diff --git a/71.Install_a_cache/default b/71.Install_a_cache/default
index 4599bd05c9339d9c4b8311348e9cb66e770c5800..18b06620dd300cda33fee72cb965e0f4728611eb 100644
--- a/71.Install_a_cache/default
+++ b/71.Install_a_cache/default
@@ -24,7 +24,7 @@ server {
             proxy_ignore_headers X-Accel-Expires;
             proxy_ignore_headers Expires;
             proxy_hide_header Pragma;
-            expires -1;
+            expires 1s;
             add_header X-Cache $upstream_cache_status;
             proxy_cache_use_stale updating;
             proxy_cache_min_uses 1;
@@ -56,7 +56,7 @@ server {
             proxy_ignore_headers X-Accel-Expires;
             proxy_ignore_headers Expires;
             proxy_hide_header Pragma;
-            expires -1;
+            expires 7d;
             add_header X-Cache $upstream_cache_status;
             proxy_cache_use_stale updating;
             proxy_cache_min_uses 1;
@@ -88,7 +88,7 @@ server {
             proxy_ignore_headers X-Accel-Expires;
             proxy_ignore_headers Expires;
             proxy_hide_header Pragma;
-            expires -1;
+            expires 7d;
             add_header X-Cache $upstream_cache_status;
             proxy_cache_use_stale updating;
             proxy_cache_min_uses 1;
@@ -132,7 +132,7 @@ server {
             proxy_ignore_headers X-Accel-Expires;
             proxy_ignore_headers Expires;
             proxy_hide_header Pragma;
-            expires -1;
+            expires 7d;
             add_header X-Cache $upstream_cache_status;
             proxy_cache_use_stale updating;
             proxy_cache_min_uses 1;