diff --git a/pylookyloo/api.py b/pylookyloo/api.py
index 6372ee1..6ef972a 100644
--- a/pylookyloo/api.py
+++ b/pylookyloo/api.py
@@ -494,7 +494,7 @@ def send_mail(self, tree_uuid: str, email: str = '', comment: str | None = None)
         r = self.session.post(urljoin(self.root_url, str(PurePosixPath('json', tree_uuid, 'report'))), json=to_send)
         return r.json()
 
-    def get_recent_captures(self, timestamp:str) -> list:
+    def get_recent_captures(self, timestamp:str) -> list[str]:
         '''Gets the uuids of the most recent captures
 
         :param timestamp: Timestamp of the capture