diff --git a/gramps/plugins/docgen/cairodoc.py b/gramps/plugins/docgen/cairodoc.py
index dcd6e4772..4185d73a3 100644
--- a/gramps/plugins/docgen/cairodoc.py
+++ b/gramps/plugins/docgen/cairodoc.py
@@ -35,6 +35,9 @@ import logging
 # GTK modules
 #
 #-------------------------------------------------------------------------
+import gi
+gi.require_version('Pango', '1.0')
+gi.require_version('PangoCairo', '1.0')
 from gi.repository import Pango, PangoCairo
 import cairo