diff --git a/config/bsc-config.js b/config/bsc-config.js
index 52d0f11..c887f84 100644
--- a/config/bsc-config.js
+++ b/config/bsc-config.js
@@ -81,7 +81,7 @@ module.exports = {
         DodoNftErc1155: "0xdC9224cbc4B1826Bb74fF383FF1CE94DE1F56119",
 
         DODONFTRegistry: "0x2c0Dd764A0bE8A7e747Cb0765E268d576edce31a",
-        DODONFTProxy: "0x4852394EcC099f13bdC44764FA34dEB26D8131fa",
+        DODONFTProxy: "0xb9c408574393487BFb95c0E7E94f0D76E1e6fCde",
 
         //================= DropsV1 =================
         // MysteryBoxV1: "0xc25286ef3BaE3f6Fe2d6d0A6e2acAd0301AF97b8", //波老师
diff --git a/contracts/SmartRoute/proxies/DODONFTProxy.sol b/contracts/SmartRoute/proxies/DODONFTProxy.sol
index 1453103..d6e9011 100644
--- a/contracts/SmartRoute/proxies/DODONFTProxy.sol
+++ b/contracts/SmartRoute/proxies/DODONFTProxy.sol
@@ -39,8 +39,8 @@ contract DODONFTProxy is ReentrancyGuard, InitializableOwnable {
     address public immutable _DODO_APPROVE_PROXY_;
     address public immutable _CLONE_FACTORY_;
     address public immutable _NFT_REGISTY_;
-    address public immutable _DEFAULT_MAINTAINER_;
-    
+
+    address public _DEFAULT_MAINTAINER_;
     address public _MT_FEE_RATE_MODEL_;
     address public _VAULT_TEMPLATE_;
     address public _FRAG_TEMPLATE_;
@@ -53,6 +53,7 @@ contract DODONFTProxy is ReentrancyGuard, InitializableOwnable {
     event ChangeDvmTemplate(address newDvmTemplate);
     event ChangeMtFeeRateTemplate(address newMtFeeRateTemplate);
     event ChangeBuyoutModel(address newBuyoutModel);
+    event ChangeMaintainer(address newMaintainer);
     event CreateNFTCollateralVault(address creator, address vault, string name, string baseURI);
     event CreateFragment(address vault, address fragment, address dvm);
     event Buyout(address from, address fragment, uint256 amount);
@@ -196,6 +197,11 @@ contract DODONFTProxy is ReentrancyGuard, InitializableOwnable {
         emit ChangeBuyoutModel(newBuyoutModel);
     }
 
+    function updateMaintainer(address newMaintainer) external onlyOwner {
+        _DEFAULT_MAINTAINER_ = newMaintainer;
+        emit ChangeMaintainer(newMaintainer);
+    }
+
 
     //============= Internal ================