diff --git a/v2/packages/client/__tests__/client-fetching.test.ts b/v2/packages/client/__tests__/client-fetching.test.ts
index 14a9029a6..6b57ba590 100644
--- a/v2/packages/client/__tests__/client-fetching.test.ts
+++ b/v2/packages/client/__tests__/client-fetching.test.ts
@@ -7,6 +7,7 @@ describe('Test client', () => {
   let client: ChainRegistryClient;
   beforeAll(() => {
     const options: ChainRegistryClientOptions = {
+      // add camelCase
       chainNames: ['osmosis']
     };
 
diff --git a/v2/packages/client/__tests__/client.api.test.ts b/v2/packages/client/__tests__/client.api.test.ts
index 441d83321..552dc180e 100644
--- a/v2/packages/client/__tests__/client.api.test.ts
+++ b/v2/packages/client/__tests__/client.api.test.ts
@@ -1,11 +1,10 @@
-import { assetLists as _assetLists, chains } from '@chain-registry/v2';
-
 import {
   ChainRegistryChainUtil,
   ChainRegistryChainUtilOptions,
   ChainRegistryClient,
   ChainRegistryClientOptions
 } from '../src';
+import { assetLists as _assetLists, chains } from '../test-utils';
 
 describe('tests for asset-list-util', () => {
   const assetLists = _assetLists.filter(
@@ -84,7 +83,7 @@ describe('tests for asset-list-util', () => {
 
   it('getAssetNameByDenom', () => {
     const name = client.getAssetNameByDenom('uion');
-    expect(name).toEqual('Ion DAO');
+    expect(name).toEqual('Ion');
   });
 
   it('getChainNameByDenom', () => {
diff --git a/v2/packages/client/setup-jest.ts b/v2/packages/client/setup-jest.ts
index 7ceff8807..a2d065315 100644
--- a/v2/packages/client/setup-jest.ts
+++ b/v2/packages/client/setup-jest.ts
@@ -1,6 +1,6 @@
 import nock from 'nock';
 
-import { assets, chains, ibc } from './test-utils';
+import { assetLists, chains, ibc } from './test-utils';
 
 const baseUrl = 'https://raw.githubusercontent.com';
 
@@ -14,35 +14,35 @@ beforeAll(() => {
   // 'https://raw.githubusercontent.com/cosmos/chain-registry/master/_IBC/osmosis-secretnetwork.json'
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/osmosis/chain.json')
-    .reply(200, chains.find(c => c.chain_name === 'osmosis'));
+    .reply(200, chains.find(c => c.chainName === 'osmosis'));
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/osmosis/assetlist.json')
-    .reply(200, assets.find(c => c.chain_name === 'osmosis'));
+    .reply(200, assetLists.find(c => c.chainName === 'osmosis'));
 
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/stargaze/chain.json')
-    .reply(200, chains.find(c => c.chain_name === 'stargaze'));
+    .reply(200, chains.find(c => c.chainName === 'stargaze'));
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/stargaze/assetlist.json')
-    .reply(200, assets.find(c => c.chain_name === 'stargaze'));
+    .reply(200, assetLists.find(c => c.chainName === 'stargaze'));
 
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/juno/chain.json')
-    .reply(200, chains.find(c => c.chain_name === 'juno'));
+    .reply(200, chains.find(c => c.chainName === 'juno'));
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/juno/assetlist.json')
-    .reply(200, assets.find(c => c.chain_name === 'juno'));
+    .reply(200, assetLists.find(c => c.chainName === 'juno'));
   
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/secretnetwork/assetlist.json')
-    .reply(200, assets.find(c => c.chain_name === 'secretnetwork'));
+    .reply(200, assetLists.find(c => c.chainName === 'secretnetwork'));
     
