diff --git a/package.json b/package.json
index 964b9c9..8a77178 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
 		"abort-controller": "^3.0.0",
 		"async": "^3.2.0",
 		"form-data": "^4.0.0",
+		"lodash": "^4.17.21",
 		"node-fetch": "^2.6.1",
 		"ws": "^7.5.2"
 	},
@@ -55,6 +56,7 @@
 		"@types/async": "^3",
 		"@types/chai": "^4.2.19",
 		"@types/eslint": "^7.2.13",
+		"@types/lodash": "^4",
 		"@types/mocha": "^8.2.2",
 		"@types/node": "^15.14.0",
 		"@types/node-fetch": "^2.5.10",
diff --git a/src/api/apiHandler.ts b/src/api/apiHandler.ts
index a1802ff..d678a24 100644
--- a/src/api/apiHandler.ts
+++ b/src/api/apiHandler.ts
@@ -1,7 +1,7 @@
 import { AbortController } from 'abort-controller';
 import { queue, QueueObject } from 'async';
 import FormData from 'form-data';
-import fetch from 'node-fetch';
+import fetch, { Headers } from 'node-fetch';
 
 import type { DeepRequired, IApiClientOptions, IMakeRequestOptions } from '../utils/types';
 
@@ -21,24 +21,25 @@ export class ApiHandler {
 	}
 
 	public get baseApiUrl(): string {
-		return `${this.options.apiUrl}/${this.options.apiVersion}`;
+		return `${this.options.apiUrl}/v${this.options.apiVersion}`;
 	}
 
 	public async makeRequest<T>(options: IMakeRequestOptions): Promise<T> {
-		let headers: Record<string, unknown> = options.headers ?? {};
+		const headers: Headers = new Headers();
 
-		if (options.requireAuth) headers['Authorization'] = `Bot ${this._token}`;
-		if (options.reason) headers['X-Audit-Log-Reason'] = encodeURIComponent(options.reason);
+		if (options.headers) for (const prop in options.headers) headers.set(prop, options.headers[prop]!);
+
+		if (options.requireAuth) headers.set('Authorization', `Bot ${this._token}`);
+		if (options.reason) headers.set('X-Audit-Log-Reason', encodeURIComponent(options.reason));
 
 		let body: FormData | string;
 		if (options.files && options.files.length) {
 			body = new FormData();
 			for (const file of options.files) if (file && file.file) body.append(file.name, file.file, file.name);
 			if (options.body) body.append('payload_json', JSON.stringify(options.body));
-			headers = Object.assign(headers, body.getHeaders());
 		} else if (options.body) {
 			body = JSON.stringify(options.body);
-			headers['Content-Type'] = 'application/json';
+			headers.set('Content-Type', 'application/json');
 		}
 
 		const controller = new AbortController();
@@ -47,7 +48,7 @@ export class ApiHandler {
 		try {
 			// eslint-disable-next-line @typescript-eslint/ban-ts-comment
 			// @ts-ignore
-			const res = await fetch(`${this.baseApiUrl}/${options.path}`, { method: options.method, headers, signal: controller.signal, body });
+			const res = await fetch(`${this.baseApiUrl}${options.path}`, { method: options.method, headers, signal: controller.signal, body });
 
 			// TODO: handle Ratelimits
 
diff --git a/src/client/client.ts b/src/client/client.ts
index c98926a..73ac269 100644
--- a/src/client/client.ts
+++ b/src/client/client.ts
@@ -1,3 +1,5 @@
+import _ from 'lodash';
+
 import { ApiClient } from '../api/apiClient';
 import { defaults } from '../utils/defaults';
 
@@ -10,7 +12,7 @@ export class Client {
 	private _token: string;
 
 	public constructor(token: string, options: IClientOptions = {}) {
-		this.options = Object.assign(defaults.clientOptions, options as DeepRequired<IClientOptions>);
+		this.options = _.merge(defaults.clientOptions, options as DeepRequired<IClientOptions>);
 		this._token = token;
 
 		this.api = new ApiClient(this._token, this.options.api);
diff --git a/yarn.lock b/yarn.lock
index 94b1499..147e292 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -549,6 +549,7 @@ __metadata:
     "@types/async": ^3
     "@types/chai": ^4.2.19
     "@types/eslint": ^7.2.13
+    "@types/lodash": ^4
     "@types/mocha": ^8.2.2
     "@types/node": ^15.14.0
     "@types/node-fetch": ^2.5.10
@@ -573,6 +574,7 @@ __metadata:
     husky: ^7.0.0
     inquirer: ^8.1.1
     lint-staged: ^11.0.0
+    lodash: ^4.17.21
     mocha: ^9.0.1
     node-fetch: ^2.6.1
     nyc: ^15.1.0
@@ -1243,6 +1245,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/lodash@npm:^4":
+  version: 4.14.170
+  resolution: "@types/lodash@npm:4.14.170"
+  checksum: 238a440804e787b85461cc280a11926c80779f7502fec21a70b4424d5feba4cc34cdcbbbc1dca2ec5e75b06d5dc42e42add798be3b6651e8dce9f4b5318d6022
+  languageName: node
+  linkType: hard
+
 "@types/minimatch@npm:*":
   version: 3.0.4
   resolution: "@types/minimatch@npm:3.0.4"