diff --git a/requirements/base.txt b/requirements/base.txt
index 570fbd3..f9a2015 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -11,6 +11,6 @@ python-postmark==0.6.0
 Markdown==3.5.1
 Pillow==10.1.0
 raven==6.10.0
-icalendar==5.0.10
+icalendar==5.0.11
 requests==2.31.0
 arrow==1.3.0