diff --git a/SPECS/gtk3.spec b/SPECS/gtk3.spec
index 35ab417..11fd185 100644
--- a/SPECS/gtk3.spec
+++ b/SPECS/gtk3.spec
@@ -27,7 +27,7 @@ Summary: GTK+ graphical user interface library
 
 License: LGPLv2+
 URL: http://www.gtk.org
-Source0: http://download.gnome.org/sources/gtk+/3.22/gtk+-%{version}.tar.xz
+Source0: https://download.gnome.org/sources/gtk+/3.22/gtk+-%{version}.tar.xz
 
 # rhbz#1656447 / https://gitlab.gnome.org/GNOME/gtk/issues/1507
 Patch1: 0001-a11y-Check-X11-display-at-runtime.patch