diff --git a/zenity.spec b/zenity.spec
index 23ad0bd..41f02f8 100644
--- a/zenity.spec
+++ b/zenity.spec
@@ -13,6 +13,7 @@ BuildRequires: libnotify-devel >= 0.4.1
 BuildRequires: which
 BuildRequires: gettext
 BuildRequires: intltool
+BuildRequires: itstool
 
 %description
 Zenity lets you display Gtk+ dialog boxes from the command line and through