diff --git a/debian/changelog b/debian/changelog
index 3c71e51..042d01c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -8,6 +8,9 @@
 
   [ Dylan Aïssi ]
   * Fix OMICS ID
+
+  [ Sascha Steinbiss ]
+  * Use secure d/copyright format link.
 
  -- Sascha Steinbiss <satta@debian.org>  Wed, 04 Jul 2018 18:52:50 +0200
 
diff --git a/debian/copyright b/debian/copyright
index 5de4039..4fa402f 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: codonW
 Source: http://sourceforge.net/projects/codonw/
 Files-Excluded: CVS