diff --git a/x11/library/libX11/pspec.xml b/x11/library/libX11/pspec.xml
index ec24f0a0b5..77093918d3 100644
--- a/x11/library/libX11/pspec.xml
+++ b/x11/library/libX11/pspec.xml
@@ -17,7 +17,9 @@
libxcb-devel
xorg-proto
util-macros
+ libxslt-devel
xtrans
+ xmlto