diff --git a/cocluto/netmap.py b/cocluto/netmap.py
index bfb4559..6326e41 100644
--- a/cocluto/netmap.py
+++ b/cocluto/netmap.py
@@ -73,7 +73,7 @@ class Port(object):
     """
     name: PortName  # the unique id of the port within the machine's ports, eg 'oob', 'p48'
     machine: Machine  # the id of the machine this network port belongs to, eg 'r640b'
-    bandwidth: optional[float]  # the maximum bandwidth of the port in bits per second
+    bandwidth: float | None  # the maximum bandwidth of the port in bits per second
     net_config: 'NetConfig'
 
     def __init__(self, name: PortName, machine: Machine, net_config: 'NetConfig'):
@@ -93,7 +93,7 @@ class Port(object):
         machine_name = port_as_str[0:-(len(port_name) + 1)]
         return machine_name, port_name
 
-    def get_bandwidth(self) -> optional[float]:
+    def get_bandwidth(self) -> float | None:
         assert self.bandwidth is not None, f'failed to get the bandwith of {self}'
         return self.bandwidth
 
diff --git a/cocluto/version.py b/cocluto/version.py
index 46b981e..c9f8622 100644
--- a/cocluto/version.py
+++ b/cocluto/version.py
@@ -1,4 +1,4 @@
-__version__ = '1.0.4'
+__version__ = '1.0.41'
 
 
 class Version(object):