diff --git a/README.md b/README.md
index 897bf4e3..865f0852 100644
--- a/README.md
+++ b/README.md
@@ -68,18 +68,23 @@ Create SDK instance
 ```typescript
 import { StakeWiseSDK, Network } from '@stakewise/v3-sdk'
 
-const sdk = new StakeWiseSDK({ network: Network.Mainnet })
+const sdk = new StakeWiseSDK({
+  network: Network.Mainnet,
+  endpoints: {
+    web3: 'https://mainnet.infura.io/v3/...',
+  },
+})
 
 ```
 #### SDK Constructor Arguments:
 
-| Name               | Type                                 | Required | Description |
-|--------------------|--------------------------------------|----------|----------------|
-| network            | `Network`                            | **Yes**  | Chain id |
-| provider           | `BrowserProvider or JsonRpcProvider` | **No**   | You can provide your implementation of the provender for ethers |
-| endpoints.web3     | `string OR string[]`                 | **No**   | Your urls for connect to blockchain |
-| endpoints.subgraph | `string`                             | **No**   | stakewise subgraph url |
-| endpoints.api      | `string`                             | **No**   | stakewise backend url |
+| Name               | Type                                                             | Required | Description                                                                                                                                                         |
+|--------------------|------------------------------------------------------------------|----------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| network            | `Network`                                                        | **Yes**  | Chain id                                                                                                                                                            |
+| provider           | `BrowserProvider or JsonRpcProvider`                             | **No**   | You can provide your implementation of the provender for ethers                                                                                                     |
+| endpoints.web3     | `string OR Array<(string \| { url: string, headers: Headers })>` | **No**   | Your urls for connecting to blockchain. This parameter is required if `provider` is not provided. If more than one URL is provided, they will be used as fallbacks. |
+| endpoints.subgraph | `string`                                                         | **No**   | stakewise subgraph url                                                                                                                                              |
+| endpoints.api      | `string`                                                         | **No**   | stakewise backend url                                                                                                                                               |
 
 ## Quick Links
 
diff --git a/changelog/next-release.md b/changelog/next-release.md
index e69de29b..cd2ad74b 100644
--- a/changelog/next-release.md
+++ b/changelog/next-release.md
@@ -0,0 +1 @@
+- Breaking change: Removed default rpc urls from the SDK. You must now provide the rpc urls or provider when creating a new SDK instance.
diff --git a/package-lock.json b/package-lock.json
index a73c5e9f..5189f0f4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@stakewise/v3-sdk",
-  "version": "2.0.3",
+  "version": "2.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@stakewise/v3-sdk",
-      "version": "2.0.3",
+      "version": "2.1.0",
       "license": "AGPL-3.0-only",
       "dependencies": {
         "bignumber.js": "9.1.2"
diff --git a/package.json b/package.json
index fc26adbc..3c662932 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "2.0.3",
+  "version": "2.1.0",
   "sideEffects": false,
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/src/StakeWiseSDK.ts b/src/StakeWiseSDK.ts
index 94f90da2..91d8bbe6 100644
--- a/src/StakeWiseSDK.ts
+++ b/src/StakeWiseSDK.ts
@@ -22,6 +22,10 @@ class StakeWiseSDK {
   constructor(options: StakeWise.Options) {
     const config = configs[options.network]
 
+    if (!options.provider && !options.endpoints?.web3) {
+      throw new Error('Provider or endpoints.web3 should be provided')
+    }
+
     const provider = options.provider || createProvider(options)
 
     const contracts = createContracts({ provider, config })
diff --git a/src/utils/apiUrls.ts b/src/utils/apiUrls.ts
index 68ce9c99..adcb5e6b 100644
--- a/src/utils/apiUrls.ts
+++ b/src/utils/apiUrls.ts
@@ -1,13 +1,11 @@
 import configs from './configs'
 
 
-const getWeb3Url = (options: StakeWise.Options) => options.endpoints?.web3 || configs[options.network].network.url
 const getBackendUrl = (options: StakeWise.Options) => options.endpoints?.api || configs[options.network].api.backend
 const getSubgraphqlUrl = (options: StakeWise.Options) => options.endpoints?.subgraph || configs[options.network].api.subgraph
 
 
 export default {
-  getWeb3Url,
   getBackendUrl,
   getSubgraphqlUrl,
 }
diff --git a/src/utils/constants/chains.ts b/src/utils/constants/chains.ts
index 79a12be0..94656458 100644
--- a/src/utils/constants/chains.ts
+++ b/src/utils/constants/chains.ts
@@ -8,7 +8,6 @@ const mainnet = {
   chainId: Network.Mainnet,
   hexadecimalChainId: '0x1',
   blockExplorerUrl: 'https://etherscan.io',
-  url: 'https://mainnet.infura.io/v3/84842078b09946638c03157f83405213',
   nativeCurrency: {
     symbol: tokens.eth,
     name: 'Ethereum',
@@ -22,7 +21,6 @@ const holesky = {
   name: 'Holesky Testnet',
   chainId: Network.Holesky,
   hexadecimalChainId: '0x4268',
-  url: 'https://ethereum-holesky.publicnode.com/',
   blockExplorerUrl: 'https://holesky.etherscan.io',
   nativeCurrency: {
     symbol: tokens.eth,
@@ -37,7 +35,6 @@ const chiado = {
   name: 'Chiado Testnet',
   chainId: Network.Chiado,
   hexadecimalChainId: '0x27D8',
-  url: 'https://rpc.chiadochain.net',
   blockExplorerUrl: 'https://gnosis-chiado.blockscout.com',
   nativeCurrency: {
     symbol: tokens.xdai,
@@ -52,7 +49,6 @@ const gnosis = {
   name: 'Gnosis Chain',
   chainId: Network.Gnosis,
   hexadecimalChainId: '0x64',
-  url: 'https://rpc.gnosischain.com',
   blockExplorerUrl: 'https://gnosisscan.io',
   nativeCurrency: {
     symbol: tokens.xdai,
diff --git a/src/utils/createProvider.ts b/src/utils/createProvider.ts
index 1ba32dab..6dcb11a6 100644
--- a/src/utils/createProvider.ts
+++ b/src/utils/createProvider.ts
@@ -44,7 +44,7 @@ const getFetchRequest = (_url: string | StakeWise.UrlWithHeaders) => {
 const createProvider = (options: StakeWise.Options) => {
   const { network } = options
 
-  const urls = apiUrls.getWeb3Url(options)
+  const urls = options.endpoints?.web3 as string | string[]
   const arrayUrls = typeof urls === 'string' ? [ urls ] : urls
 
   if (arrayUrls.length === 1) {