diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..8cf0e41
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+18.12.0
\ No newline at end of file
diff --git a/package.json b/package.json
index 99ddcf6..7deb9cf 100644
--- a/package.json
+++ b/package.json
@@ -6,11 +6,9 @@
   "dependencies": {
     "axios": "^0.21.1",
     "event-emitter": "^0.3.5",
-    "form-data": "^3.0.0",
     "js-base64": "2.6.3",
     "qs": "^6.10.3",
-    "urijs": "^1.19.7",
-    "uuid": "^8.3.2"
+    "urijs": "^1.19.7"
   },
   "description": "JS client for Put.io API",
   "devDependencies": {
diff --git a/src/client/index.ts b/src/client/index.ts
index e3d994f..15d0fe2 100644
--- a/src/client/index.ts
+++ b/src/client/index.ts
@@ -3,14 +3,12 @@ import qs from 'qs'
 
 import {
   PutioAPIClientResponseInterceptorFactory,
-  PutioApiClientRequestInterceptorFactory,
   IPutioAPIClientOptions,
   IPutioAPIClientResponse,
 } from './types'
 
 import { DEFAULT_CLIENT_OPTIONS } from '../constants'
 
-import { createCorrelationIdSetter } from '../interceptors/request/correlationIdSetter'
 import { createClientIPChangeEmitter } from '../interceptors/response/clientIPChangeEmitter'
 import { createErrorEmitter } from '../interceptors/response/errorEmitter'
 import { createResponseFormatter } from '../interceptors/response/responseFormatter'
@@ -180,23 +178,6 @@ export class PutioAPIClient {
         qs.stringify(params, { arrayFormat: 'comma' }),
     })
 
-    // apply request interceptors
-    const requestInterceptorFactories: PutioApiClientRequestInterceptorFactory[] = [
-      createCorrelationIdSetter,
-    ]
-
-    requestInterceptorFactories
-      .map(createInterceptor => createInterceptor(this.options))
-      .forEach(requestInterceptor => {
-        axiosInstance.interceptors.request.use(
-          requestInterceptor,
-          null,
-          // the 3rd argument is not reflected in the types, but it exists?
-          // @ts-ignore
-          { synchronous: true },
-        )
-      })
-
     // apply response interceptors
     const responseInterceptorFactories: PutioAPIClientResponseInterceptorFactory[] = [
       createResponseFormatter,
diff --git a/src/client/types.ts b/src/client/types.ts
index 928c08a..03b28fd 100644
--- a/src/client/types.ts
+++ b/src/client/types.ts
@@ -1,10 +1,9 @@
-import { AxiosError, AxiosRequestConfig, AxiosResponse } from 'axios'
+import { AxiosError, AxiosResponse } from 'axios'
 
 export interface IPutioAPIClientOptions {
   clientID?: number
   baseURL?: string
   webAppURL?: string
-  generateUUID?: () => string
 }
 
 export interface IPutioAPIClientResponse<T> extends AxiosResponse {
@@ -13,7 +12,7 @@ export interface IPutioAPIClientResponse<T> extends AxiosResponse {
 }
 
 export interface IPutioAPIClientErrorData {
-  correlation_id?: string
+  'x-trace-id'?: string
   error_id?: string
   error_uri?: string
   error_type: string
@@ -27,14 +26,6 @@ export interface IPutioAPIClientError
   toJSON: () => IPutioAPIClientErrorData
 }
 
-export type PutioAPIClientRequestInterceptor = (
-  config: AxiosRequestConfig,
-) => AxiosRequestConfig
-
-export type PutioApiClientRequestInterceptorFactory = (
-  options: IPutioAPIClientOptions,
-) => PutioAPIClientRequestInterceptor
-
 export type PutioAPIClientResponseInterceptor = {
   onFulfilled: (
     response: IPutioAPIClientResponse<any>,
diff --git a/src/constants.ts b/src/constants.ts
index 382b058..347d8f1 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -1,7 +1,5 @@
 import { IPutioAPIClientOptions } from './client/types'
 
