diff --git a/manifest.toml b/manifest.toml
index aa5ce1f..8149b58 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -58,3 +58,8 @@ ram.runtime = "50M"
     [resources.ports]
     main.default = 9494
 
+    [resources.apt]
+    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"
+