diff --git a/CHANGES.rst b/CHANGES.rst
index 56e0a46b479085d590092eee8f9a9b32c66bef31..d01ded2dbf0b9428d411013f691f7a591281bca3 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -161,6 +161,9 @@ Node
   kernel>"}`` to produce the origination proof needed to originate a
   smart rollup.
 
+- Updated the built-in network alias for Mumbainet (``--network mumbainet``).
+  The new alias matches the relaunch of Mumbainet with the protocol `PtMumbai2`.
+
 Client
 ------
 
diff --git a/src/lib_node_config/config_file.ml b/src/lib_node_config/config_file.ml
index 98d1b14b1bed4c7272f881bd2354587c7a2c6baf..28da064dde3e82568d6001be1cea04fcf8ef29ab 100644
--- a/src/lib_node_config/config_file.ml
+++ b/src/lib_node_config/config_file.ml
@@ -208,10 +208,10 @@ let blockchain_network_mumbainet =
   make_blockchain_network
     ~alias:"mumbainet"
     {
-      time = Time.Protocol.of_notation_exn "2023-01-19T15:00:00Z";
+      time = Time.Protocol.of_notation_exn "2023-03-09T15:00:00Z";
       block =
         Block_hash.of_b58check_exn
-          "BMVeyjhT4yd421XJAYcB54hm54CwGqkV6tCzkJ8VpHPVch6Mkx6";
+          "BLytf7aG27Ca4xZ8cG4otofaUQfUA9TdULvHC3L9fToPHBcPKDV";
       protocol =
         Protocol_hash.of_b58check_exn
           "Ps9mPmXaRzmzk35gbAYNCAw6UXdE2qoABTHbN2oEEc1qM7CwT9P";
@@ -227,10 +227,10 @@ let blockchain_network_mumbainet =
               );
             ];
       }
-    ~chain_name:"TEZOS_MUMBAINET_2023-01-19T15:00:00Z"
+    ~chain_name:"TEZOS_MUMBAINET_2023-03-09T15:00:00Z"
     ~sandboxed_chain_name:"SANDBOXED_TEZOS"
     ~default_bootstrap_peers:
-      ["mumbainet.teztnets.xyz"; "mumbainet.visualtez.com"]
+      ["mumbainet.teztnets.xyz"; "mumbainet.boot.ecadinfra.com"]
 
 let blockchain_network_sandbox =
   make_blockchain_network