diff --git a/desktop/toolkit/gtk/gtk-doc/pspec.xml b/desktop/toolkit/gtk/gtk-doc/pspec.xml
index 889c8079ba..23025aa319 100644
--- a/desktop/toolkit/gtk/gtk-doc/pspec.xml
+++ b/desktop/toolkit/gtk/gtk-doc/pspec.xml
@@ -32,6 +32,7 @@
docbook-xml
sgml-common
+ python3
/usr/bin