diff --git a/desktop/xfce/base/xfconf/pspec.xml b/desktop/xfce/base/xfconf/pspec.xml
index 61952ba9ba..20ec63c448 100644
--- a/desktop/xfce/base/xfconf/pspec.xml
+++ b/desktop/xfce/base/xfconf/pspec.xml
@@ -18,6 +18,7 @@
         <BuildDependencies>
             <Dependency>python3</Dependency>
             <Dependency>intltool</Dependency>
+            <Dependency>gtk-doc</Dependency>
             <Dependency>vala-devel</Dependency>
             <Dependency>python-six</Dependency>
             <Dependency>glib2-devel</Dependency>