diff --git a/nextcloud_mcp_server/client/calendar.py b/nextcloud_mcp_server/client/calendar.py
index 3a4cc1a..03b47a9 100644
--- a/nextcloud_mcp_server/client/calendar.py
+++ b/nextcloud_mcp_server/client/calendar.py
@@ -36,7 +36,7 @@ class CalendarClient:
             url=f"{base_url}/remote.php/dav/",
             username=username,
             auth=auth,
-            ssl_verify_cert=get_nextcloud_ssl_verify(),
+            ssl_verify_cert=get_nextcloud_ssl_verify(),  # type: ignore[arg-type]  # caldav types say bool|str but passes through to httpx which accepts SSLContext
         )
         self._calendar_home_url = f"{base_url}/remote.php/dav/calendars/{username}/"