docs: note usage of UPDATE_DRYRUN

1 files changed, 8 insertions, 0 deletions

diff --git a/index.html b/index.html
index bfdd304..cbfb462 100644
--- a/index.html
+++ b/index.html
@@ -1051,6 +1051,14 @@ local-pkg-list: $(LOCAL_PKG_LIST)</pre>
         download the new versions and note their checksums
         </dd>
 
+    <dt>make update UPDATE_DRYRUN=true</dt>
+
+        <dd>
+        for internal use only!
+        &ndash;
+        show list of update candidates without downloading
+        </dd>
+
     <dt>make update-package-foo</dt>
 
         <dd>