diff --git a/libthai.spec b/libthai.spec
index 2dad05d..ff4134f 100644
--- a/libthai.spec
+++ b/libthai.spec
@@ -23,7 +23,7 @@ Summary:        Thai Language Support Routines
 License:        LGPL-2.1+
 Group:          System/Libraries
 Url:            http://linux.thai.net/plone/TLWG/libthai/
-Source:         http://linux.thai.net/pub/thailinux/software/libthai/%{name}-%{version}.tar.xz
+Source:         https://linux.thai.net/pub/thailinux/software/libthai/%{name}-%{version}.tar.xz
 Source99:       baselibs.conf
 BuildRequires:  libdatrie-devel
 BuildRequires:  pkg-config