diff --git a/libvirt-glib-3.0.0.tar.gz b/libvirt-glib-3.0.0.tar.gz
deleted file mode 100644
index c792ac6..0000000
--- a/libvirt-glib-3.0.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7fff8ca9a2b723dbfd04223b1c7624251c8bf79eb57ec27362a7301b2dd9ebfe
-size 899180
diff --git a/libvirt-glib-3.0.0.tar.gz.asc b/libvirt-glib-3.0.0.tar.gz.asc
deleted file mode 100644
index 93f7e41..0000000
--- a/libvirt-glib-3.0.0.tar.gz.asc
+++ /dev/null
@@ -1,16 +0,0 @@
------BEGIN PGP SIGNATURE-----
-
-iQIzBAABCAAdFiEE2vOm/bJrYpEtDo4/vobrtBUQT98FAl3dIx8ACgkQvobrtBUQ
-T98bDw//Ql/NvGbfKs1R2dJz24g8MkIR8FUBMAUhpdfAStryf9ZcaTaNBo6k2Wzd
-aMpnr/NfE7ZRZ1ws1hseYqXgqn72cxnoKW5dIr6zdrORF01U/5bqjQPMq7+q0LIq
-/VMmNULNsSofbV4C3HEgUbigINO5xKN3TzefuIzSI1c3mu+JmhWVY6HzBcg3gyrI
-kPHw8AuHaGXvqTFYifZ08OjZdEJK6Wwx1uzUsAemxRRVtfRtnfd4UUu09v2jn/E/
-RKYbsFec+EnYLt8fwT0qjiVJIiJWo8MNqB3JnEE7B26w6TDaGKBqypp4Y1WHp8It
-HQO+HygHSB5SM6YUmUnK1tofmztBs6r1hDZKum72ORWQQ0F4fSGsb9mxdFtlpHcI
-xicNUl7NWjzi1JkXle06gqMIlJSMWfdgFdHtzGfTlXNcqoObMz7pAnFvPQH9Mhly
-1Q59a4aXjA+Qiz4RsljMO30CUCc21cnu+J0hCABw0tRslLs+k0nLgH+W8JmZXNOO
-NxQywJWMgAwfxIzr20+GopXOXC3ch2s7SMXIAV2E9l3tA4FllZwL9nsX3Eg5gEb/
-5zaoGtuLsKEsOTX5CM6vmF6y5o3hXQOHnBXnPZYivw/EfC6rCwiakdnkqNw1k6nD
-ZPvAIdjIyhYr5uBP3vlsYbhvR3/ZujP22jHa8dWvBbu3dVxC78Y=
-=BCy/
------END PGP SIGNATURE-----
diff --git a/libvirt-glib-4.0.0.tar.xz b/libvirt-glib-4.0.0.tar.xz
new file mode 100644
index 0000000..5e0882f
--- /dev/null
+++ b/libvirt-glib-4.0.0.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8423f7069daa476307321d1c11e2ecc285340cd32ca9fc05207762843edeacbd
+size 161836
diff --git a/libvirt-glib-4.0.0.tar.xz.asc b/libvirt-glib-4.0.0.tar.xz.asc
new file mode 100644
index 0000000..6b8f41f
--- /dev/null
+++ b/libvirt-glib-4.0.0.tar.xz.asc
@@ -0,0 +1,16 @@
+-----BEGIN PGP SIGNATURE-----
+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+=vXoX
+-----END PGP SIGNATURE-----
diff --git a/libvirt-glib.changes b/libvirt-glib.changes
index 1f883e2..560a6c6 100644
--- a/libvirt-glib.changes
+++ b/libvirt-glib.changes
@@ -1,3 +1,25 @@
+-------------------------------------------------------------------
+Fri Mar 19 09:53:59 UTC 2021 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Update to version 4.0.0:
+  + Replace autotools build system with meson.
+  + Mandate libvirt >= 1.2.8.
+  + Mandate libxml2 >= 2.9.1.
+  + Mandate glib >= 2.48.0.
+  + Mandate gobject-introspection >= 1.46.0.
+  + Fix docs incompatibility with gtk-doc >= 1.30.
+  + Misc API docs fixes.
+  + Add constants related to NVRAM during domain delete.
+  + Add domain config API for controller ports attribute.
+  + Fix compat with newer glib by avoid volatile for enum types.
+  + Updated translations.
+- Switch build system to meson:
+  + Drop libtool BuildRequires: no longer needed.
+  + Add meson BuildRequires.
+  + Add gtk-doc BuildRequires: new dependency.
+  + Replace configure/make/make_install macros with
+    meson/meson_build/meson_install variants.
+
 -------------------------------------------------------------------
 Tue Dec  3 22:00:32 UTC 2019 - James Fehlig <jfehlig@suse.com>
 
