diff --git a/stages/migrations/0002_corpcontact_ext_id.py b/stages/migrations/0002_corpcontact_ext_id.py
new file mode 100644
index 0000000..719af0d
--- /dev/null
+++ b/stages/migrations/0002_corpcontact_ext_id.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('stages', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='corpcontact',
+            name='ext_id',
+            field=models.IntegerField(verbose_name='ID externe', blank=True, null=True),
+        ),
+    ]
diff --git a/stages/models.py b/stages/models.py
index 9a64286..6fdd82c 100644
--- a/stages/models.py
+++ b/stages/models.py
@@ -133,6 +133,7 @@ class Corporation(models.Model):
 
 class CorpContact(models.Model):
     corporation = models.ForeignKey(Corporation, verbose_name='Institution')
+    ext_id = models.IntegerField(null=True, blank=True, verbose_name='ID externe')
     is_main = models.BooleanField(default=False, verbose_name='Contact principal')
     always_cc = models.BooleanField(default=False, verbose_name='Toujours en copie')
     title = models.CharField(max_length=40, blank=True, verbose_name='Civilité')