diff --git a/package-lock.json b/package-lock.json
index d2aae38..7a0a16e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "xype-resolver",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "xype-resolver",
-      "version": "1.0.0",
+      "version": "1.1.0",
       "license": "MIT",
       "devDependencies": {
         "@ryansonshine/commitizen": "^4.2.8",
diff --git a/package.json b/package.json
index 9c30122..a934eb3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xype-resolver",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "The Xype Name Resolver Library",
   "main": "./lib/index.js",
   "types": "./lib/index.d.ts",
diff --git a/src/constants.ts b/src/constants.ts
index 5b31735..88fb912 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -1,6 +1,6 @@
 export const XYPE_REGISTRY_ADDRESS = {
-  1: '0x2C1E6E5F4cd8Aa0f103e8653ea109A0b8b1aAf70',
-  5: '0x2C1E6E5F4cd8Aa0f103e8653ea109A0b8b1aAf70',
+  1: '0x5db0E9eD56EF5B3760cE7887BAf215a39dE8d61E',
+  5: '',
   11155111: '0x2C1E6E5F4cd8Aa0f103e8653ea109A0b8b1aAf70',
 } as Record<number, string>;
 
diff --git a/src/resolver.ts b/src/resolver.ts
index 1163746..c36eb70 100644
--- a/src/resolver.ts
+++ b/src/resolver.ts
@@ -25,9 +25,13 @@ export class XypeResolver {
    * Creates the XypeResolver instance with specified Web3Connection type
    *
    * @param connection A string representing RPC URL or the JsonRpcProvider object
+   * @param chainId An optional number representing the chain id
    * @returns New XypeResolver instance
    */
-  public static async init(connection: Web3Connection): Promise<XypeResolver> {
+  public static async init(
+    connection: Web3Connection,
+    chainId?: number
+  ): Promise<XypeResolver> {
     const provider =
       connection instanceof ethers.providers.JsonRpcProvider
         ? connection
@@ -35,7 +39,9 @@ export class XypeResolver {
 
     // add network support check
     const xypeRegistry = new Contract(
-      XYPE_REGISTRY_ADDRESS[Number((await provider.getNetwork()).chainId)],
+      XYPE_REGISTRY_ADDRESS[
+        chainId ? chainId : Number((await provider.getNetwork()).chainId)
+      ],
       REGISTRY_ABI,
       provider
     );
diff --git a/test/resolver.spec.ts b/test/resolver.spec.ts
index 53ee335..73ce379 100644
--- a/test/resolver.spec.ts
+++ b/test/resolver.spec.ts
@@ -20,6 +20,12 @@ describe('XypeResolver', () => {
 
       expect((xypeResolver = await XypeResolver.init(provider)));
       expect((xypeResolver = await XypeResolver.init(PUBLIC_RPC_NODES[0])));
+      expect(
+        (xypeResolver = await XypeResolver.init(
+          provider,
+          Number((await provider.getNetwork()).chainId)
+        ))
+      );
     });
   });
 
@@ -47,9 +53,9 @@ describe('XypeResolver', () => {
   describe('lookupAddress', () => {
     it('lookupAddress: 0xb305c1f2200a17E0502416B1746aB88C9B5C449f - success resolution', async () => {
       const addr = await xypeResolver.lookupAddress(
-        '0xc46DA945f66EBe2E55f49EF9e401ec9eA7C3eC61'
+        '0xcefc9fcc056a8c888698b50fd88453cc66c6abc6'
       );
-      expect(addr).toEqual('qwery.sxt');
+      expect(addr).toEqual('abc55.trustyfy');
     });
 
     it('lookupAddress: 0xf2EA5Fd6538EAb3B0466f1b1A447C742d8b30eFe - expired', async () => {