diff --git a/.gitignore b/.gitignore
index 586b592..dba4b8d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,3 +38,4 @@
 /yelp-tools-3.32.2.tar.xz
 /yelp-tools-3.37.90.tar.xz
 /yelp-tools-3.38.0.tar.xz
+/yelp-tools-40.beta.tar.xz
diff --git a/sources b/sources
index 2ba924a..2b20ef2 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (yelp-tools-3.38.0.tar.xz) = 2042e37f8efbe9974f5a507910393b837a0b9154beb918a5e8d145205fb519c8244bb405cf328ff5014287086be5b6d33ad631951bd0e950c2ad9efc60065d59
+SHA512 (yelp-tools-40.beta.tar.xz) = 9539ca88eb03c343596d398468331e814c948245a96f93cda7c7762d735ef0a8c95a067a89ab22dafc8d292b9c68e7123aa427fc4e8a8f61d13eafdfd2f0e5e9
diff --git a/yelp-tools.spec b/yelp-tools.spec
index 0b95294..b4220bc 100644
--- a/yelp-tools.spec
+++ b/yelp-tools.spec
@@ -1,15 +1,18 @@
+%global tarball_version %%(echo %{version} | tr '~' '.')
+
 Name:          yelp-tools
-Version:       3.38.0
-Release:       2%{?dist}
+Version:       40~beta
+Release:       1%{?dist}
 Summary:       Create, manage, and publish documentation for Yelp
 
 License:       GPLv2+
 URL:           https://wiki.gnome.org/Apps/Yelp/Tools
-Source0:       https://download.gnome.org/sources/%{name}/3.38/%{name}-%{version}.tar.xz
+Source0:       https://download.gnome.org/sources/%{name}/40/%{name}-%{tarball_version}.tar.xz
 BuildArch:     noarch
 
-BuildRequires: make
+BuildRequires: meson
 BuildRequires: pkgconfig(yelp-xsl)
+BuildRequires: python3-lxml
 BuildRequires: itstool
 BuildRequires: libxslt
 
@@ -26,14 +29,14 @@ lifting is done by packages like yelp-xsl and itstool. This package just
 wraps things up in a developer-friendly way.
 
 %prep
-%setup -q
+%autosetup -p1 -n %{name}-%{tarball_version}
 
 %build
-%configure
-make %{?_smp_mflags}
+%meson
+%meson_build
 
 %install
-%make_install
+%meson_install
 
 %files
 %doc AUTHORS README
@@ -45,6 +48,10 @@ make %{?_smp_mflags}
 %{_datadir}/aclocal/yelp.m4
 
 %changelog
+* Thu Feb 18 2021 Kalev Lember <klember@redhat.com> - 40~beta-1
+- Update to 40.beta
+- Switch to meson build system
+
 * Thu Jan 28 2021 Fedora Release Engineering <releng@fedoraproject.org> - 3.38.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild