diff --git a/debian/copyright b/debian/copyright
index 73598a8..df40444 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: Microba controls
 Upstream-Contact: Michael Baranov
 Source: http://sourceforge.net/projects/microba/