diff --git a/requirements.txt b/requirements.txt
index 2f3cac38b..f03458af1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ requests==2.31.0
 six==1.16.0
 webdavclient3==3.14.6
 whitenoise==6.6.0
-icalendar==5.0.7
+icalendar==5.0.11
 pyyaml==6.0.1
 uritemplate==4.1.1
 beautifulsoup4==4.12.2