diff --git a/doc/snac.8 b/doc/snac.8
index 4757092..e26130d 100644
--- a/doc/snac.8
+++ b/doc/snac.8
@@ -124,6 +124,8 @@ Entries in the timeline older that this number of days are purged.
 This is a list of URLs to CSS files that will be inserted, in this order,
 in the HTML before the user CSS. Use these files to configure the global
 site layout.
+.It Ic disable_cache
+If set to true, timeline caching is not done.
 .El
 .Pp
 You must restart the server to make effective these changes.