diff --git a/packages/portis-web3/src/index.ts b/packages/portis-web3/src/index.ts
index 1dc0557..172581f 100644
--- a/packages/portis-web3/src/index.ts
+++ b/packages/portis-web3/src/index.ts
@@ -1,5 +1,6 @@
 import ProviderEngine from '@portis/web3-provider-engine';
 import CacheSubprovider from '@portis/web3-provider-engine/subproviders/cache.js';
+import In3Subprovider from '@portis/web3-provider-engine/subproviders/in3.js';
 import FixtureSubprovider from '@portis/web3-provider-engine/subproviders/fixture.js';
 import FilterSubprovider from '@portis/web3-provider-engine/subproviders/filters.js';
 import HookedWalletSubprovider from '@portis/web3-provider-engine/subproviders/hooked-wallet.js';
@@ -52,7 +53,7 @@ export default class Portis {
     this._valiadateParams(dappId, network, options);
     this.config = {
       dappId,
-      network: networkAdapter(network, options.gasRelay),
+      network: networkAdapter(network, options.gasRelay, options.useIn3),
       version: VERSION,
       scope: options.scope,
       registerPageByDefault: options.registerPageByDefault,
@@ -61,10 +62,25 @@ export default class Portis {
     this.provider = this._initProvider(options);
   }
 
-  changeNetwork(network: string | INetwork, gasRelay?: boolean) {
-    const newNetwork = networkAdapter(network, gasRelay);
+  changeNetwork(network: string | INetwork, gasRelay?: boolean, useIn3?: boolean) {
+    const newNetwork = networkAdapter(network, gasRelay, useIn3);
     this.clearSubprovider(NonceSubprovider);
     this.clearSubprovider(CacheSubprovider);
+
+    const subprovider = this.provider._providers.find(subprovider => subprovider instanceof In3Subprovider);
+
+    //if a in3 provider was added then remove it.
+    if (subprovider) this.provider.removeProvider(subprovider);
+
+    //if user plans to useIn3 with the change then add the in3 Provider.
+    if (useIn3) {
+      const in3Config = Object.assign({}, newNetwork);
+      delete in3Config.nodeUrl;
+
+      //add the in3 subprovider to the engine
+      this.provider.addProvider(new In3Subprovider(in3Config));
+    }
+
     this.config.network = newNetwork;
   }
 
@@ -348,7 +364,13 @@ export default class Portis {
       }),
     );
 
-    if (!options.pocketDevId) {
+    if (options.useIn3) {
+      const in3Config = Object.assign({}, this.config.network);
+      delete in3Config.nodeUrl;
+
+      //add the in3 subprovider to the engine
+      engine.addProvider(new In3Subprovider(in3Config));
+    } else if (!options.pocketDevId && !options.useIn3) {
       engine.addProvider({
         setEngine: _ => _,
         handleRequest: async (payload, next, end) => {
diff --git a/packages/portis-web3/src/interfaces.ts b/packages/portis-web3/src/interfaces.ts
index 46d9906..d8048d3 100644
--- a/packages/portis-web3/src/interfaces.ts
+++ b/packages/portis-web3/src/interfaces.ts
@@ -50,6 +50,7 @@ export interface IOptions {
   gasRelay?: boolean;
   registerPageByDefault?: boolean;
   pocketDevId?: string;
+  useIn3?: boolean;
 }
 
 export interface ITransactionRequest {
diff --git a/packages/portis-web3/src/networks.ts b/packages/portis-web3/src/networks.ts
index d00dfa1..df08308 100644
--- a/packages/portis-web3/src/networks.ts
+++ b/packages/portis-web3/src/networks.ts
@@ -1,6 +1,8 @@
 import { INetwork } from './interfaces';
 
-export function networkAdapter(network: string | INetwork, gasRelay?: boolean) {
+const IN3_SUPPORTED_CHAINS = ['mainnet', 'kovan', 'goerli'];
+
+export function networkAdapter(network: string | INetwork, gasRelay?: boolean, useIn3?: boolean) {
   const networkObj = typeof network === 'string' ? Object.assign({}, networks[network]) : network;
 
   if (typeof networkObj !== 'object') {
@@ -9,6 +11,20 @@ export function networkAdapter(network: string | INetwork, gasRelay?: boolean) {
     );
   }
 
+  if (useIn3) {
+    if (!(networkObj.chainId && networkObj['requestCount'] && networkObj['minDeposit'])) {
+      throw new Error(
+        '[Portis-In3] a in3 config with chainId, requestCount and minDeposit is required. Some or all are missing',
+      );
+    } else if (!IN3_SUPPORTED_CHAINS.includes(networkObj.chainId)) {
+      throw new Error(
+        '[Portis-In3] Only mainnet, kovan and goerli are supported with In3. Specify chainId as ["kovan", "mainnet", "goerli"]',
+      );
+    } else {
+      networkObj.nodeUrl = networks[networkObj.chainId].nodeUrl;
+    }
+  }
+
   if (!networkObj.nodeUrl) {
     throw new Error(
       "[Portis] 'nodeUrl' is required. Read more about it here: https://docs.portis.io/#/configuration?id=network",
diff --git a/packages/portis-web3/webpack.config.babel.js b/packages/portis-web3/webpack.config.babel.js
index f4eb3e7..2f98302 100644
--- a/packages/portis-web3/webpack.config.babel.js
+++ b/packages/portis-web3/webpack.config.babel.js
@@ -1,4 +1,5 @@
 const path = require('path');
+const webpack = require('webpack');
 
 export default () => [
   {
@@ -15,13 +16,14 @@ export default () => [
       library: 'Portis',
       libraryExport: 'default',
     },
+    plugins: [new webpack.SourceMapDevToolPlugin({})],
     module: {
       rules: [
         {
           test: /\.(js)$/,
           include: [
             path.resolve(__dirname, 'src'),
-            path.resolve(__dirname, 'node_modules/@portis/web3-provider-engine')
+            path.resolve(__dirname, 'node_modules/@portis/web3-provider-engine'),
           ],
           use: 'babel-loader',
         },