diff --git a/gorge.js b/gorge.js
index 04a0a79..2434728 100644
--- a/gorge.js
+++ b/gorge.js
@@ -94,7 +94,9 @@ function updateProductivity() {
 }
 
 function addResources(delta) {
-  resources.food += currentProductivity["food"] * delta / 1000;
+  for (const [resource, amount] of Object.entries(currentProductivity)) {
+    resources[resource] += amount * delta / 1000;
+  }
 }
 
 function displayResources() {