diff --git a/CHANGELOG b/CHANGELOG
index 792b61d..753ff68 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,2 +1,5 @@
+Version 3.4.1 - 2015-01-20
+* Add lot_number char field in reception lines
+
 Version 3.4.0 - 2015-01-19
 * Initial release
diff --git a/locale/ca_ES.po b/locale/ca_ES.po
index 856ba7a..e990ba1 100644
--- a/locale/ca_ES.po
+++ b/locale/ca_ES.po
@@ -5,3 +5,7 @@ msgstr "Content-Type: text/plain; charset=utf-8\n"
 msgctxt "field:stock.external.reception.line,lot:"
 msgid "Lot"
 msgstr "Lot"
+
+msgctxt "field:stock.external.reception.line,lot_number:"
+msgid "Lot Number"
+msgstr "Número lot"
diff --git a/locale/es_ES.po b/locale/es_ES.po
index 7416ceb..0e4a768 100644
--- a/locale/es_ES.po
+++ b/locale/es_ES.po
@@ -2,7 +2,10 @@
 msgid ""
 msgstr "Content-Type: text/plain; charset=utf-8\n"
 
-#, fuzzy
 msgctxt "field:stock.external.reception.line,lot:"
 msgid "Lot"
 msgstr "Lote"
+
+msgctxt "field:stock.external.reception.line,lot_number:"
+msgid "Lot Number"
+msgstr "Número lote"
diff --git a/stock.py b/stock.py
index 326d1ed..38d89b6 100644
--- a/stock.py
+++ b/stock.py
@@ -10,6 +10,7 @@ __metaclass__ = PoolMeta
 
 class ExternalReceptionLine:
     __name__ = 'stock.external.reception.line'
+    lot_number = fields.Char('Lot Number')
     lot = fields.Many2One('stock.lot', 'Lot', domain=[
             ('product', '=', Eval('product')),
             ], depends=['product'])
diff --git a/tryton.cfg b/tryton.cfg
index 30cae2e..e1bc7d2 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -1,5 +1,5 @@
 [tryton]
-version=3.4.0
+version=3.4.1
 depends:
     stock_external_reception
     stock_lot
diff --git a/view/external_reception_line_form.xml b/view/external_reception_line_form.xml
index c2b9cef..415c994 100644
--- a/view/external_reception_line_form.xml
+++ b/view/external_reception_line_form.xml
@@ -2,6 +2,11 @@
 <!-- The COPYRIGHT file at the top level of this repository contains the full
      copyright notices and license terms. -->
 <data>
+    <xpath expr="/form/field[@name='description']" position="after">
+        <label name="lot_number"/>
+        <field name="lot_number"/>
+        <newline/>
+    </xpath>
     <xpath expr="/form/field[@name='product']" position="after">
         <label name="lot"/>
         <field name="lot"/>
diff --git a/view/external_reception_line_list.xml b/view/external_reception_line_list.xml
index 3ca802e..b49a7bf 100644
--- a/view/external_reception_line_list.xml
+++ b/view/external_reception_line_list.xml
@@ -2,6 +2,9 @@
 <!-- The COPYRIGHT file at the top level of this repository contains the full
      copyright notices and license terms. -->
 <data>
+    <xpath expr="/tree/field[@name='description']" position="after">
+        <field name="lot_number"/>
+    </xpath>
     <xpath expr="/tree/field[@name='product']" position="after">
         <field name="lot"/>
     </xpath>
diff --git a/view/external_reception_line_list_sequence.xml b/view/external_reception_line_list_sequence.xml
index 3ca802e..b49a7bf 100644
--- a/view/external_reception_line_list_sequence.xml
+++ b/view/external_reception_line_list_sequence.xml
@@ -2,6 +2,9 @@
 <!-- The COPYRIGHT file at the top level of this repository contains the full
      copyright notices and license terms. -->
 <data>
+    <xpath expr="/tree/field[@name='description']" position="after">
+        <field name="lot_number"/>
+    </xpath>
     <xpath expr="/tree/field[@name='product']" position="after">
         <field name="lot"/>
     </xpath>