diff --git a/src/environment.js b/src/environment.js
index acce528..137dd5c 100644
--- a/src/environment.js
+++ b/src/environment.js
@@ -1,5 +1,5 @@
 // rinkeby
-const DEFAULT_CHAIN_ID = 4
+const DEFAULT_CHAIN_ID = 100
 
 const ENV_VARS = {
   CHAIN_ID() {
diff --git a/src/hooks/useKnownContract.js b/src/hooks/useKnownContract.js
index f20cede..ba445a3 100644
--- a/src/hooks/useKnownContract.js
+++ b/src/hooks/useKnownContract.js
@@ -3,7 +3,7 @@ import {
   getDefaultProvider as getEthersDefaultProvider,
 } from 'ethers'
 import { getKnownContract } from '../lib/known-contracts'
-import env from '../environment'
+import { getDefaultChain } from '../local-settings'
 import { getNetwork } from '../networks'
 
 const readOnlyContractsCache = new Map()
@@ -16,7 +16,7 @@ export function useReadOnlyContract(name) {
   }
 
   const { ensRegistry: ensAddress, chainId, type: networkName } = getNetwork(
-    env('CHAIN_ID')
+    getDefaultChain()
   )
 
   const defaultProvider = getEthersDefaultProvider({
diff --git a/src/hooks/useOrgHooks.js b/src/hooks/useOrgHooks.js
index cfe8b9a..04d7dcf 100644
--- a/src/hooks/useOrgHooks.js
+++ b/src/hooks/useOrgHooks.js
@@ -1,7 +1,6 @@
 import { useEffect, useRef, useState } from 'react'
 import ConvictionVoting from '@1hive/connect-conviction-voting'
 import { connect } from '@aragon/connect'
-import env from '../environment'
 import { getNetwork } from '../networks'
 import BigNumber from '../lib/bigNumber'
 import { getAppAddressByName } from '../lib/data-utils'
@@ -39,7 +38,7 @@ export function useOrganzation() {
     let cancelled = false
 
     const fetchOrg = async () => {
-      const { generalSubgraphUrl, orgAddress } = getNetwork(env('CHAIN_ID'))
+      const { generalSubgraphUrl, orgAddress } = getNetwork(getDefaultChain())
 
       const organization = await connect(orgAddress, [
         'thegraph',
@@ -77,7 +76,7 @@ export function useAppData(organization) {
     const fetchAppData = async () => {
       const apps = await organization.apps()
       const permissions = await organization.permissions()
-      const { defaultSubgraphUrl } = getNetwork(env('CHAIN_ID'))
+      const { defaultSubgraphUrl } = getNetwork(getDefaultChain())
 
       const convictionApp = apps.find(app => app.name === APP_NAME)
 
diff --git a/src/lib/known-contracts.js b/src/lib/known-contracts.js
index 48c5956..51ba663 100644
--- a/src/lib/known-contracts.js
+++ b/src/lib/known-contracts.js
@@ -1,5 +1,5 @@
 import ercTokenAbi from '../abi/ercToken.json'
-import env from '../environment'
+import { getDefaultChain } from '../local-settings'
 
 const KNOWN_CONTRACTS_BY_ENV = new Map([
   [
@@ -19,7 +19,7 @@ const KNOWN_CONTRACTS_BY_ENV = new Map([
 const ABIS = new Map([['TOKEN_ANT', ercTokenAbi]])
 
 export function getKnownContract(name) {
-  const knownContracts = KNOWN_CONTRACTS_BY_ENV.get(env('CHAIN_ID')) || {}
+  const knownContracts = KNOWN_CONTRACTS_BY_ENV.get(getDefaultChain()) || {}
   return [knownContracts[name] || null, ABIS.get(name) || []]
 }
 
diff --git a/src/local-settings.js b/src/local-settings.js
index 55fdfdd..4403bf4 100644
--- a/src/local-settings.js
+++ b/src/local-settings.js
@@ -15,7 +15,7 @@ function setLocalSetting(confKey, value) {
 }
 
 export function getDefaultChain() {
-  return Number(env(DEFAULT_CHAIN_ID)) || '4'
+  return Number(env(DEFAULT_CHAIN_ID)) || 100
 }
 
 export function setDefaultChain(chainId) {