--- a/debian/control	Wed Jun 01 15:17:09 2016 +0200
+++ b/debian/control	Tue Jun 21 13:45:12 2016 +0200
@@ -17,6 +17,7 @@
  python-tz,
  python-rql (>= 0.34.0),
  python-yams (>= 0.42.0),
+ python-yams (<< 0.43),
  python-lxml,
 Standards-Version: 3.9.1
 Homepage: https://www.cubicweb.org