diff --git a/doc/arkdep.8 b/doc/arkdep.8
index d081151..401c4ee 100644
--- a/doc/arkdep.8
+++ b/doc/arkdep.8
@@ -22,6 +22,8 @@ Remove any hanging images, unfinished downloads and untracked deployments.
 Check for and report any config issues or untracked deployments.
 .SS get-available
 Get and print available variants in repo.
+.SS get-update
+Get and print diff between current active development and the latest one provided by the repository.
 .SS remove
 Remove specified deployments.
 .SH ENVIRONMENT