diff -Naur xfconf-4.18.0-orig/debian/control xfconf-4.18.0/debian/control
--- xfconf-4.18.0-orig/debian/control	2022-12-10 10:48:30.000000000 +0300
+++ xfconf-4.18.0/debian/control	2023-03-09 22:03:23.946840250 +0300
@@ -9,6 +9,7 @@
                intltool,
                libgirepository1.0-dev,
                libxfce4util-dev (>= 4.17.3),
+               valac,
                xfce4-dev-tools (>= 4.16)
 Rules-Requires-Root: no
 Standards-Version: 4.6.1
diff -Naur xfconf-4.18.0-orig/debian/libxfconf-0-dev.install xfconf-4.18.0/debian/libxfconf-0-dev.install
--- xfconf-4.18.0-orig/debian/libxfconf-0-dev.install	2020-11-14 13:01:16.000000000 +0300
+++ xfconf-4.18.0/debian/libxfconf-0-dev.install	2023-03-09 22:03:46.239091868 +0300
@@ -3,3 +3,4 @@
 usr/lib/*/pkgconfig
 usr/share/gir-1.0/*
 usr/share/gtk-doc
+usr/share/vala/vapi/*
diff -Naur xfconf-4.18.0-orig/debian/rules xfconf-4.18.0/debian/rules
--- xfconf-4.18.0-orig/debian/rules	2023-02-27 08:54:14.000000000 +0300
+++ xfconf-4.18.0/debian/rules	2023-03-09 22:01:48.993793386 +0300
@@ -11,8 +11,7 @@
 		--disable-gsettings-backend \
 		--disable-perl-bindings \
 		--enable-gtk-doc \
-		--enable-introspection=yes \
-		--enable-vala=no
+		--enable-introspection=yes
 
 override_dh_auto_test: