diff --git a/dkist/io/asdf/converters/tiled_dataset.py b/dkist/io/asdf/converters/tiled_dataset.py
index 4c3f4907..174f136b 100644
--- a/dkist/io/asdf/converters/tiled_dataset.py
+++ b/dkist/io/asdf/converters/tiled_dataset.py
@@ -8,6 +8,7 @@ class TiledDatasetConverter(Converter):
         "tag:dkist.nso.edu:dkist/tiled_dataset-0.1.0",
         "asdf://dkist.nso.edu/tags/tiled_dataset-1.0.0",
         "asdf://dkist.nso.edu/tags/tiled_dataset-1.1.0",
+        "asdf://dkist.nso.edu/tags/tiled_dataset-1.2.0",
     ]
     types = ["dkist.dataset.tiled_dataset.TiledDataset"]
 
diff --git a/dkist/io/asdf/resources/manifests/dkist-1.4.0.yaml b/dkist/io/asdf/resources/manifests/dkist-1.4.0.yaml
index b9aadf4b..cc34a374 100644
--- a/dkist/io/asdf/resources/manifests/dkist-1.4.0.yaml
+++ b/dkist/io/asdf/resources/manifests/dkist-1.4.0.yaml
@@ -8,7 +8,7 @@ description: ASDF schemas and tags for DKIST classes.
 tags:
   - schema_uri: "asdf://dkist.nso.edu/schemas/file_manager-1.0.0"
     tag_uri: "asdf://dkist.nso.edu/tags/file_manager-1.0.0"
-  - schema_uri: "asdf://dkist.nso.edu/schemas/dataset-1.2.0"
+  - schema_uri: "asdf://dkist.nso.edu/schemas/dataset-1.1.0"
     tag_uri: "asdf://dkist.nso.edu/tags/dataset-1.2.0"
   - schema_uri: "asdf://dkist.nso.edu/schemas/tiled_dataset-1.2.0"
     tag_uri: "asdf://dkist.nso.edu/tags/tiled_dataset-1.2.0"