diff --git a/srcpkgs/xulrunner/INSTALL b/srcpkgs/xulrunner/INSTALL
new file mode 100644
index 0000000000..d9ecaa1cf0
--- /dev/null
+++ b/srcpkgs/xulrunner/INSTALL
@@ -0,0 +1,6 @@
+case "${ACTION}" in
+post)
+	echo -n "Updating dynamic linker shared cache... "
+	ldconfig && echo "ok." || echo "FAILED!"
+	;;
+esac