diff --git a/requirements.txt b/requirements.txt
index 9694ac3c6..aca4e980b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ olefile==0.47
 Pillow==11.1.0
 vobject==0.9.6.1
 msglite==0.30.0
-icalendar==5.0.12
+icalendar==6.3.1
 
 cryptography==44.0.2
 requests[security]==2.32.3