diff --git a/server.js b/server.js
index 43f7aa7..6395477 100644
--- a/server.js
+++ b/server.js
@@ -8,7 +8,11 @@ import { IS_PROD, BIND, PORT, LIMIT_SIZE } from "./src/constants.js";
 const app = new Koa();
 
 // static server
-app.use(serve(IS_PROD ? "./static/dist" : "./static"));
+app.use(
+  serve(IS_PROD ? "./static/dist" : "./static", {
+    maxAge: 2592000 * 1000, // 30d in milliseconds
+  })
+);
 
 // views
 render(app, {
diff --git a/src/routes.js b/src/routes.js
index 9cf97df..aa39810 100644
--- a/src/routes.js
+++ b/src/routes.js
@@ -32,6 +32,7 @@ router.get("/:uuid{.:ext}", async (ctx, next) => {
     return await ctx.render("view", gist);
   }
 
+  ctx.set("Cache-Control", "max-age=2592000"); // 30d in seconds
   ctx.set("X-IV", gist.iv);
   ctx.body = Buffer.from(gist.cipherText);
 });