diff --git a/manifest.toml b/manifest.toml
index 427fa5b..e3cc8b2 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -60,7 +60,7 @@ ram.runtime = "50M"
     [resources.permissions]
     main.url = "/"
     api.url = "/api"
-    api.additional_urls = "/scripts/api.js"
+    api.additional_urls = ["/scripts/api.js"]
     api.allowed = "visitors"
     api.auth_header = false
     api.show_tile = false