diff --git a/libisofs-1.5.0.tar.gz b/libisofs-1.5.0.tar.gz
deleted file mode 100644
index 9358ef3..0000000
--- a/libisofs-1.5.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:da5f9de3085dd7e34f3bfa73bef4f6380253b839c7aa9aa8ae66f1e1a61a3400
-size 834099
diff --git a/libisofs-1.5.2.tar.gz b/libisofs-1.5.2.tar.gz
new file mode 100644
index 0000000..44a8a75
--- /dev/null
+++ b/libisofs-1.5.2.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ef5a139600b3e688357450e52381e40ec26a447d35eb8d21524598c7b1675500
+size 857346
diff --git a/libisofs-1.5.2.tar.gz.asc b/libisofs-1.5.2.tar.gz.asc
new file mode 100644
index 0000000..af67dd8
--- /dev/null
+++ b/libisofs-1.5.2.tar.gz.asc
@@ -0,0 +1,8 @@
+-----BEGIN PGP ARMORED FILE-----
+Version: GnuPG v1
+Comment: Use "gpg --dearmor" for unpacking
+
+iEYEABECAAYFAl20UVkACgkQ6cvfwKvAqFQhvwCeMdymDUKkqQzL5MqM5pfK21BZ
+b7AAoL0mMPmF+301MdTJQqBA5wHUi566
+=nCDL
+-----END PGP ARMORED FILE-----
diff --git a/libisofs.changes b/libisofs.changes
index 19365b5..fee9c9c 100644
--- a/libisofs.changes
+++ b/libisofs.changes
@@ -1,3 +1,25 @@
+-------------------------------------------------------------------
+Mon Apr 27 18:00:48 UTC 2020 - Luigi Baldoni <aloisio@gmx.com>
+
+- Update to version 1.5.2
+  * New API calls iso_write_opts_set_part_type_guid(),
+    iso_write_opts_set_iso_type_guid()
+  * New API call iso_nowtime()
+  * New flag bit2 of iso_node_set_acl_text() to be verbous about
+    failures
+  * Made libisofs ready for building out-of-source.
+  * Bug fix: Appended GPT partitions were not covered by the
+    protective MBR partition
+  * Bug fix: Multi-session emulation spoiled GPT production.
+    "GPT partitions ... overlap". Regression towards 1.4.8
+  * Bug fix: Appending partitions 5 to 8 caused damaged ISO
+    filesystems if not for SUN disk label
+  * Bug fix: SIGSEGV happened if options bit 14 of
+    iso_write_opts_set_system_area() is set and no El Torito
+    boot image is defined
+- Add signature and keyring as sources
+- Spec cleanup
+
 -------------------------------------------------------------------
 Wed Oct 24 16:13:32 UTC 2018 - sean@suspend.net
 
diff --git a/libisofs.keyring b/libisofs.keyring
new file mode 100644
index 0000000..dd25a32
--- /dev/null
+++ b/libisofs.keyring
@@ -0,0 +1,29 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+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+=RI+/
+-----END PGP PUBLIC KEY BLOCK-----
diff --git a/libisofs.spec b/libisofs.spec
index c3cc43d..6364bc1 100644
--- a/libisofs.spec
+++ b/libisofs.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package libisofs
 #
-# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -18,21 +18,21 @@
 
 %define so_ver 6
 Name:           libisofs
-Version:        1.5.0
+Version:        1.5.2
 Release:        0
 Summary:        Library for Creating ISO-9660 Filesystems
 License:        GPL-2.0-or-later AND LGPL-2.0-or-later
 Group:          Productivity/Multimedia/CD/Record
-Url:            http://libburnia-project.org/
+URL:            http://libburnia-project.org/
 Source0:        http://files.libburnia-project.org/releases/%{name}-%{version}.tar.gz
+Source1:        http://files.libburnia-project.org/releases/%{name}-%{version}.tar.gz.asc
+Source2:        %{name}.keyring
 BuildRequires:  doxygen
 BuildRequires:  fdupes
-BuildRequires:  libacl-devel
 BuildRequires:  pkgconfig
-BuildRequires:  zlib-devel
-%if 0%{?suse_version} > 1320 || (0%{?is_opensuse} && 0%{?sle_version} >= 120300)
-BuildRequires:  libjte-devel
-%endif
+BuildRequires:  pkgconfig(libacl)
+BuildRequires:  pkgconfig(libjte-1)
+BuildRequires:  pkgconfig(zlib)
 
 %description
 Libisofs is a library for creating ISO-9660 filesystems with extensions like
@@ -89,7 +89,7 @@ chmod 644 doc/Tutorial
 
 %build
 %configure --disable-static
-make %{?_smp_mflags}
+%make_build
 doxygen doc/doxygen.conf
 
 %install
@@ -111,7 +111,8 @@ cp -a doc/html/ %{buildroot}%{_docdir}/%{name}-devel/
 %postun -n libisofs%{so_ver} -p /sbin/ldconfig
 
 %files devel
-%doc AUTHORS COPYING COPYRIGHT ChangeLog NEWS README Roadmap TODO
+%license COPYING COPYRIGHT
+%doc AUTHORS ChangeLog NEWS README Roadmap TODO
 %doc doc/{Tutorial,checksums.txt,susp_aaip_2_0.txt,susp_aaip_isofs_names.txt,zisofs_format.txt}
 %doc %{_docdir}/%{name}-devel/html/
 %{_includedir}/libisofs/