diff --git a/resspublica/main.py b/resspublica/main.py
index a92a219..d744577 100644
--- a/resspublica/main.py
+++ b/resspublica/main.py
@@ -2,7 +2,7 @@ from SPARQLWrapper import SPARQLWrapper, JSON
 from feedgen.feed import FeedGenerator
 from importlib.resources import files
 from datetime import datetime
-from datetime import datetime
+from dateutil.relativedelta import relativedelta
 from zoneinfo import ZoneInfo
 
 def getSignatureInfo(start_date_str, lang="fr"):