diff --git a/docs/reference/meson.build b/docs/reference/meson.build
index 43c7245..1662786 100644
--- a/docs/reference/meson.build
+++ b/docs/reference/meson.build
@@ -9,7 +9,7 @@ configure_file(
 
 gnome.gtkdoc(
     'cmenu',
-    src_dir: join_paths(meson.source_root(), 'libmenu'),
+    src_dir: join_paths(meson.project_source_root(), 'libmenu'),
     main_xml: 'cmenu-docs.xml',
     scan_args: ['--rebuild-types'],
     ignore_headers: libmenu_private_headers,
diff --git a/meson.build b/meson.build
index f79d0e3..877f701 100644
--- a/meson.build
+++ b/meson.build
@@ -1,4 +1,4 @@
-project('cinnamon-menus', 'c', version : '5.8.0', meson_version: '>=0.40.0')
+project('cinnamon-menus', 'c', version : '5.8.0', meson_version: '>=0.56.0')
 
 gnome = import('gnome')