-export const CORRELATION_ID_HEADER_NAME = 'X-Putio-Correlation-Id'
-export const NIL_CORRELATION_ID = '00000000-0000-0000-0000-000000000000'
 export const DEFAULT_CLIENT_OPTIONS: IPutioAPIClientOptions = {
   baseURL: 'https://api.put.io/v2',
   clientID: 1,
diff --git a/src/interceptors/request/correlationIdSetter.spec.ts b/src/interceptors/request/correlationIdSetter.spec.ts
deleted file mode 100644
index 88cf54a..0000000
--- a/src/interceptors/request/correlationIdSetter.spec.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-import { v4 } from 'uuid'
-import { createCorrelationIdSetter } from './correlationIdSetter'
-import {
-  CORRELATION_ID_HEADER_NAME,
-  NIL_CORRELATION_ID,
-  DEFAULT_CLIENT_OPTIONS,
-} from '../../constants'
-
-jest.mock('uuid', () => ({ v4: jest.fn() }))
-
-describe('interceptors/request/correlationIdSetter', () => {
-  let correlationIdSetter = createCorrelationIdSetter(DEFAULT_CLIENT_OPTIONS)
-
-  beforeEach(() => {
-    correlationIdSetter = createCorrelationIdSetter(DEFAULT_CLIENT_OPTIONS)
-    jest.restoreAllMocks()
-  })
-
-  it('uses generateUUID function from client options if available', () => {
-    const mockUUID = 'ecdfa284-6ce1-47b4-b2d4-1d5186fc6f14'
-
-    correlationIdSetter = createCorrelationIdSetter({
-      ...DEFAULT_CLIENT_OPTIONS,
-      generateUUID: () => mockUUID,
-    })
-
-    expect(
-      correlationIdSetter({ headers: {} }).headers[CORRELATION_ID_HEADER_NAME],
-    ).toBe(mockUUID)
-  })
-
-  it('sets a unique correlation id when uuid/v4 works properly in the environment', () => {
-    const mockUUID = 'fcdfa284-6ce1-47b4-b2d4-1d5186fc6f14'
-    ;(v4 as jest.Mock).mockImplementationOnce(() => mockUUID)
-
-    expect(
-      correlationIdSetter({ headers: {} }).headers[CORRELATION_ID_HEADER_NAME],
-    ).toBe(mockUUID)
-  })
-
-  it('uses nil correlation id when uuid/v4 fails to work properly in the environment', () => {
-    ;(v4 as jest.Mock).mockImplementationOnce(() => {
-      throw new Error('uuid failed to work in the environment')
-    })
-
-    expect(
-      correlationIdSetter({ headers: {} }).headers[CORRELATION_ID_HEADER_NAME],
-    ).toBe(NIL_CORRELATION_ID)
-  })
-})
diff --git a/src/interceptors/request/correlationIdSetter.ts b/src/interceptors/request/correlationIdSetter.ts
deleted file mode 100644
index 67d31aa..0000000
--- a/src/interceptors/request/correlationIdSetter.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import { CORRELATION_ID_HEADER_NAME, NIL_CORRELATION_ID } from '../../constants'
-import { PutioApiClientRequestInterceptorFactory } from '../../client/types'
-
-export const createCorrelationIdSetter: PutioApiClientRequestInterceptorFactory = options => config => {
-  try {
-    const { generateUUID } = options
-
-    if (generateUUID) {
-      config.headers[CORRELATION_ID_HEADER_NAME] = generateUUID()
-    } else {
-      const { v4 } = require('uuid')
-      config.headers[CORRELATION_ID_HEADER_NAME] = v4()
-    }
-  } catch {
-    config.headers[CORRELATION_ID_HEADER_NAME] = NIL_CORRELATION_ID
-  }
-
-  return config
-}
diff --git a/src/interceptors/response/responseFormatter.spec.ts b/src/interceptors/response/responseFormatter.spec.ts
index 826eb25..cc9a65c 100644
--- a/src/interceptors/response/responseFormatter.spec.ts
+++ b/src/interceptors/response/responseFormatter.spec.ts
