diff --git a/README.md b/README.md
index f24d11c..be15980 100644
--- a/README.md
+++ b/README.md
@@ -7,19 +7,18 @@ Please, read [extra guides here](guides-examples.md).
 ## Networks
 
 - Avalanche Fuji (43113)
-- Optimism Goerli (420)
 
 ## Contracts
 
 ### Avalanche Fuji (43113)
 
-- AccessManagement: [0x7953C478A5F5d53C263Bd1251BfC4c418d8C5568](https://avalanche.testnet.routescan.io/address/0x7953C478A5F5d53C263Bd1251BfC4c418d8C5568#code) (✅ verified)
-- Hub: [0xE69cEa099bde1f729a13C4D9eD41E0E6C5b8873b](https://avalanche.testnet.routescan.io/address/0xE69cEa099bde1f729a13C4D9eD41E0E6C5b8873b#code) (✅ verified)
+- AccessManagement:
+- Hub:
 
-### Optimism Goerli (420)
+### Mumbai (80001)
 
-- AccessManagement: [0x483E5D5a59EeB5dB9c2AAC502Da40fab173b8DF2](https://goerli-optimism.etherscan.io/address/0x483E5D5a59EeB5dB9c2AAC502Da40fab173b8DF2#code) (✅verified)
-- Hub: [0x27aAd1692fD0F11C39c69c5412E52cCEf15045BD](https://goerli-optimism.etherscan.io/address/0x27aAd1692fD0F11C39c69c5412E52cCEf15045BD#code) (✅verified)
+- AccessManagement:
+- Hub:
 
 ## Getting Started
 
diff --git a/config/accounts.ts b/config/accounts.ts
index 30cea4d..0f999cd 100644
--- a/config/accounts.ts
+++ b/config/accounts.ts
@@ -1,3 +1,4 @@
-export const evmAccounts = [
-  String(process.env.ACCOUNTS_PRIVATE_KEY_1) // owner
+export const evmAccounts: string[] = [
+  process.env.ACCOUNTS_PRIVATE_KEY_1!,
+  process.env.ACCOUNTS_PRIVATE_KEY_2!
 ]
diff --git a/config/chains.ts b/config/chains.ts
index 9a8253a..40c42c4 100644
--- a/config/chains.ts
+++ b/config/chains.ts
@@ -32,39 +32,42 @@ export const avalancheFuji: Chain = {
   gasPrice: 25000000000
 }
 
-export const optimismGoerli: Chain = {
-  id: 420,
-  name: 'Optimism Goerli',
-  network: 'optimism-goerli',
-  nativeCurrency: { name: 'Goerli Ether', symbol: 'ETH', decimals: 18 },
+export const polygonMumbai: Chain = {
+  id: 80_001,
+  name: 'Polygon Mumbai',
+  network: 'maticmum',
   accounts: evmAccounts,
+  nativeCurrency: { name: 'MATIC', symbol: 'MATIC', decimals: 18 },
   rpcUrls: {
     protocol: {
-      http: [process.env.PUBLIC_NETWORK_420_HTTP_RPC!]
+      http: [process.env.PUBLIC_NETWORK_80001_HTTP_RPC!]
+    },
+    infura: {
+      http: ['https://polygon-mumbai.infura.io/v3']
     },
     default: {
-      http: ['https://goerli.optimism.io']
+      http: ['https://rpc.ankr.com/polygon_mumbai']
     },
     public: {
-      http: ['https://goerli.optimism.io']
+      http: ['https://rpc.ankr.com/polygon_mumbai']
     }
   },
   blockExplorers: {
     etherscan: {
-      name: 'Etherscan',
-      url: 'https://goerli-optimism.etherscan.io'
+      name: 'PolygonScan',
+      url: 'https://mumbai.polygonscan.com'
     },
     default: {
-      name: 'Etherscan',
-      url: 'https://goerli-optimism.etherscan.io'
+      name: 'PolygonScan',
+      url: 'https://mumbai.polygonscan.com'
     }
   },
   contracts: {
     multicall3: {
       address: '0xca11bde05977b3631167028862be2a173976ca11',
-      blockCreated: 49461
+      blockCreated: 25770160
     }
   },
   testnet: true,
-  gasPrice: 210000
+  gasPrice: 25000000000
 }
diff --git a/config/config.ts b/config/config.ts
index f084f01..a9c360d 100644
--- a/config/config.ts
+++ b/config/config.ts
@@ -1,8 +1,8 @@
 import { reduce } from 'lodash'
-import { avalancheFuji, optimismGoerli } from './chains'
+import { avalancheFuji, polygonMumbai } from './chains'
 import { Chain } from './types'
 
-export const allowedChains = [avalancheFuji, optimismGoerli]
+export const allowedChains = [avalancheFuji, polygonMumbai]
 
 export const allowedChainsConfig = reduce(
   allowedChains,
diff --git a/hardhat.config.ts b/hardhat.config.ts
index 51b8935..b58f6f8 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -42,7 +42,7 @@ const config: HardhatUserConfig = {
     settings: {
       optimizer: {
         enabled: true,
-        runs: 800
+        runs: 200
       }
     }
   },
@@ -52,10 +52,10 @@ const config: HardhatUserConfig = {
   },
   etherscan: {
     apiKey: {
-      mainnet: process.env.ETHERSCAN_API_KEY!,
+      ethereum: process.env.ETHERSCAN_API_KEY!,
+      polygonMumbai: process.env.POLYGON_MUMBAI_API_KEY!,
       // comment if use custom chain
-      avalancheFujiTestnet: process.env.AVALANCHE_FUJI_API_KEY!,
-      optimisticGoerli: process.env.OPTIMISM_GOERLI_API_KEY!
+      avalancheFujiTestnet: process.env.AVALANCHE_FUJI_API_KEY!
       // uncomment snowtrace if any issue with avalanche fuji
       // snowtrace: 'snowtrace'
     }