diff --git a/requirements.txt b/requirements.txt
index 70d6a71..d6604fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,3 +3,4 @@ pre-commit==2.20.0
 aiohttp==3.8.4
 icalendar==5.0.11
 recurring-ical-events==2.1.2
+aiosmtplib==3.0.1