diff --git a/blockchain/blockchain.py b/blockchain/blockchain.py
index 0d99ca4..f93ce37 100755
--- a/blockchain/blockchain.py
+++ b/blockchain/blockchain.py
@@ -64,13 +64,24 @@ def register_node(self, node_url):
         #Checking node_url has valid format
         parsed_url = urlparse(node_url)
         if parsed_url.netloc:
-            self.nodes.add(parsed_url.netloc)
+            new_url = parsed_url.netloc
         elif parsed_url.path:
             # Accepts an URL without scheme like '192.168.0.5:5000'.
-            self.nodes.add(parsed_url.path)
+            new_url = parsed_url.path
         else:
             raise ValueError('Invalid URL')
 
+        if new_url in self.nodes:
+            return
+
+        self.nodes.add(new_url)
+
+        for node in self.nodes:
+            try:
+                requests.post(f'http://{node}/nodes/register', data={'nodes': new_url})
+            except Exception as e:
+                print(e)
+
 
     def verify_transaction_signature(self, sender_address, signature, transaction):
         """