diff --git a/debian/changelog b/debian/changelog
index e3744a5..8370560 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -9,6 +9,7 @@
   [ Andreas Tille ]
   * Standards-Version: 4.5.0 (routine-update)
   * debhelper-compat 12 (routine-update)
+  * Secure URI in copyright format (routine-update)
 
  -- Andreas Tille <tille@debian.org>  Wed, 29 Apr 2020 22:52:39 +0200
 
diff --git a/debian/copyright b/debian/copyright
index 51cea7c..7e111f6 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: Glimmer
 Upstream-Contact: Art Delcher <adelcher@tigr.org>,
                   Steven Salzberg <salzberg@tigr.org>