diff --git a/test/config/Chain2138TestnetConfig.sol b/test/config/Chain2138TestnetConfig.sol
index 196ee85..8272e83 100644
--- a/test/config/Chain2138TestnetConfig.sol
+++ b/test/config/Chain2138TestnetConfig.sol
@@ -10,7 +10,7 @@ library Chain2138TestnetConfig {
     uint256 public constant CHAIN_ID = 2138;
     string public constant NETWORK_NAME = "Defi Oracle Meta Testnet";
     /// @dev Default public RPC from pr-workspace/chains/_data/chains/eip155-2138.json; use LAN/staging in CI as needed.
-    string public constant RPC_URL = "${RPC_URL_2138:-https://rpc.public-2138.defi-oracle.io}";
+    string public constant RPC_URL = "https://rpc.public-2138.defi-oracle.io";
     string public constant EXPLORER_URL = "https://public-2138.defi-oracle.io";
 
     uint256 public constant GAS_LIMIT = 8_000_000;