diff --git a/taiga/projects/history/migrations/0006_fix_json_field_not_null.py b/taiga/projects/history/migrations/0006_fix_json_field_not_null.py
new file mode 100644
index 00000000..8c8ae187
--- /dev/null
+++ b/taiga/projects/history/migrations/0006_fix_json_field_not_null.py
@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django_pgjson.fields import JsonField
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('history', '0005_auto_20141120_1119'),
+    ]
+
+    operations = [
+        migrations.RunSQL(
+            sql='ALTER TABLE history_historyentry ALTER COLUMN "user" DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE history_historyentry ALTER COLUMN "diff" DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE history_historyentry ALTER COLUMN "snapshot" DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE history_historyentry ALTER COLUMN "values" DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE history_historyentry ALTER COLUMN "delete_comment_user" DROP NOT NULL;',
+        ),
+    ]
diff --git a/taiga/projects/migrations/0016_fix_json_field_not_null.py b/taiga/projects/migrations/0016_fix_json_field_not_null.py
new file mode 100644
index 00000000..aaa04543
--- /dev/null
+++ b/taiga/projects/migrations/0016_fix_json_field_not_null.py
@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django_pgjson.fields import JsonField
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('projects', '0015_auto_20141230_1212'),
+    ]
+
+    operations = [
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projectmodulesconfig ALTER COLUMN config DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN default_options DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN us_statuses DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN points DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN task_statuses DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN issue_statuses DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN issue_types DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN priorities DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN severities DROP NOT NULL;',
+        ),
+        migrations.RunSQL(
+            sql='ALTER TABLE projects_projecttemplate ALTER COLUMN roles DROP NOT NULL;',
+        ),
+    ]
diff --git a/taiga/userstorage/migrations/0002_fix_json_field_not_null.py b/taiga/userstorage/migrations/0002_fix_json_field_not_null.py
new file mode 100644
index 00000000..f993919a
--- /dev/null
+++ b/taiga/userstorage/migrations/0002_fix_json_field_not_null.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django_pgjson.fields import JsonField
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('userstorage', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RunSQL(
+            sql='ALTER TABLE userstorage_storageentry ALTER COLUMN value DROP NOT NULL;',
+        ),
+    ]