diff --git a/migrations/versions/64081c5f2989_.py b/migrations/versions/64081c5f2989_.py
index 505458e3..9cbce67f 100644
--- a/migrations/versions/64081c5f2989_.py
+++ b/migrations/versions/64081c5f2989_.py
@@ -11,17 +11,20 @@
 
 # revision identifiers, used by Alembic.
 revision = '64081c5f2989'
-down_revision = 'a49047414055'
+down_revision = '6478d31e8708'
 branch_labels = None
 depends_on = None
 
 
 def upgrade():
     # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column('project', sa.Column('updated_at', sa.DateTime(), nullable=True))
-    op.add_column('project_tag', sa.Column('updated_at', sa.DateTime(), nullable=True))
+    op.add_column('project', sa.Column(
+        'updated_at', sa.DateTime(), nullable=True))
+    op.add_column('project_tag', sa.Column(
+        'updated_at', sa.DateTime(), nullable=True))
     op.add_column('tag', sa.Column('updated_at', sa.DateTime(), nullable=True))
-    op.add_column('tag_followers', sa.Column('updated_at', sa.DateTime(), nullable=True))
+    op.add_column('tag_followers', sa.Column(
+        'updated_at', sa.DateTime(), nullable=True))
     # ### end Alembic commands ###
 
 
@@ -31,5 +34,5 @@ def downgrade():
     op.drop_column('tag', 'updated_at')
     op.drop_column('project_tag', 'updated_at')
     op.drop_column('project', 'updated_at')
-    
+
     # ### end Alembic commands ###