diff --git a/README.rdoc b/README.rdoc
index c1dc8416d69c9a4de23dd7c04d21820c496a23e7..a82ad48f9d920e55d5694cf106c66eab1d29880b 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -384,6 +384,7 @@ This example uses Redis, but the cache store can be any object that supports the
 * <tt>store#[](key)</tt>         - retrieves a value
 * <tt>store#[]=(key, value)</tt> - stores a value
 * <tt>store#keys</tt>            - lists all keys
+* <tt>store#del(url)</tt>        - deletes a value
 
 Even a plain Ruby hash will work, though it's not a great choice (cleared out when app is restarted, not shared between app instances, etc).