/ical-proxy/requirements.txt
+++ b/ical-proxy/requirements.txt
@@ -3,7 +3,7 @@ Flask-Cors==3.0.10
 requests==2.28.1
 requests-file==1.5.1
 uWSGI==2.0.20
-icalendar==4.1.0
+icalendar==5.0.10
 cachetools==5.2.0
 recurring-ical-events==2.1.0
 python-dateutil==2.8.2