diff --git a/package.json b/package.json
index ac45944..d009794 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "multinet",
-  "version": "0.11.0",
+  "version": "0.12.0",
   "description": "Multinet client library",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/src/client.ts b/src/client.ts
index 3bfc184..155926e 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -1,4 +1,4 @@
-import axios, { AxiosInstance } from 'axios';
+import axios, { AxiosInstance, AxiosRequestConfig } from 'axios';
 
 export class Client {
   public axios: AxiosInstance;
@@ -21,9 +21,9 @@ export class Client {
     });
   }
 
-  public post(path: string, params: {} = {}, headers: {} = {}): Promise<any> {
+  public post(path: string, data: any = null, params: AxiosRequestConfig = {}): Promise<any> {
     return new Promise((resolve, reject) => {
-      this.axios.post(path, params, { headers, })
+      this.axios.post(path, data, params)
         .then((resp) => {
           resolve(resp.data);
         })
diff --git a/src/index.ts b/src/index.ts
index 896d055..9004e7f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,5 +1,5 @@
 import { Client } from './client';
-import { AxiosPromise } from 'axios';
+import { AxiosPromise, AxiosRequestConfig } from 'axios';
 
 export interface TableRow {
   _key: string;
@@ -60,6 +60,8 @@ export type EdgesOptionsSpec = OffsetLimitSpec & {
 export interface FileUploadOptionsSpec {
   type: UploadType;
   data: string | File;
+  key?: string;
+  overwrite?: boolean;
 }
 
 export interface CreateGraphOptionsSpec {
@@ -139,19 +141,25 @@ class MultinetAPI {
   }
 
   public renameWorkspace(workspace: string, name: string): AxiosPromise {
-    return this.client.axios.put(`workspaces/${workspace}/name`, null, { params: { name }});
+    return this.client.axios.put(`workspaces/${workspace}/name`, null, { params: { name } });
   }
 
   public async uploadTable(workspace: string, table: string, options: FileUploadOptionsSpec): Promise<Array<{}>> {
+    const { type, data, key, overwrite } = options;
     let text;
-    if (typeof options.data === 'string') {
-      text = options.data;
+
+    if (typeof data === 'string') {
+      text = data;
     } else {
-      text = await fileToText(options.data);
+      text = await fileToText(data);
     }
 
-    return this.client.post(`/${options.type}/${workspace}/${table}`, text, {
-      'Content-Type': 'text/plain',
+    return this.client.post(`/${type}/${workspace}/${table}`, text, {
+      headers: { 'Content-Type': 'text/plain' },
+      params: {
+        key: key || undefined,
+        overwrite: overwrite || undefined,
+      },
     });
   }
 
@@ -174,7 +182,7 @@ class MultinetAPI {
   }
 
   public aql(workspace: string, query: string): Promise<any[]> {
-    return this.client.post(`/workspaces/${workspace}/aql`, query, {'Content-Type': 'text/plain'});
+    return this.client.post(`/workspaces/${workspace}/aql`, query, { headers: { 'Content-Type': 'text/plain' } });
   }
 
   public downloadGraph(workspace: string, graph: string): AxiosPromise {