diff --git a/desktop/xfce/base/xfce4-session/pspec.xml b/desktop/xfce/base/xfce4-session/pspec.xml
index cc34fc6193..852444eda8 100644
--- a/desktop/xfce/base/xfce4-session/pspec.xml
+++ b/desktop/xfce/base/xfce4-session/pspec.xml
@@ -18,6 +18,7 @@
             <Dependency>intltool</Dependency>
             <Dependency>atk-devel</Dependency>
             <Dependency>xfce4-dev-tools</Dependency>
+            <Dependency>gtk-doc</Dependency>
             <Dependency>gtk3-devel</Dependency>
             <Dependency>dbus-devel</Dependency>
             <Dependency>glib2-devel</Dependency>