diff --git a/app/models.py b/app/models.py
index 3e4fe7c4..65a3b8c4 100644
--- a/app/models.py
+++ b/app/models.py
@@ -236,6 +236,7 @@ class Fido(Base, ModelMixin):
     public_key = sa.Column(sa.String(), nullable=False, unique=True)
     sign_count = sa.Column(sa.BigInteger(), nullable=False)
     name = sa.Column(sa.String(128), nullable=False, unique=False)
+    user_id = sa.Column(sa.ForeignKey("users.id", ondelete="cascade"), nullable=True)
 
 
 class User(Base, ModelMixin, UserMixin, PasswordOracle):
diff --git a/migrations/versions/2021_112212_d0ccd9d7ac0c_.py b/migrations/versions/2021_112212_d0ccd9d7ac0c_.py
new file mode 100644
index 00000000..1c3e64e8
--- /dev/null
+++ b/migrations/versions/2021_112212_d0ccd9d7ac0c_.py
@@ -0,0 +1,31 @@
+"""empty message
+
+Revision ID: d0ccd9d7ac0c
+Revises: e7d7ebcea26c
+Create Date: 2021-11-22 12:05:31.814178
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'd0ccd9d7ac0c'
+down_revision = 'e7d7ebcea26c'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('fido', sa.Column('user_id', sa.Integer(), nullable=True))
+    op.create_foreign_key(None, 'fido', 'users', ['user_id'], ['id'], ondelete='cascade')
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'fido', type_='foreignkey')
+    op.drop_column('fido', 'user_id')
+    # ### end Alembic commands ###