diff --git a/src/archives/evm.json b/src/archives/evm.json
index af9a84a..16fe4b7 100644
--- a/src/archives/evm.json
+++ b/src/archives/evm.json
@@ -1506,7 +1506,7 @@
       ]
     },
     {
-      "chainId": null,
+      "chainId": 161221135,
       "chainName": "Plume Testnet",
       "isTestnet": true,
       "network": "plume-testnet",
@@ -2014,4 +2014,4 @@
       ]
     }
   ]
-}
\ No newline at end of file
+}