diff --git a/src/env/schema.mjs b/src/env/schema.mjs
index 4cbffaf..9df5544 100644
--- a/src/env/schema.mjs
+++ b/src/env/schema.mjs
@@ -15,4 +15,5 @@ export const serverSchema = z.object({
   MAX_DISTANCE: z.coerce.number().positive(),
   CENTER_LATITUDE: z.coerce.number().min(-90).max(90),
   CENTER_LONGITUDE: z.coerce.number().min(-180).max(180),
+  EDGE_CACHE_TIME_SECONDS: z.coerce.number().int().nonnegative().default(60),
 });
diff --git a/src/env/server.mjs b/src/env/server.mjs
index 6f7d50b..6a324aa 100644
--- a/src/env/server.mjs
+++ b/src/env/server.mjs
@@ -16,6 +16,7 @@ const _serverEnv = serverSchema.safeParse({
   MAX_DISTANCE: process.env.MAX_DISTANCE,
   CENTER_LATITUDE: process.env.CENTER_LATITUDE,
   CENTER_LONGITUDE: process.env.CENTER_LONGITUDE,
+  EDGE_CACHE_TIME_SECONDS: process.env.EDGE_CACHE_TIME_SECONDS,
 });
 
 if (_serverEnv.success === false) {
diff --git a/src/pages/api/cron.ts b/src/pages/api/cron.ts
index 8485b75..8b03eb4 100644
--- a/src/pages/api/cron.ts
+++ b/src/pages/api/cron.ts
@@ -20,10 +20,11 @@ export default async function handler(
     return;
   }
 
+  
   const diff = await getDistance();
 
   // auth passed
-  res.setHeader('Cache-Control', 'max-age=0, s-maxage=60, stale-while-revalidate');
+  res.setHeader('Cache-Control', `max-age=0, s-maxage=${env.EDGE_CACHE_TIME_SECONDS}, stale-while-revalidate`);
   // @ts-ignore
   res.status(200).json({ diff, inRange: diff < env.MAX_DISTANCE });
 }