update expire time
diff --git a/.htaccess b/.htaccess
index cf54a7b..ef37cad 100644
--- a/.htaccess
+++ b/.htaccess
@@ -1,5 +1,9 @@
 <IfModule mod_expires.c>
   ExpiresActive on
 
+  ExpiresByType text/html                 "access plus 1 hour"
+  ExpiresByType image/png                 "access plus 1 hour"
+  ExpiresByType image/jpg                 "access plus 1 hour"
+  ExpiresByType image/jpeg                "access plus 1 hour"
   ExpiresDefault                          "access plus 30 days"
 </IfModule>