diff --git a/src/dfp.ts b/src/dfp.ts
index ffbde02..e9438e3 100644
--- a/src/dfp.ts
+++ b/src/dfp.ts
@@ -18,7 +18,7 @@ export class DFP {
         this.options = options;
     }
 
-    public async getService(service: string): Promise<DFPClient> {
+    public async getService(service: string, token?: string): Promise<DFPClient> {
         const {apiVersion} = this.options;
         const serviceUrl = `https://ads.google.com/apis/ads/publisher/${apiVersion}/${service}?wsdl`;
         const client = await promiseFromCallback((cb) => createClient(serviceUrl, cb));
@@ -29,6 +29,10 @@ export class DFP {
             client.setSecurity(new BearerSecurity(token));
         };
 
+        if (token) {
+            client.setToken(token);
+        }
+
         return new Proxy(client, {
             get: function get(target, propertyKey) {
                 const method = propertyKey.toString();