--- a/cubicweb.spec	Tue Mar 07 14:27:09 2017 +0100
+++ b/cubicweb.spec	Wed Mar 22 17:14:18 2017 +0100
@@ -25,7 +25,7 @@
 Requires:       %{python}-logilab-common >= 1.2.2
 Requires:       %{python}-logilab-mtconverter >= 0.8.0
 Requires:       %{python}-rql >= 0.34.0
-Requires:       %{python}-yams >= 0.44.0
+Requires:       %{python}-yams >= 0.44.0, %{python}-yams < 0.45.0
 Requires:       %{python}-logilab-database >= 1.15.0
 Requires:       %{python}-passlib
 Requires:       %{python}-lxml

--- a/cubicweb/__pkginfo__.py	Tue Mar 07 14:27:09 2017 +0100
+++ b/cubicweb/__pkginfo__.py	Wed Mar 22 17:14:18 2017 +0100
@@ -48,7 +48,7 @@
     'logilab-common': '>= 1.2.2',
     'logilab-mtconverter': '>= 0.8.0',
     'rql': '>= 0.34.0',
-    'yams': '>= 0.44.0',
+    'yams': '>= 0.44.0, < 0.45.0',
     #gettext                    # for xgettext, msgcat, etc...
     # web dependencies
     'lxml': '',

--- a/debian/control	Tue Mar 07 14:27:09 2017 +0100
+++ b/debian/control	Wed Mar 22 17:14:18 2017 +0100
@@ -16,7 +16,7 @@
  python-markdown,
  python-tz,
  python-rql (>= 0.34.0),
- python-yams (>= 0.44.0),
+ python-yams (<< 0.45.0),
  python-lxml,
 Standards-Version: 3.9.1
 Homepage: https://www.cubicweb.org
@@ -160,7 +160,7 @@
  python-logilab-mtconverter (>= 0.8.0),
  python-logilab-common (>= 1.2.0),
  python-markdown,
- python-yams (>= 0.44.0),
+ python-yams (<< 0.45.0),
  python-rql (>= 0.34.0),
  python-lxml
 Recommends: