diff --git a/core/shared/config/defaults.json b/core/shared/config/defaults.json
index 878e142766..cf08858b9c 100644
--- a/core/shared/config/defaults.json
+++ b/core/shared/config/defaults.json
@@ -128,7 +128,7 @@
         "emailAnalytics": true
     },
     "portal": {
-        "url": "https://unpkg.com/@tryghost/portal@~1.20.0/umd/portal.min.js",
+        "url": "https://unpkg.com/@tryghost/portal@~1.21.0/umd/portal.min.js",
         "version": "1.20"
     },
     "tenor": {