debian/changelog

+circos-tools (0.22-3) UNRELEASED; urgency=medium
+
+  * Use secure copyright file specification URI.
+  * Trim trailing whitespace.
+
+ -- Jelmer Vernooij <jelmer@debian.org>  Sat, 20 Oct 2018 13:40:16 +0000
+
 circos-tools (0.22-2) unstable; urgency=medium
 
   * Move packaging from SVN to Git

debian/copyright

-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: circos-tools
 Source: http://circos.ca/distribution/circos-tools-0.16.tgz