diff --git a/man/aptly.1 b/man/aptly.1
index 9196db41..26c64b4e 100644
--- a/man/aptly.1
+++ b/man/aptly.1
@@ -1607,6 +1607,13 @@ Example:
 .P
 $ aptly graph
 .
+.P
+Options:
+.
+.TP
+\-\fBformat\fR=png
+render graph to specified format (png, svg, pdf, etc\.)
+.
 .SH "SHOW CURRENT APTLY\(cqS CONFIG"
 \fBaptly\fR \fBconfig\fR \fBshow\fR
 .