diff --git a/resspublica/federalInitiativesFeeds.py b/resspublica/federalInitiativesFeeds.py
index 42d1f39..638e919 100644
--- a/resspublica/federalInitiativesFeeds.py
+++ b/resspublica/federalInitiativesFeeds.py
@@ -38,7 +38,8 @@ def generateFederalFeed(CACHE):
     FEDERAL_DB_PATH = CACHE / "federalInitiatives.json"
     db = TinyDB(FEDERAL_DB_PATH)
     q = Query()
-
+    
+    lastUpdateTime = "0000-00-00"
     for entry in data:
         logger.debug(f"Popular initiative {getValue(entry, "title_fr")}")
         item = {
@@ -177,6 +178,7 @@ def generateFederalFeed(CACHE):
             # Constitutional change
             item["text"] += getValue(entry, "text_" + lang)
 
+            lastUpdateTime = max(lastUpdateTime, item["date"].isoformat())
             feeds[lang].append(copy.deepcopy(item))
 
     logging.info("Parsed query. Generating feeds...")
@@ -186,6 +188,7 @@ def generateFederalFeed(CACHE):
         "initiativesPopulairesFederales",
         "fr",
         ["rss", "atom"],
+        lastUpdateTime,
         feeds["fr"]
     )
     
@@ -195,6 +198,7 @@ def generateFederalFeed(CACHE):
         "eidgenossischVolksinitiativen",
         "de",
         ["rss", "atom"],
+        lastUpdateTime,
         feeds["de"]
     )
     
@@ -204,5 +208,6 @@ def generateFederalFeed(CACHE):
         "iniziativePopolariFederali",
         "it",
         ["rss", "atom"],
+        lastUpdateTime,
         feeds["it"]
     )
diff --git a/resspublica/utils.py b/resspublica/utils.py
index 605d5b3..3ce42f6 100644
--- a/resspublica/utils.py
+++ b/resspublica/utils.py
@@ -6,9 +6,8 @@ from zoneinfo import ZoneInfo
 import logging
 logger = logging.getLogger("resspublica")
 
-def generateFeed(title, description, fileName, language, standards, entries):
+def generateFeed(title, description, fileName, language, standards, lastUpdateTime, entries):
     logger.info(f"Generating feed {title}")
-    time = datetime.now(ZoneInfo("Europe/Zurich"))
     fg = FeedGenerator()
     fg.title(title)
     # We need to set a different link between atom and rss. As rss links are easier with feedgen we set fg.link for atom and fg.__rss_link for rss
@@ -18,7 +17,9 @@ def generateFeed(title, description, fileName, language, standards, entries):
     fg.id("https://raw.githubusercontent.com/tomasriveral/ReSSPublica/refs/heads/main/feed/atom/" + language  + "/" + fileName)
     fg.description(description)
     fg.language(language)
-    fg.updated(time)
+    if not isinstance(lastUpdateTime, datetime):
+        lastUpdateTime = datetime.fromisoformat(lastUpdateTime).replace(tzinfo=ZoneInfo("Europe/Zurich"))
+    fg.updated(lastUpdateTime)
     fg.author({'name': 'ReSSPublica'})
     fg.docs("https://github.com/tomasriveral/ReSSPublica")