diff --git a/requirements.txt b/requirements.txt
index be4eba1..cb12347 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-icalendar>=6.1.0
+icalendar>=7.1.0
 tzdata
 click
diff --git a/test-requirements.txt b/test-requirements.txt
index e295ade..0959060 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,6 +1,6 @@
 pytest
 restructuredtext-lint
 pygments
-icalendar>=5.0.11
+icalendar>=7.1.0
 pytz
 pytest_click