diff --git a/debian/changelog b/debian/changelog
index 9c4595a..e4adebf 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+logbook (1.3.0-4) UNRELEASED; urgency=medium
+
+  * d/copyright: Use https protocol in Format field
+
+ -- Ondřej Nový <onovy@debian.org>  Mon, 01 Oct 2018 10:22:34 +0200
+
 logbook (1.3.0-3) unstable; urgency=medium
 
   [ Iñaki Malerba ]
diff --git a/debian/copyright b/debian/copyright
index dc6a289..f3476e4 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,4 +1,4 @@
-Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: logbook
 Upstream-Contact: Armin Ronacher <armin.ronacher@active-4.com> or Georg Brandl
 Source: https://github.com/mitsuhiko/logbook