diff --git a/main.py b/main.py
index f78036f..a0fea9a 100644
--- a/main.py
+++ b/main.py
@@ -8,10 +8,12 @@ from bs4 import BeautifulSoup
 
 
 URL_TO_MONITOR = "https://univesp.br/vestibular"
-HASH_FILE = os.path.join("/data", "last_hash.txt")
 NTFY_URL = os.getenv("NTFY_URL")
 FLARESOLVERR_URL = os.getenv("FLARESOLVERR_URL")
 MONITOR_SELECTOR = os.getenv("MONITOR_SELECTOR", "div.conteudo")
+HASH_FILE = os.path.join("/data", "last_hash.txt")
+LAST_CHANGE_FILE = os.path.join("/data", "last_change_timestamp.txt")
+LAST_NOTIFY_FILE = os.path.join("/data", "last_staleness_notification.txt")
 
 
 def send_notification(message):
@@ -91,6 +93,10 @@ def check_for_updates():
             
             with open(HASH_FILE, 'w') as f:
                 f.write(current_hash)
+
+            # Update last change timestamp
+            with open(LAST_CHANGE_FILE, 'w') as f:
+                f.write(str(datetime.now().timestamp()))
         else:
             print(f"[{datetime.now()}] No changes found.")
     else:
@@ -98,8 +104,39 @@ def check_for_updates():
         with open(HASH_FILE, 'w') as f:
             f.write(current_hash)
         
+        # Initialize last change timestamp
+        with open(LAST_CHANGE_FILE, 'w') as f:
+            f.write(str(datetime.now().timestamp()))
+        
         return
 
+    # Check for staleness (no changes for > 7 days)
+    if os.path.exists(LAST_CHANGE_FILE):
+        try:
+            with open(LAST_CHANGE_FILE, 'r') as f:
+                last_change_ts = float(f.read().strip())
+            
+            time_since_change = datetime.now().timestamp() - last_change_ts
+            if time_since_change > 7 * 24 * 60 * 60: # 7 days in seconds
+                
+                # Check if we recently notified about this
+                should_notify = True
+                if os.path.exists(LAST_NOTIFY_FILE):
+                    with open(LAST_NOTIFY_FILE, 'r') as f:
+                        last_notify_ts = float(f.read().strip())
+                    
+                    if (datetime.now().timestamp() - last_notify_ts) < 7 * 24 * 60 * 60:
+                        should_notify = False
+                
+                if should_notify:
+                    print(f"[{datetime.now()}] ⚠️ Updates are stale (> 7 days). Sends notification.")
+                    send_notification("⚠️ No changes detected for over 7 days. Please check manually.")
+                    
+                    with open(LAST_NOTIFY_FILE, 'w') as f:
+                        f.write(str(datetime.now().timestamp()))
+        except Exception as e:
+            print(f"[{datetime.now()}] Error checking staleness: {e}")
+
 
 
 def main():