diff --git a/requirements/base.txt b/requirements/base.txt
index e9bb306de..744d0716a 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -12,7 +12,7 @@ djangorestframework==3.14.0
 django-redis==5.3.0
 hiredis==2.3.2
 redis==5.0.4
-icalendar==5.0.7
+icalendar==6.1.0
 dealer==2.1.0
 
 git+https://github.com/DemocracyClub/design-system.git@0.5.0