diff --git a/CHANGELOG b/CHANGELOG
index 8f7cc3b79c..de95cb0d63 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,4 @@
+* Add option install module dependencies with trytond-admin
 * Add localhost_name and timeout as get_smtp_server uri parameters
 * Delete missing modules not activated when updating module list
 * Remove empty pages from notebook
diff --git a/trytond/admin.py b/trytond/admin.py
index fcc88b5ea4..7b08eec021 100644
--- a/trytond/admin.py
+++ b/trytond/admin.py
@@ -50,7 +50,8 @@ def run(options):
             lang = set()
         lang |= set(options.languages)
         pool = Pool(db_name)
-        pool.init(update=options.update, lang=list(lang))
+        pool.init(update=options.update, lang=list(lang),
+            installdeps=options.installdeps)
 
         if options.update_modules_list:
             with Transaction().start(db_name, 0) as transaction:
diff --git a/trytond/commandline.py b/trytond/commandline.py
index f3f09d5037..ad070496d7 100644
--- a/trytond/commandline.py
+++ b/trytond/commandline.py
@@ -47,6 +47,9 @@ def get_parser_admin():
         metavar='MODULE', help="update a module")
     parser.add_argument("--all", dest="update", action="append_const",
         const="ir", help="update all installed modules")
+    parser.add_argument("--install-dependencies", dest="installdeps",
+        action="store_true",
+        help="Install missing dependencies of updated modules")
     parser.add_argument("-p", "--password", dest="password",
         action='store_true', help="set the admin password")
     parser.add_argument("-m", "--update-modules-list", action="store_true",
diff --git a/trytond/exceptions.py b/trytond/exceptions.py
index acb37657fb..68922344e8 100644
--- a/trytond/exceptions.py
+++ b/trytond/exceptions.py
@@ -60,3 +60,12 @@ class ConcurrencyException(TrytonException):
 
 class RateLimitException(TrytonException):
     """User has sent too many requests in a given amount of time."""
+
+
+class MissingDependenciesException(TrytonException):
+
+    def __init__(self, missings):
+        self.missings = missings
+
+    def __str__(self):
+        return 'Missing dependencies: %s' % ' '.join(self.missings)
diff --git a/trytond/modules/__init__.py b/trytond/modules/__init__.py
index b25506fcae..5f18be4748 100644
--- a/trytond/modules/__init__.py
+++ b/trytond/modules/__init__.py
@@ -16,6 +16,7 @@ from sql.functions import CurrentTimestamp
 
 import trytond.tools as tools
 from trytond.config import config
+from trytond.exceptions import MissingDependenciesException
 from trytond.transaction import Transaction
 from trytond import backend
 import trytond.convert as convert
@@ -187,7 +188,7 @@ def create_graph(module_list):
             continue
         missings |= set((x for x in deps if x not in graph))
     if missings:
-        raise Exception('Missing dependencies: %s' % list(missings
+        raise MissingDependenciesException(list(missings
                 - set((p[0] for p in packages))))
     return graph, packages, later
 
@@ -379,10 +380,15 @@ def register_classes():
         MODULES.append(module)
 
 
-def load_modules(database_name, pool, update=None, lang=None):
+def load_modules(
+        database_name, pool, update=None, lang=None, installdeps=False):
     res = True
+    if update:
+        update = update[:]
+    else:
+        update = []
 
-    def _load_modules():
+    def _load_modules(update):
         global res
         TableHandler = backend.get('TableHandler')
         transaction = Transaction()
@@ -414,9 +420,15 @@ def load_modules(database_name, pool, update=None, lang=None):
                         where=ir_module.state.in_(('activated', 'to upgrade',
                                 'to remove'))))
             module_list = [name for (name,) in cursor.fetchall()]
-            if update:
+            graph = None
+            while graph is None:
                 module_list += update
-            graph = create_graph(module_list)[0]
+                try:
+                    graph = create_graph(module_list)[0]
+                except MissingDependenciesException as e:
+                    if not installdeps:
+                        raise
+                    update += e.missings
 
             load_module_graph(graph, pool, update, lang)
 
@@ -448,11 +460,11 @@ def load_modules(database_name, pool, update=None, lang=None):
 
     if not Transaction().connection:
         with Transaction().start(database_name, 0):
-            _load_modules()
+            _load_modules(update)
     else:
         with Transaction().new_transaction(), \
                 Transaction().set_user(0), \
                 Transaction().reset_context():
-            _load_modules()
+            _load_modules(update)
 
     return res
diff --git a/trytond/pool.py b/trytond/pool.py
index 3b9a6eebf7..d110c770db 100644
--- a/trytond/pool.py
+++ b/trytond/pool.py
@@ -133,7 +133,7 @@ class Pool(object):
         '''
         return self._locks[self.database_name]
 
-    def init(self, update=None, lang=None):
+    def init(self, update=None, lang=None, installdeps=False):
         '''
         Init pool
         Set update to proceed to update
@@ -152,7 +152,7 @@ class Pool(object):
             for type in self.classes.keys():
                 self._pool[self.database_name][type] = {}
             restart = not load_modules(self.database_name, self, update=update,
-                    lang=lang)
+                    lang=lang, installdeps=installdeps)
             if restart:
                 self.init()