diff --git a/pages/feed.xml.tsx b/pages/feed.xml.tsx
index 59b4b05..09aae1e 100644
--- a/pages/feed.xml.tsx
+++ b/pages/feed.xml.tsx
@@ -17,7 +17,7 @@ export const getServerSideProps: GetServerSideProps = async ({ req, res }) => {
   }
 
   const siteMap = await getSiteMap()
-  const ttlMinutes = 60
+  const ttlMinutes = 24 * 60 // 24 hours
   const ttlSeconds = ttlMinutes * 60
 
   const feed = new RSS({