diff --git a/projects/hello-world/container/config.json b/projects/hello-world/container/config.json
index 1a9575a..7e1f825 100644
--- a/projects/hello-world/container/config.json
+++ b/projects/hello-world/container/config.json
@@ -6,7 +6,7 @@
     "chain": {
         "enabled": true,
         "trail_head_blocks": 0,
-        "rpc_url": "https://mainnet.base.org/",
+        "rpc_url": "###RPC_URL###",
         "registry_address": "0x3B1554f346DFe5c482Bb4BA31b880c1C18412170",
         "wallet": {
             "max_gas_limit": 4000000,