1 files changed, 1 insertions, 0 deletions
diff --git a/doc/apt.8 b/doc/apt.8
index 6c14559e3..78e4f0a70 100644
--- a/doc/apt.8
+++ b/doc/apt.8
@@ -37,6 +37,7 @@ None.
 .BR apt-get (8),
 .BR apt.conf (5),
 .BR sources.list (5),
+.BR apt_preferences (5),
 .BR apt-secure (8)
 .SH DIAGNOSTICS
 apt returns zero on normal operation, decimal 100 on error.