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/_IBC/juno-osmosis.json')
-    .reply(200, ibc.find(i => i.chain_1.chain_name === 'juno' && i.chain_2.chain_name==='osmosis'));
+    .reply(200, ibc.find(i => i.chain1.chainName === 'juno' && i.chain2.chainName==='osmosis'));
   nock(baseUrl)
     .get('/cosmos/chain-registry/master/_IBC/osmosis-secretnetwork.json')
-    .reply(200, ibc.find(i => i.chain_1.chain_name === 'osmosis' && i.chain_2.chain_name==='secretnetwork'));
+    .reply(200, ibc.find(i => i.chain1.chainName === 'osmosis' && i.chain2.chainName==='secretnetwork'));
 });
 
 
diff --git a/v2/packages/client/src/fetcher.ts b/v2/packages/client/src/fetcher.ts
index a941b7bc9..a0c773c2b 100644
--- a/v2/packages/client/src/fetcher.ts
+++ b/v2/packages/client/src/fetcher.ts
@@ -1,4 +1,3 @@
-import { AssetList as IAssetList, Chain as IChain, IBCData as IIBCData} from '@chain-registry/interfaces';
 import {
   AssetList,
   Chain,
@@ -107,11 +106,11 @@ export class ChainRegistryFetcher {
     return chainInfo;
   }
 
-  upsertChain(data: IChain) {
+  upsertChain(data: Chain) {
     const found = this._chains.find((chain) => {
       return (
-        chain.chainName === data.chain_name &&
-        chain.networkType === data.network_type
+        chain.chainName === data.chainName &&
+        chain.networkType === data.networkType
       );
     });
 
@@ -124,8 +123,8 @@ export class ChainRegistryFetcher {
     
     this._chains = this._chains.map((chain) => {
       if (
-        chain.chainName === data.chain_name &&
-        chain.networkType === data.network_type
+        chain.chainName === data.chainName &&
+        chain.networkType === data.networkType
       ) {
         return convertedData;
       } else {
@@ -134,9 +133,9 @@ export class ChainRegistryFetcher {
     });
   }
 
-  updateAssetList(data: IAssetList) {
+  updateAssetList(data: AssetList) {
     const found = this._assetLists.find((list) => {
-      return list.chainName === data.chain_name;
+      return list.chainName === data.chainName;
     });
 
     const convertedData: AssetList = keysToCamel(data);
@@ -147,7 +146,7 @@ export class ChainRegistryFetcher {
     }
 
     this._assetLists = this._assetLists.map((list) => {
-      if (list.chainName === data.chain_name) {
+      if (list.chainName === data.chainName) {
         return convertedData;
       } else {
         return list;
@@ -155,11 +154,11 @@ export class ChainRegistryFetcher {
     });
   }
 
-  upsertIbcData(data: IIBCData) {
+  upsertIbcData(data: IBCData) {
     const found = this._ibcData.find((info) => {
       return (
-        info.chain1.chainName === data.chain_1.chain_name &&
-        info.chain2.chainName === data.chain_2.chain_name
+        info.chain1.chainName === data.chain1.chainName &&
+        info.chain2.chainName === data.chain2.chainName
       );
     });
 
@@ -172,8 +171,8 @@ export class ChainRegistryFetcher {
 
     this._ibcData = this._ibcData.map((info) => {
       if (
-        info.chain1.chainName === data.chain_1.chain_name &&
-        info.chain2.chainName === data.chain_2.chain_name
+        info.chain1.chainName === data.chain1.chainName &&
+        info.chain2.chainName === data.chain2.chainName
       ) {
         return convertedData;
       } else {
@@ -182,18 +181,18 @@ export class ChainRegistryFetcher {
     });
   }
 
-  update(data: IChain | IAssetList | IIBCData) {
+  update(data: Chain | AssetList | IBCData) {
     if (!data.$schema) throw new Error('not a registered JSON schema type');
     const type = basename(data.$schema, '.schema.json');
     switch (type) {
     case 'chain':
-      this.upsertChain(data as IChain);
+      this.upsertChain(data as Chain);
       break;
     case 'assetlist':
-      this.updateAssetList(data as IAssetList);
+      this.updateAssetList(data as AssetList);
       break;
     case 'ibc_data':
-      this.upsertIbcData(data as IIBCData);
+      this.upsertIbcData(data as IBCData);
       break;
     default:
       throw new Error('unknown schema type');