diff --git a/debian/copyright b/debian/copyright
index cf68d85..acacd50 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/
 
 Files: *
 Copyright: 2016-2017 Michael van Tellingen