diff --git a/migrations/versions/0364_drop_old_column.py b/migrations/versions/0364_drop_old_column.py
new file mode 100644
index 000000000..40b730b9c
--- /dev/null
+++ b/migrations/versions/0364_drop_old_column.py
@@ -0,0 +1,33 @@
+"""
+
+Revision ID: 0364_drop_old_column
+Revises: 0363_cancelled_by_api_key
+Create Date: 2022-01-25 18:05:27.750234
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+revision = '0364_drop_old_column'
+down_revision = '0363_cancelled_by_api_key'
+
+
+def upgrade():
+    # move data over
+    op.execute("UPDATE broadcast_message SET created_by_api_key_id=api_key_id WHERE created_by_api_key_id IS NULL")
+    op.create_check_constraint(
+        "ck_broadcast_message_created_by_not_null",
+        "broadcast_message",
+        "created_by_id is not null or created_by_api_key_id is not null"
+    )
+    op.drop_column('broadcast_message', 'api_key_id')
+
+
+def downgrade():
+    op.add_column('broadcast_message', sa.Column('api_key_id', postgresql.UUID(), autoincrement=False, nullable=True))
+    op.execute("UPDATE broadcast_message SET api_key_id=created_by_api_key_id")  # move data over
+    op.drop_constraint(
+        "ck_broadcast_message_created_by_not_null",
+        "broadcast_message"
+    )