diff --git a/requirements.txt b/requirements.txt
index fe50e60..08d4eba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ chromadb>=0.5,<1
 sqlalchemy>=2,<3
 aiosqlite>=0.20
 apscheduler>=3.10,<4
-caldav>=1.3,<2
+caldav>=3.2,<4
 dateparser>=1.2
 feedparser>=6
 vobject>=0.9