diff --git a/libvirt-glib.spec b/libvirt-glib.spec
index ab418e7..9ca4602 100644
--- a/libvirt-glib.spec
+++ b/libvirt-glib.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package libvirt-glib
 #
-# Copyright (c) 2019 SUSE LLC.
+# Copyright (c) 2021 SUSE LLC
 # Copyright (c) 2011 Dominique Leuenberger, Amsterdam, The Netherlands.
 #
 # All modifications and additions to the file contributed by third parties
@@ -18,18 +18,19 @@
 
 
 Name:           libvirt-glib
-Version:        3.0.0
+Version:        4.0.0
 Release:        0
 Summary:        GLib and GObject mapping of libvirt
 License:        LGPL-2.1-or-later
 Group:          System/Libraries
 URL:            http://libvirt.org
-Source0:        http://libvirt.org/sources/glib/%{name}-%{version}.tar.gz
-Source1:        http://libvirt.org/sources/glib/%{name}-%{version}.tar.gz.asc
+Source0:        http://libvirt.org/sources/glib/%{name}-%{version}.tar.xz
+Source1:        http://libvirt.org/sources/glib/%{name}-%{version}.tar.xz.asc
 
 BuildRequires:  fdupes
 BuildRequires:  gettext
-BuildRequires:  libtool
+BuildRequires:  gtk-doc
+BuildRequires:  meson
 BuildRequires:  pkgconfig
 BuildRequires:  vala
 BuildRequires:  pkgconfig(glib-2.0) >= 2.38.0
@@ -127,14 +128,12 @@ should be able to integrate other virtualization mechanisms if needed
 %autosetup -p1
 
 %build
-%configure \
-	--disable-static \
-	%{nil}
-%make_build
+%meson \
+    -Dgit_werror=disabled
+%meson_build
 
 %install
-%make_install
-find %{buildroot} -type f -name "*.la" -delete -print
+%meson_install
 %find_lang %{name}
 %fdupes %{buildroot}/%{_datadir}/gtk-doc/
 
@@ -143,7 +142,7 @@ find %{buildroot} -type f -name "*.la" -delete -print
 
 %files -n libvirt-glib-1_0-0 -f %{name}.lang
 %license COPYING
-%doc README ChangeLog
+%doc README
 %{_libdir}/libvirt-gconfig-1.0.so.*
 %{_libdir}/libvirt-glib-1.0.so.*
 %{_libdir}/libvirt-gobject-1.0.so.*
@@ -175,9 +174,11 @@ find %{buildroot} -type f -name "*.la" -delete -print
 %{_datadir}/gtk-doc/html/Libvirt-gobject/
 %dir %{_datadir}/vala/
 %dir %{_datadir}/vala/vapi/
+%{_datadir}/vala/vapi/libvirt-gconfig-1.0.deps
 %{_datadir}/vala/vapi/libvirt-gconfig-1.0.vapi
+%{_datadir}/vala/vapi/libvirt-glib-1.0.deps
 %{_datadir}/vala/vapi/libvirt-glib-1.0.vapi
-%{_datadir}/vala/vapi/libvirt-gobject-1.0.vapi
 %{_datadir}/vala/vapi/libvirt-gobject-1.0.deps
+%{_datadir}/vala/vapi/libvirt-gobject-1.0.vapi
 
 %changelog