diff --git a/vercel.json b/vercel.json
index c71d8f78..99753325 100644
--- a/vercel.json
+++ b/vercel.json
@@ -42,7 +42,7 @@
 			"headers": [
 				{
 					"key": "Content-Security-Policy",
-					"value": "default-src 'self';base-uri 'self';font-src 'self';form-action 'self';frame-ancestors 'self';frame-src https:;img-src 'self' https: data:;object-src 'none';script-src 'self' 'unsafe-inline';script-src-attr 'none';style-src 'self' 'unsafe-inline';upgrade-insecure-requests"
+					"value": "default-src 'self';base-uri 'self';form-action 'self' https://app.convertkit.com;frame-ancestors 'none';frame-src https:;img-src 'self' https: data:;object-src 'none';script-src 'self' 'unsafe-inline';script-src-attr 'none';style-src-attr 'unsafe-inline';upgrade-insecure-requests"
 				},
 				{
 					"key": "Cross-Origin-Opener-Policy",