diff --git a/bijoe/schemas.py b/bijoe/schemas.py
index 1b4afda..c63e3b2 100644
--- a/bijoe/schemas.py
+++ b/bijoe/schemas.py
@@ -415,7 +415,7 @@ class Cube(Base):
 
 
 class Warehouse(Base):
-    __slots__ = ['name', 'slug', 'label', 'pg_dsn', 'search_path', 'cubes', 'path']
+    __slots__ = ['name', 'slug', 'label', 'pg_dsn', 'search_path', 'cubes', 'path', 'timestamp']
     __types__ = {
         'name': str,
         'slug': str,
@@ -429,6 +429,7 @@ class Warehouse(Base):
     def __init__(self, **kwargs):
         self.path = None
         self.slug = None
+        self.timestamp = None
         super(Warehouse, self).__init__(**kwargs)
 
     def check(self):
diff --git a/bijoe/templates/bijoe/cube.html b/bijoe/templates/bijoe/cube.html
index b0b7845..1d0bf28 100644
--- a/bijoe/templates/bijoe/cube.html
+++ b/bijoe/templates/bijoe/cube.html
@@ -71,6 +71,7 @@
       <a rel="popup" href="{% url "create-visualization" warehouse=warehouse.name cube=cube.name %}?{% firstof view.request.POST.urlencode view.request.GET.urlencode %}"
          title="{{ visualization.title }}" class="button">{% trans "Save" %}</a>
     {% endblock %}
+    <p>{% trans "Last update" %} {{ warehouse.timestamp }}</p>
   {% else %}
     <div class="big-msg-info">{% trans "Please choose some measures and groupings." %}</div>
   {% endif %}
diff --git a/bijoe/templates/bijoe/homepage.html b/bijoe/templates/bijoe/homepage.html
index 2fe0b01..5463cb4 100644
--- a/bijoe/templates/bijoe/homepage.html
+++ b/bijoe/templates/bijoe/homepage.html
@@ -28,7 +28,9 @@
     <ul class="objects-list single-links bijoe-warehouses">
       {% for warehouse in warehouses %}
          {% url 'warehouse' warehouse=warehouse.name as warehouse_url %}
-         <li><a href="{{ warehouse_url }}">{{ warehouse.label }}</a></li>
+         <li>
+                 <a href="{{ warehouse_url }}">{{ warehouse.label }} ({% trans "last update" %} {{ warehouse.timestamp}})</a>
+         </li>
       {% endfor %}
     </ul>
   {% endif %}
diff --git a/bijoe/templates/bijoe/warehouse.html b/bijoe/templates/bijoe/warehouse.html
index 6625292..7e4f34f 100644
--- a/bijoe/templates/bijoe/warehouse.html
+++ b/bijoe/templates/bijoe/warehouse.html
@@ -12,6 +12,7 @@
 {% endblock %}
 
 {% block content %}
+  <p>{% trans "Last update " %} {{ warehouse.timestamp }}</p>
   <table class="bijoe-table bijoe-form-table main">
     <thead>
       <tr>
diff --git a/bijoe/utils.py b/bijoe/utils.py
index dcc3543..2680f5c 100644
--- a/bijoe/utils.py
+++ b/bijoe/utils.py
@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import datetime
 import os
 import glob
 import json
@@ -21,6 +22,8 @@ import json
 from django.conf import settings
 from django.db import connection, transaction
 from django.utils.translation import ugettext as _
+from django.utils.timezone import utc
+
 try:
     from functools import lru_cache
 except ImportError:
@@ -41,8 +44,10 @@ def get_warehouses_paths():
 
 @lru_cache()
 def get_warehouse_by_path_and_mtime(path, mtime):
-    warehouse = json.load(open(path))
+    with open(path) as fd:
+        warehouse = json.load(fd)
     warehouse['path'] = path
+    warehouse['timestamp'] = mtime
     return Warehouse.from_json(warehouse)