diff --git a/debian/copyright b/debian/copyright
index d865926..20863e3 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -1,7 +1,7 @@
 Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: MATE Session Manager
 Upstream-Contact: Martin Wimpress <martin@mate-desktop.org>
-Source: http://git.mate-desktop.org/mate-session-manager/
+Source: https://git.mate-desktop.org/mate-session-manager/
 
 Files: mate-session/gs-idle-monitor.c
        mate-session/gs-idle-monitor.h