diff --git a/CHANGELOG b/CHANGELOG
index 1066ae91c4..f2908a4b36 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* Remove egenix-mx-base and replace it by python-dateutil
+
 Version 1.4.0 - 2009-10-19
 * Bug fixes (see mercurial logs for details)
 
diff --git a/INSTALL b/INSTALL
index abd192dbeb..5b2915b175 100644
--- a/INSTALL
+++ b/INSTALL
@@ -5,7 +5,7 @@ Prerequisites
 -------------
 
  * Python 2.4 or later (http://www.python.org/)
- * egenix-mx-base (http://www.egenix.com/products/python/)
+ * python-dateutil (http://labix.org/python-dateutil)
  * trytond (http://www.tryton.org/)
  * trytond_product (http://www.tryton.org/)
  * trytond_stock (http://www.tryton.org/)
diff --git a/forecast.py b/forecast.py
index a0ef07d2e2..76cdc94cdb 100644
--- a/forecast.py
+++ b/forecast.py
@@ -3,7 +3,8 @@
 from trytond.model import ModelView, ModelWorkflow, ModelSQL, fields
 from trytond.wizard import Wizard
 import datetime
-import mx.DateTime
+import time
+from dateutil.relativedelta import relativedelta
 
 STATES = {
     'readonly': "state != 'draft'",
@@ -380,10 +381,7 @@ class ForecastComplete(Wizard):
 
         res = {}
         for field in ("to_date", "from_date"):
-            date = mx.DateTime.strptime(str(forecast[field]), '%Y-%m-%d')
-            new_date = date - mx.DateTime.RelativeDateTime(years=1)
-            res[field] = datetime.date(new_date.year, new_date.month,
-                    new_date.day)
+            res[field] = forecast[field] - relativedelta(years=1)
         return res
 
     def _get_product_quantity(self, cursor, user, data, context=None):
diff --git a/setup.py b/setup.py
index 88a74c83be..4f93ff3049 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@ import re
 
 info = eval(file('__tryton__.py').read())
 
-requires = ['egenix-mx-base']
+requires = ['python-dateutil']
 for dep in info.get('depends', []):
     if not re.match(r'(ir|res|workflow|webdav)(\W|$)', dep):
         requires.append('trytond_' + dep)