diff --git a/requirements.txt b/requirements.txt
index 1fc160dfd..e34c51312 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ requests==2.32.4
 six==1.16.0
 webdavclient3==3.14.6
 whitenoise==6.8.2
-icalendar==6.1.0
+icalendar==6.3.1
 pyyaml==6.0.2
 uritemplate==4.1.1
 beautifulsoup4==4.12.3