diff --git a/src/components/RentDivisionPuzzle.tsx b/src/components/RentDivisionPuzzle.tsx
index 0df46c9..b06a5b1 100644
--- a/src/components/RentDivisionPuzzle.tsx
+++ b/src/components/RentDivisionPuzzle.tsx
@@ -46,11 +46,10 @@ const RentDivisionPuzzle = ({ onComplete }: RentDivisionPuzzleProps) => {
   const rentDiff = totalRent - currentTotal;
 
   // Compute U-matrix: utility[agent][room] = valuation - rent
-  const utilities = useMemo(() => {
-    return valuations.map((agentVals) =>
-      agentVals.map((v, roomIdx) => v - rents[roomIdx])
-    );
-  }, [valuations, rents]);
+  // Computed directly to ensure reactivity when rents change
+  const utilities = valuations.map((agentVals) =>
+    agentVals.map((v, roomIdx) => v - rents[roomIdx])
+  );
 
   // Find envy relationships
   const envyInfo = useMemo(() => {