diff --git a/pyterrier_caching/__init__.py b/pyterrier_caching/__init__.py
index c88703d..f4a0cb5 100644
--- a/pyterrier_caching/__init__.py
+++ b/pyterrier_caching/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '0.5.5'
+__version__ = '0.5.6'
 
 from pyterrier_caching.util import Lazy, closing_memmap, meta_file_compat
 from pyterrier_caching.indexer_cache import IndexerCache, Lz4PickleIndexerCache
diff --git a/pyterrier_caching/retriever_cache.py b/pyterrier_caching/retriever_cache.py
index cd6141f..37b8c74 100644
--- a/pyterrier_caching/retriever_cache.py
+++ b/pyterrier_caching/retriever_cache.py
@@ -17,6 +17,7 @@ class DbmRetrieverCache(pt.Artifact, pt.Transformer):
     """A :class:`~pyterrier_caching.RetrieverCache` that stores retrieved results in ``dbm.dumb`` database files."""
     ARTIFACT_TYPE = 'retriever_cache'
     ARTIFACT_FORMAT = 'dbm.dumb'
+    ARTIFACT_SCHEMATIC_SHOW_AS_TRANSFORMER = True
 
     def __init__(self,
                  path: Optional[Union[str, Path]] = None,
diff --git a/pyterrier_caching/scorer_cache.py b/pyterrier_caching/scorer_cache.py
index bc5a6e8..efa059d 100644
--- a/pyterrier_caching/scorer_cache.py
+++ b/pyterrier_caching/scorer_cache.py
@@ -27,6 +27,7 @@ class Hdf5ScorerCache(pta.Artifact, pt.Transformer):
     """
     ARTIFACT_TYPE = 'scorer_cache'
     ARTIFACT_FORMAT = 'hdf5'
+    ARTIFACT_SCHEMATIC_SHOW_AS_TRANSFORMER = True
 
     def __init__(self,
         path: Optional[Union[str, Path]] = None,
@@ -277,6 +278,7 @@ class Sqlite3ScorerCache(pta.Artifact, pt.Transformer):
 
     ARTIFACT_TYPE = 'scorer_cache'
     ARTIFACT_FORMAT = 'sqlite3'
+    ARTIFACT_SCHEMATIC_SHOW_AS_TRANSFORMER = True
 
     def __init__(
         self,