@@ -18,16 +18,14 @@ describe('interceptors/response/responseFormatter', () => {
             "foo": "bar",
             "status": "OK",
           },
-          "config": Object {
-            "headers": Object {
-              "X-Putio-Correlation-Id": "00000000-0000-0000-0000-000000000000",
-            },
-          },
+          "config": Object {},
           "data": Object {
             "foo": "bar",
             "status": "OK",
           },
-          "headers": Object {},
+          "headers": Object {
+            "x-trace-id": "MOCK_TRACE_ID",
+          },
           "status": 200,
           "statusText": "ok",
         }
@@ -46,7 +44,9 @@ describe('interceptors/response/responseFormatter', () => {
             error_message: 'Putio API Error',
             status_code: 400,
           },
-          headers: {},
+          headers: {
+            'x-trace-id': 'MOCK_TRACE_ID',
+          },
           status: 400,
           statusText: 'Error!',
         },
@@ -55,10 +55,10 @@ describe('interceptors/response/responseFormatter', () => {
       responseFormatter.onRejected(error).catch(e =>
         expect(e).toMatchInlineSnapshot(`
           Object {
-            "correlation_id": "00000000-0000-0000-0000-000000000000",
             "error_message": "Putio API Error",
             "error_type": "API_ERROR",
             "status_code": 400,
+            "x-trace-id": "MOCK_TRACE_ID",
           }
         `),
       )
@@ -81,10 +81,10 @@ describe('interceptors/response/responseFormatter', () => {
       responseFormatter.onRejected(error).catch(e =>
         expect(e).toMatchInlineSnapshot(`
           Object {
-            "correlation_id": undefined,
             "error_message": "AXIOS_ERROR_MESSAGE",
             "error_type": "ERROR",
             "status_code": 502,
+            "x-trace-id": undefined,
           }
         `),
       )
@@ -94,10 +94,10 @@ describe('interceptors/response/responseFormatter', () => {
       responseFormatter.onRejected(mockPutioAPIClientError).catch(e =>
         expect(e).toMatchInlineSnapshot(`
           Object {
-            "correlation_id": undefined,
             "error_message": "AXIOS_ERROR_MESSAGE",
             "error_type": "ERROR",
             "status_code": 0,
+            "x-trace-id": undefined,
           }
         `),
       )
@@ -134,11 +134,11 @@ describe('interceptors/response/responseFormatter', () => {
       responseFormatter.onRejected(error).catch(e =>
         expect(e).toMatchInlineSnapshot(`
           Object {
-            "correlation_id": undefined,
             "error_message": "AXIOS_ERROR_MESSAGE",
             "error_type": "ERROR",
             "foo": "bar",
             "status_code": 400,
+            "x-trace-id": undefined,
           }
         `),
       )
diff --git a/src/interceptors/response/responseFormatter.ts b/src/interceptors/response/responseFormatter.ts
index 6fef3d2..a0db9cc 100644
--- a/src/interceptors/response/responseFormatter.ts
+++ b/src/interceptors/response/responseFormatter.ts
@@ -4,7 +4,6 @@ import {
   IPutioAPIClientErrorData,
   PutioAPIClientResponseInterceptorFactory,
 } from '../../client/types'
-import { CORRELATION_ID_HEADER_NAME } from '../../constants'
 import { isPutioAPIErrorResponse } from '../../utils'
 
