diff --git a/manifest.toml b/manifest.toml
index 6757ccd..4fabeb6 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -57,7 +57,6 @@ ram.runtime = "50M"
     main.url = "/"
 
     [resources.apt]
-        [resources.apt.extras]
-        repo = "deb https://dl.yarnpkg.com/debian/ stable main"
-        key = "https://dl.yarnpkg.com/debian/pubkey.gpg"
-        packages = "yarn"
+    extras.yarn.repo = "deb https://dl.yarnpkg.com/debian/ stable main"
+    extras.yarn.key = "https://dl.yarnpkg.com/debian/pubkey.gpg"
+    extras.yarn.packages = "yarn"