diff --git a/AUTHORS.rst b/AUTHORS.rst
index f539e9d..fa07642 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -11,4 +11,5 @@ Contributors
 - Simone Orsi (Camptocamp)
 - Iván Todorovitch (Camptocamp)
 - Yannick Vaucher (Camptocamp)
-- Alexandre Fayolle (Camptocamp)
\ No newline at end of file
+- Alexandre Fayolle (Camptocamp)
+- Stéphane Mangin (Camptocamp)
diff --git a/marabunta/config.py b/marabunta/config.py
index aa890d6..99dfb41 100644
--- a/marabunta/config.py
+++ b/marabunta/config.py
@@ -7,7 +7,6 @@
 
 
 class Config(object):
-
     def __init__(self,
                  migration_file,
                  database,
@@ -18,6 +17,7 @@ def __init__(self,
                  mode=None,
                  allow_serie=False,
                  force_version=None,
+                 override_translations=False,
                  web_host='localhost',
                  web_port=8069,
                  web_resp_status=503,
@@ -35,6 +35,7 @@ def __init__(self,
         self.force_version = force_version
         if force_version and not allow_serie:
             self.allow_serie = True
+        self.override_translations = override_translations
         self.web_host = web_host
         self.web_port = web_port
         self.web_resp_status = web_resp_status
@@ -60,6 +61,7 @@ def from_parse_args(cls, args):
                    mode=args.mode,
                    allow_serie=args.allow_serie,
                    force_version=args.force_version,
+                   override_translations=args.override_translations,
                    web_host=args.web_host,
                    web_port=args.web_port,
                    web_resp_status=args.web_resp_status,
@@ -148,6 +150,10 @@ def get_args_parser():
                         default=os.environ.get('MARABUNTA_FORCE_VERSION'),
                         help='Force upgrade of a version, even if it has '
                              'already been applied.')
+    parser.add_argument("--override-translations",
+                        required=False,
+                        default=os.environ.get("MARABUNTA_OVERRIDE_TRANSLATIONS"),
+                        help="Force override of translations.")
 
     group = parser.add_argument_group(
         title='Web',
diff --git a/marabunta/model.py b/marabunta/model.py
index 391904a..705e14c 100644
--- a/marabunta/model.py
+++ b/marabunta/model.py
@@ -119,6 +119,7 @@ def __init__(self, number, options):
         self._version_modes = {}
         self.options = options
         self.backup = False
+        self.override_translations = False
 
     def is_processed(self, db_versions):
         """Check if version is already applied in the database.
@@ -210,7 +211,7 @@ def upgrade_addons_operation(self, addons_state, mode=None):
         to_install = addons_list - installed
         to_upgrade = installed & addons_list
 
-        return UpgradeAddonsOperation(self.options, to_install, to_upgrade)
+        return UpgradeAddonsOperation(self.options, to_install, to_upgrade, self.override_translations)
 
     def remove_addons_operation(self):
         raise NotImplementedError
@@ -252,10 +253,11 @@ def add_remove_addons(self, addons):
 
 class UpgradeAddonsOperation(object):
 
-    def __init__(self, options, to_install, to_upgrade):
+    def __init__(self, options, to_install, to_upgrade, override_translations=False):
         self.options = options
         self.to_install = set(to_install)
         self.to_upgrade = set(to_upgrade)
+        self.override_translations = override_translations
 
     def operation(self, exclude_addons=None):
         if exclude_addons is None:
@@ -263,6 +265,8 @@ def operation(self, exclude_addons=None):
         install_command = self.options.install_command
         install_args = self.options.install_args[:] or []
         install_args += [u'--workers=0', u'--stop-after-init', u'--no-xmlrpc']
+        if self.override_translations:
+            install_args += [u'--i18n-override']
 
         to_install = self.to_install - exclude_addons
         if to_install:
diff --git a/marabunta/parser.py b/marabunta/parser.py
index 0216ca9..23344f2 100644
--- a/marabunta/parser.py
+++ b/marabunta/parser.py
@@ -71,6 +71,7 @@
 
     - version: 0.0.4
       backup: false
+      override_translations: true
       addons:
         upgrade:
           - popeye
@@ -198,10 +199,27 @@ def _parse_backup(self, version, backup=True, mode=None):
             raise ParseError(u"'backup' key must be a boolean", YAML_EXAMPLE)
         version.backup = backup
 
+    def _parse_override_translations(
+        self, version, override_translations=False, mode=None
+    ):
+        if override_translations not in (True, False, None):
+            raise ParseError(
+                "'override_translations' key must be a boolean", YAML_EXAMPLE
+            )
+        version.override_translations = override_translations
+
     def _parse_version(self, parsed_version, options):
         self.check_dict_expected_keys(
-            {'version', 'operations', 'addons', 'modes', 'backup'},
-            parsed_version, 'versions',
+            {
+                "version",
+                "operations",
+                "addons",
+                "modes",
+                "backup",
+                "override_translations",
+            },
+            parsed_version,
+            "versions",
         )
         number = parsed_version.get('version')
         version = Version(number, options)
@@ -237,4 +255,9 @@ def _parse_version(self, parsed_version, options):
                 backup = True
         self._parse_backup(version, backup)
 
+        # If translations needs to be overriden
+        self._parse_override_translations(
+            version, parsed_version.get("override_translations")
+        )
+
         return version