diff --git a/beat/web/toolchains/migrations/0001_initial.py b/beat/web/toolchains/migrations/0001_initial.py
index d69ded34631b7bf4a53cefd2f27c5f099f9f6fa0..7b9b053ca6b3c9613332dd1bc8e7fa9726b75a6e 100644
--- a/beat/web/toolchains/migrations/0001_initial.py
+++ b/beat/web/toolchains/migrations/0001_initial.py
@@ -27,46 +27,163 @@
 
 from __future__ import unicode_literals
 
-from django.db import migrations, models
 from django.conf import settings
-import beat.web.toolchains.models
+from django.db import migrations
+from django.db import models
+
 import beat.web.common.models
+import beat.web.toolchains.models
 
 
 class Migration(migrations.Migration):
 
     dependencies = [
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
-        ('team', '0001_initial'),
+        ("team", "0001_initial"),
     ]
 
     operations = [
         migrations.CreateModel(
-            name='Toolchain',
+            name="Toolchain",
             fields=[
-                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
-                ('sharing', models.CharField(default='P', max_length=1, choices=[('P', 'Private'), ('S', 'Shared'), ('A', 'Public'), ('U', 'Usable')])),
-                ('name', models.CharField(help_text='The name for this object (space-like characters will be automatically replaced by dashes)', max_length=200)),
-                ('version', models.PositiveIntegerField(default=1, help_text='The version of this object (an integer starting from 1)')),
-                ('short_description', models.CharField(default='', help_text='Describe the object succinctly (try to keep it under 80 characters)', max_length=100, blank=True)),
-                ('creation_date', models.DateTimeField(auto_now_add=True, verbose_name='Creation date')),
-                ('hash', models.CharField(help_text='Hashed value of the object contents (<a href="https://docs.python.org/2/library/hashlib.html">SHA256, hexadecimal digest</a>). This field is auto-generated and managed by the platform.', max_length=64, editable=False)),
-                ('declaration_file', models.FileField(db_column='declaration', upload_to=beat.web.common.models.get_contribution_declaration_filename, storage=beat.web.toolchains.models.ToolchainStorage(), max_length=200, blank=True, null=True)),
-                ('description_file', models.FileField(db_column='description', upload_to=beat.web.common.models.get_contribution_description_filename, storage=beat.web.toolchains.models.ToolchainStorage(), max_length=200, blank=True, null=True)),
-                ('errors', models.TextField(help_text='Errors detected while validating the toolchain. Automatically set by the platform.', null=True, blank=True)),
-                ('author', models.ForeignKey(related_name='toolchains', to=settings.AUTH_USER_MODEL, on_delete=models.CASCADE)),
-                ('fork_of', models.ForeignKey(related_name='forks', blank=True, to='toolchains.Toolchain', null=True, on_delete=models.SET_NULL)),
-                ('previous_version', models.ForeignKey(related_name='next_versions', blank=True, to='toolchains.Toolchain', null=True, on_delete=models.SET_NULL)),
-                ('shared_with', models.ManyToManyField(related_name='shared_toolchains', to=settings.AUTH_USER_MODEL, blank=True)),
-                ('shared_with_team', models.ManyToManyField(related_name='shared_toolchains', to='team.Team', blank=True)),
+                (
+                    "id",
+                    models.AutoField(
+                        verbose_name="ID",
+                        serialize=False,
+                        auto_created=True,
+                        primary_key=True,
+                    ),
+                ),
+                (
+                    "sharing",
+                    models.CharField(
+                        default="P",
+                        max_length=1,
+                        choices=[
+                            ("P", "Private"),
+                            ("S", "Shared"),
+                            ("A", "Public"),
+                            ("U", "Usable"),
+                        ],
+                    ),
+                ),
+                (
+                    "name",
+                    models.CharField(
+                        help_text="The name for this object (space-like characters will be automatically replaced by dashes)",
+                        max_length=200,
+                    ),
+                ),
+                (
+                    "version",
+                    models.PositiveIntegerField(
+                        default=1,
+                        help_text="The version of this object (an integer starting from 1)",
+                    ),
+                ),
+                (
+                    "short_description",
+                    models.CharField(
+                        default="",
+                        help_text="Describe the object succinctly (try to keep it under 80 characters)",
+                        max_length=100,
+                        blank=True,
+                    ),
+                ),
+                (
+                    "creation_date",
+                    models.DateTimeField(
+                        auto_now_add=True, verbose_name="Creation date"
+                    ),
+                ),
+                (
+                    "hash",
+                    models.CharField(
+                        help_text='Hashed value of the object contents (<a href="https://docs.python.org/2/library/hashlib.html">SHA256, hexadecimal digest</a>). This field is auto-generated and managed by the platform.',
+                        max_length=64,
+                        editable=False,
+                    ),
+                ),
+                (
+                    "declaration_file",
+                    models.FileField(
+                        db_column="declaration",
+                        upload_to=beat.web.common.models.get_contribution_declaration_filename,
+                        storage=beat.web.toolchains.models.ToolchainStorage(),
+                        max_length=200,
+                        blank=True,
+                        null=True,
+                    ),
+                ),
+                (
+                    "description_file",
+                    models.FileField(
+                        db_column="description",
+                        upload_to=beat.web.common.models.get_contribution_description_filename,
+                        storage=beat.web.toolchains.models.ToolchainStorage(),
+                        max_length=200,
+                        blank=True,
+                        null=True,
+                    ),
+                ),
+                (
+                    "errors",
+                    models.TextField(
+                        help_text="Errors detected while validating the toolchain. Automatically set by the platform.",
+                        null=True,
+                        blank=True,
+                    ),
+                ),
+                (
+                    "author",
+                    models.ForeignKey(
+                        related_name="toolchains",
+                        to=settings.AUTH_USER_MODEL,
+                        on_delete=models.CASCADE,
+                    ),
+                ),
+                (
+                    "fork_of",
+                    models.ForeignKey(
+                        related_name="forks",
+                        blank=True,
+                        to="toolchains.Toolchain",
+                        null=True,
+                        on_delete=models.SET_NULL,
+                    ),
+                ),
+                (
+                    "previous_version",
+                    models.ForeignKey(
+                        related_name="next_versions",
+                        blank=True,
+                        to="toolchains.Toolchain",
+                        null=True,
+                        on_delete=models.SET_NULL,
+                    ),
+                ),
+                (
+                    "shared_with",
+                    models.ManyToManyField(
+                        related_name="shared_toolchains",
+                        to=settings.AUTH_USER_MODEL,
+                        blank=True,
+                    ),
+                ),
+                (
+                    "shared_with_team",
+                    models.ManyToManyField(
+                        related_name="shared_toolchains", to="team.Team", blank=True
+                    ),
+                ),
             ],
             options={
-                'ordering': ['author__username', 'name', 'version'],
-                'abstract': False,
+                "ordering": ["author__username", "name", "version"],
+                "abstract": False,
             },
         ),
         migrations.AlterUniqueTogether(
-            name='toolchain',
-            unique_together=set([('author', 'name', 'version')]),
+            name="toolchain", unique_together=set([("author", "name", "version")]),
         ),
     ]