diff --git a/dkist/io/level_1_dataset_schema.yaml b/dkist/io/level_1_dataset_schema.yaml
index 63a0a584..abf1438d 100644
--- a/dkist/io/level_1_dataset_schema.yaml
+++ b/dkist/io/level_1_dataset_schema.yaml
@@ -20,6 +20,7 @@ properties:
       - $ref: "asdf://dkist.nso.edu/schemas/tiled_dataset-0.1.0"
       - $ref: "asdf://dkist.nso.edu/schemas/tiled_dataset-1.0.0"
       - $ref: "asdf://dkist.nso.edu/schemas/tiled_dataset-1.1.0"
+      - $ref: "asdf://dkist.nso.edu/schemas/tiled_dataset-1.2.0"
 
 required: [dataset]
 additionalProperties: true