diff --git a/debian/changelog b/debian/changelog
index 4c22879..0831dd2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,7 @@
 
   * d/control: Remove ancient X-Python-Version field
   * d/control: Remove ancient X-Python3-Version field
+  * d/copyright: Use https protocol in Format field
 
  -- Ondřej Nový <onovy@debian.org>  Mon, 01 Oct 2018 09:41:33 +0200
 
diff --git a/debian/copyright b/debian/copyright
index 4d50dea..14d4c06 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: python-cbor
 Upstream-Contact: https://bitbucket.org/bodhisnarkva/cbor
 Source: https://bitbucket.org/bodhisnarkva/cbor