diff --git a/libisofs.spec b/libisofs.spec
index f396e9d..dadfdd2 100644
--- a/libisofs.spec
+++ b/libisofs.spec
@@ -6,9 +6,9 @@ Version:        1.5.4
 Release:        1%{?dist}
 # make_isohybrid_mbr.c is under LGPLv2+, the rest under GPLv2+
 License:        GPLv2+ and LGPLv2+
-URL:            http://libburnia-project.org/
-Source0:        http://files.libburnia-project.org/releases/%{pkgname}-%{version}.tar.gz
-Source1:        http://files.libburnia-project.org/releases/%{pkgname}-%{version}.tar.gz.sig
+URL:            https://libburnia-project.org/
+Source0:        https://files.libburnia-project.org/releases/%{pkgname}-%{version}.tar.gz
+Source1:        https://files.libburnia-project.org/releases/%{pkgname}-%{version}.tar.gz.sig
 Source2:        gpgkey-44BC9FD0D688EB007C4DD029E9CBDFC0ABC0A854.gpg
 Patch0:         libisofs-0.6.16-multilib.patch
 BuildRequires:  gnupg2