diff --git a/octavia/db/migration/alembic_migrations/versions/392fb85b4419_add_primary_key_to_spares_pool.py b/octavia/db/migration/alembic_migrations/versions/392fb85b4419_add_primary_key_to_spares_pool.py
new file mode 100644
index 0000000000..cdfb2f115c
--- /dev/null
+++ b/octavia/db/migration/alembic_migrations/versions/392fb85b4419_add_primary_key_to_spares_pool.py
@@ -0,0 +1,47 @@
+#    Copyright 2016 Rackspace
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""add primary key to spares_pool
+
+Revision ID: 392fb85b4419
+Revises: 46d914b2a5e5
+Create Date: 2019-04-30 09:58:54.159823
+
+"""
+
+from alembic import op
+from sqlalchemy.engine import reflection
+
+from oslo_log import log as logging
+
+
+# revision identifiers, used by Alembic.
+revision = '392fb85b4419'
+down_revision = '46d914b2a5e5'
+
+LOG = logging.getLogger(__name__)
+
+
+def upgrade():
+    bind = op.get_bind()
+    inspector = reflection.Inspector.from_engine(bind.engine)
+    pk = inspector.get_pk_constraint('spares_pool')
+    if not pk['constrained_columns']:
+        op.create_primary_key(
+            u'pk_spares_pool', u'spares_pool', [u'updated_at'])
+    else:
+        # Revision '46d914b2a5e5' has been updated to create the
+        # missing PK. Depending whether the env is already deployed or
+        # not we may or not have to add the primary key.
+        LOG.info("The primary key in spares_pool already exists, continuing.")
diff --git a/octavia/db/migration/alembic_migrations/versions/6ffc710674ef_spares_pool_table.py b/octavia/db/migration/alembic_migrations/versions/6ffc710674ef_spares_pool_table.py
index ff42e65497..07a091228c 100644
--- a/octavia/db/migration/alembic_migrations/versions/6ffc710674ef_spares_pool_table.py
+++ b/octavia/db/migration/alembic_migrations/versions/6ffc710674ef_spares_pool_table.py
@@ -31,5 +31,5 @@ down_revision = '7432f1d4ea83'
 def upgrade():
     op.create_table(
         u'spares_pool',
-        sa.Column(u'updated_at', sa.DateTime(), nullable=True,
+        sa.Column(u'updated_at', sa.DateTime(), primary_key=True,
                   server_default=sa.func.current_timestamp()))