diff --git a/data/database.py b/data/database.py
index 0e724c6b0..9726adf5b 100644
--- a/data/database.py
+++ b/data/database.py
@@ -1173,5 +1173,12 @@ class BitTorrentPieces(BaseModel):
     )
 
 
-is_model = lambda x: inspect.isclass(x) and issubclass(x, BaseModel) and x is not BaseModel
+beta_classes = set([ManifestLayerScan, Tag, BlobPlacementLocation, ManifestLayer, ManifestList,
+                    BitTorrentPieces, MediaType, Label, ManifestBlob, BlobUploading, Blob,
+                    ManifestLayerDockerV1, BlobPlacementLocationPreference, ManifestListManifest,
+                    Manifest, DerivedImage, BlobPlacement])
+is_model = lambda x: (inspect.isclass(x) and
+                      issubclass(x, BaseModel) and
+                      x is not BaseModel and
+                      x not in beta_classes)
 all_models = [model[1] for model in inspect.getmembers(sys.modules[__name__], is_model)]