diff --git a/requirements.txt b/requirements.txt
index e4ae491..711e65c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 google-auth==1.16.0
 google-api-python-client==1.8.4
-icalendar==4.0.5
+icalendar==4.0.6
 pytz==2020.1
 PyYAML==5.3.1