diff --git a/next.config.js b/next.config.js
index d66066bea..513a9b5cb 100644
--- a/next.config.js
+++ b/next.config.js
@@ -45,7 +45,8 @@ module.exports = withSentryConfig(
                 {
                     protocol: 'https',
                     hostname: '*.gitbook.io',
-                }
+                    port: '',
+                },
             ]
         }
     },