diff --git a/ghost/admin/app/components/gh-image-uploader.js b/ghost/admin/app/components/gh-image-uploader.js
index 5870c8d8fd..ac1157971c 100644
--- a/ghost/admin/app/components/gh-image-uploader.js
+++ b/ghost/admin/app/components/gh-image-uploader.js
@@ -15,8 +15,8 @@ import {isArray as isEmberArray} from '@ember/array';
 import {run} from '@ember/runloop';
 import {inject as service} from '@ember/service';
 
-export const IMAGE_MIME_TYPES = 'image/gif,image/jpg,image/jpeg,image/png,image/svg+xml';
-export const IMAGE_EXTENSIONS = ['gif', 'jpg', 'jpeg', 'png', 'svg'];
+export const IMAGE_MIME_TYPES = 'image/gif,image/jpg,image/jpeg,image/png,image/svg+xml,image/webp';
+export const IMAGE_EXTENSIONS = ['gif', 'jpg', 'jpeg', 'png', 'svg', 'webp'];
 export const IMAGE_PARAMS = {purpose: 'image'};
 
 export const ICON_EXTENSIONS = ['ico', 'png'];