diff --git a/x11/library/libXcomposite/pspec.xml b/x11/library/libXcomposite/pspec.xml
index 50329c3963..219932d9cf 100644
--- a/x11/library/libXcomposite/pspec.xml
+++ b/x11/library/libXcomposite/pspec.xml
@@ -14,6 +14,7 @@
         <Description>libXcomposite is the X Composite library. Compositing allows modification of the window system's base elements like window borders, window buttons and window titlebars.</Description>
         <Archive sha1sum="902631efb55a798c81086e5ff90b60349839db40" type="tarbz2">mirrors://xorg/individual/lib/libXcomposite-0.4.5.tar.bz2</Archive>
         <BuildDependencies>
+            <Dependency>xmlto</Dependency>
             <Dependency>libX11-devel</Dependency>
             <Dependency>libXfixes-devel</Dependency>
             <Dependency>util-macros</Dependency>