diff --git a/src/server_manager/electron_app/index.ts b/src/server_manager/electron_app/index.ts
index ceedd7f0..67268376 100644
--- a/src/server_manager/electron_app/index.ts
+++ b/src/server_manager/electron_app/index.ts
@@ -147,9 +147,8 @@ function getWebAppUrl() {
 // status code and inject CORS response headers.
 function workaroundDigitalOceanApiCors() {
   const headersFilter = {urls: ['https://api.digitalocean.com/*']};
-  electron.session.defaultSession.webRequest.onHeadersReceived(
-      // tslint:disable-next-line:no-any
-      headersFilter, (details: electron.OnHeadersReceivedListenerDetails, callback: (response: any) => void) => {
+  electron.session.defaultSession.webRequest.onHeadersReceived(headersFilter,
+      (details: electron.OnHeadersReceivedListenerDetails, callback: (response: electron.CallbackResponse) => void) => {
         if (details.method === 'OPTIONS') {
           details.responseHeaders['access-control-allow-origin'] = 'outline://web_app';
           if (details.statusCode === 403) {
@@ -165,7 +164,7 @@ function workaroundDigitalOceanApiCors() {
             details.responseHeaders['access-control-max-age'] = '86400';
           }
         }
-        callback(details);
+        callback(details as electron.CallbackResponse);
       });
 }