diff --git a/superset/migrations/versions/0a9ffc0777c9_add_json_column_to_annotation_model_py.py b/superset/migrations/versions/0a9ffc0777c9_add_json_column_to_annotation_model_py.py
new file mode 100644
index 0000000000000..35d8336d0b3c2
--- /dev/null
+++ b/superset/migrations/versions/0a9ffc0777c9_add_json_column_to_annotation_model_py.py
@@ -0,0 +1,18 @@
+"""add_json_column_to_annotation_model.py
+
+Revision ID: 0a9ffc0777c9
+Revises: 1a1d627ebd8e
+Create Date: 2018-08-27 14:02:00.101734
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '0a9ffc0777c9'
+down_revision = '1a1d627ebd8e'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    op.add_column('annotation', sa.Column('annotation_metadata', sa.JSON(), nullable=True))