    (, int256 answer,,,) = oracle.latestRoundData();
-   (, int256 answer,,,) = oracle.latestRoundData();
+   (, int256 answer,,updatedAt,) = oracle.latestRoundData();


+   if (updatedAt < block.timestamp - MAX_DELAY) {
+       revert();
+   }
    
    if (answer < 0) {
        return _MIN_RATE_COUPON;
    }
