diff --git a/public/_headers b/public/_headers
index 8c38706a5..ed88e9a22 100644
--- a/public/_headers
+++ b/public/_headers
@@ -1,2 +1,2 @@
 /_astro/*
-  Cache-Control: public, max-age=604800, immutable
+  Cache-Control: public, max-age=31536000, immutable