diff --git a/serve.json b/serve.json
index 0ce65b6..06f578d 100644
--- a/serve.json
+++ b/serve.json
@@ -14,7 +14,7 @@
       "source" : "**/*.css",
       "headers" : [{
         "key" : "Cache-Control",
-        "value" : "max-age=86400"
+        "value" : "max-age=31536000"
       }]
     },
     {