diff --git a/debian/changelog b/debian/changelog
index bbe9ff3..b4b4f4e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -4,6 +4,7 @@
   * Document in README.Debian how to disable dillo's debug messages.
   * Declare compliance with Debian Policy 3.9.8.
   * Switch Vcs-Git header from git:// to https://.
+  * Switch DEP5 format header from http:// to https://.
 
  -- Axel Beckert <abe@debian.org>  Fri, 13 May 2016 14:31:49 +0200
 
diff --git a/debian/copyright b/debian/copyright
index 21d23fc..b197e02 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: Dillo
 Source: http://www.dillo.org/
 License: GPL-3+