diff --git a/ipc_unix/pubsub.py b/ipc_unix/pubsub.py
index 1bae3cf..8dc776c 100644
--- a/ipc_unix/pubsub.py
+++ b/ipc_unix/pubsub.py
@@ -44,6 +44,8 @@ class Publisher:
 
     def close(self):
         self.master_socket.close()
+        for connection in self.connections:
+            connection.close()
         self.connections.clear()
 
     def accept_new_connection(self):