diff --git a/lib/plugin.js b/lib/plugin.js
index d5bb391..ebdcacd 100644
--- a/lib/plugin.js
+++ b/lib/plugin.js
@@ -1,5 +1,9 @@
 const Web3 = require('web3')
 const { hexToNumberString, toChecksumAddress, numberToHex } = require('web3-utils')
+const VERSIONS = ['old', 'new']
+
+// TODO: create constants, utils
+// TODO: move _repeatUntilResult and _generateId to utils
 
 export default (ctx, inject) => {
   const moduleOptions = <%= JSON.stringify(options) %>
@@ -13,11 +17,11 @@ export default (ctx, inject) => {
       this.web3 = new Web3(new Web3.providers.HttpProvider(options.config.rpcUrl))
     }
 
-    async initProvider(provider) {
+    async initProvider(provider, { version }) {
       try {
         this.provider = provider
 
-        await this._checkVersion()
+        await this._setVersion(version)
         return await this._initProvider()
       } catch (err) {
         throw new Error(`Provider method initProvider has error: ${err.message}`)
@@ -245,10 +249,11 @@ export default (ctx, inject) => {
 
         this.provider.sendAsync(
           {
+            from,
             method,
             params,
             jsonrpc: '2.0',
-            from,
+            id: this._generateId(),
           },
           callback,
         )
@@ -279,6 +284,23 @@ export default (ctx, inject) => {
       }
     }
 
+    async _setVersion(version) {
+      try {
+        if(version) {
+          if (!VERSIONS.includes(version)) {
+            throw new Error('Invalid version parameter.')
+          }
+
+          this.version = version
+          return
+        }
+
+        return await this._checkVersion()
+      } catch (err) {
+        throw new Error(`Provider method _setVersion has error: ${err.message}`)
+      }
+    }
+
     _checkVersion() {
       if (this.provider && this.provider.request) {
         this.version = 'new'
@@ -311,6 +333,12 @@ export default (ctx, inject) => {
         iteration()
       })
     }
+
+    _generateId() {
+      const date = Date.now() * Math.pow(10, 3);
+      const extra = Math.floor(Math.random() * Math.pow(10, 3));
+      return date + extra;
+    }
   }
 
   const provider = new instance({ config: moduleOptions })
diff --git a/package.json b/package.json
index 1c4acc6..87e19b2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nuxt-web3-provider",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "Provider integration with Nuxt.js",
   "repository": {
     "type": "git",
diff --git a/types/index.d.ts b/types/index.d.ts
index 90745ec..02fde3c 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -61,11 +61,17 @@ interface ProviderOptions {
   blockGasLimit?: number,
 }
 
+type ProviderVersions = 'new' | 'old'
+
+type Config = {
+  version?: ProviderVersions
+}
+
 interface ProviderInstance {
   readonly web3: typeof Web3
   readonly config: ProviderOptions
 
-  initProvider(provider: unknown): Promise<Address>
+  initProvider(provider: unknown, config?: Config): Promise<Address>
   sendRequest(params: RequestParams): Promise<TransactionReceipt>
   contractRequest(params: ContractRequestParams): Promise<TransactionReceipt>
   getBalance(params: GetBalanceParams): Promise<number>