diff --git a/requirements.txt b/requirements.txt
index 97e3e42..3b1fe87 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,5 @@ PyTelegramBotAPI==3.7.6
 psycopg2-binary==2.8.6
 requests==2.25.1
 schedule==1.1.0
-icalendar~=4.0.9
\ No newline at end of file
+icalendar~=4.0.9
+idna>=3.7 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file