 export const createResponseFormatter: PutioAPIClientResponseInterceptorFactory = () => ({
@@ -19,7 +18,7 @@ export const createResponseFormatter: PutioAPIClientResponseInterceptorFactory =
     }
 
     let errorData: IPutioAPIClientErrorData = {
-      correlation_id: error.config.headers?.[CORRELATION_ID_HEADER_NAME],
+      'x-trace-id': error.response?.headers['x-trace-id'],
       error_message: error.message,
       error_type: 'ERROR',
       status_code: 0,
diff --git a/src/resources/Files/Files.spec.ts b/src/resources/Files/Files.spec.ts
new file mode 100644
index 0000000..cb61bc2
--- /dev/null
+++ b/src/resources/Files/Files.spec.ts
@@ -0,0 +1,20 @@
+import PutioAPIClient, { isPutioAPIError } from '../../index'
+
+describe('resources/Files/Files', () => {
+  const API = new PutioAPIClient({})
+
+  it('should construct correct payload for Upload method', async () => {
+    try {
+      API.setToken('test-token')
+
+      await API.Files.Upload({
+        file: new File([], 'test'),
+        parentId: 0,
+      })
+    } catch (e) {
+      if (isPutioAPIError(e)) {
+        expect(e.config.headers['Authorization']).toBe(`token test-token`)
+      }
+    }
+  })
+})
diff --git a/src/resources/Files/Files.ts b/src/resources/Files/Files.ts
index 7fd0b3a..267ec7c 100644
--- a/src/resources/Files/Files.ts
+++ b/src/resources/Files/Files.ts
@@ -318,15 +318,22 @@ export default class Files {
     fileName?: string
     parentId?: number
   }) {
-    const FormData = require('form-data')
     const form = new FormData()
     form.append('file', file)
-    form.append('filename', fileName)
-    form.append('parent_id', parentId)
+
+    if (fileName) {
+      form.append('filename', fileName)
+    }
+
+    if (parentId) {
+      form.append('parent_id', parentId.toString())
+    }
 
     return this.client.post('/files/upload', {
       data: form,
-      headers: form.getHeaders(),
+      headers: {
+        'Content-Type': 'multipart/form-data',
+      },
     })
   }
 }
diff --git a/src/test-utils/mocks.ts b/src/test-utils/mocks.ts
index 60c1b79..ca62ff4 100644
--- a/src/test-utils/mocks.ts
+++ b/src/test-utils/mocks.ts
@@ -1,23 +1,20 @@
 import { AxiosError, AxiosRequestConfig } from 'axios'
-import { CORRELATION_ID_HEADER_NAME, NIL_CORRELATION_ID } from '../constants'
 import {
   IPutioAPIClientError,
   IPutioAPIClientErrorData,
   IPutioAPIClientResponse,
 } from '../client/types'
 
-const mockRequestConfig: AxiosRequestConfig = {
-  headers: {
-    [CORRELATION_ID_HEADER_NAME]: NIL_CORRELATION_ID,
-  },
-}
+const mockRequestConfig: AxiosRequestConfig = {}
 
 export const mockPutioAPIClientResponse: IPutioAPIClientResponse<{
   foo: string
 }> = {
   config: mockRequestConfig,
   data: { foo: 'bar', status: 'OK' },
-  headers: {},
+  headers: {
+    'x-trace-id': 'MOCK_TRACE_ID',
+  },
   status: 200,
   statusText: 'ok',
 }
diff --git a/yarn.lock b/yarn.lock
index 6be3a24..649447b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2228,7 +2228,7 @@ colorette@^1.2.2:
   resolved "https://registry.yarnpkg.com/colorette/-/colorette-1.2.2.tgz#cbcc79d5e99caea2dbf10eb3a26fd8b3e6acfa94"
   integrity sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==
 
-combined-stream@^1.0.6, combined-stream@^1.0.8, combined-stream@~1.0.6:
+combined-stream@^1.0.6, combined-stream@~1.0.6:
   version "1.0.8"
   resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
   integrity sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==
@@ -3194,15 +3194,6 @@ forever-agent@~0.6.1:
   resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
   integrity sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=
 
-form-data@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/form-data/-/form-data-3.0.0.tgz#31b7e39c85f1355b7139ee0c647cf0de7f83c682"
-  integrity sha512-CKMFDglpbMi6PyN+brwB9Q/GOw0eAnsrEZDgcsH5Krhz5Od/haKHAX0NmQfha2zPPz0JpWzA7GJHGSnvCRLWsg==
-  dependencies:
-    asynckit "^0.4.0"
-    combined-stream "^1.0.8"
-    mime-types "^2.1.12"
-
 form-data@~2.3.2:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.3.tgz#dcce52c05f644f298c6a7ab936bd724ceffbf3a6"
@@ -6527,11 +6518,6 @@ uuid@^3.3.2:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
   integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
 
-uuid@^8.3.2:
-  version "8.3.2"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
-  integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
-
 v8-compile-cache@^2.0.3:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/v8-compile-cache/-/v8-compile-cache-2.1.1.tgz#54bc3cdd43317bca91e35dcaf305b1a7237de745"