diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1af659426..80ce17725 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -50,6 +50,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix verbosity in component info
 - Change default encoding to sqlvector
 - Fix some links in documentation 
+- Change `__dataclass_params__` to `_dataclass_params`
 
 ## [0.3.0](https://github.com/superduper-io/superduper/compare/0.3.0...0.2.0])    (2024-Jun-21)
 
diff --git a/plugins/ibis/superduper_ibis/query.py b/plugins/ibis/superduper_ibis/query.py
index f4b908f77..0214cf26f 100644
--- a/plugins/ibis/superduper_ibis/query.py
+++ b/plugins/ibis/superduper_ibis/query.py
@@ -105,7 +105,7 @@ class IbisQuery(Query):
     }
 
     # Use to control the behavior in the class construction method within LeafMeta
-    __dataclass_params__: t.ClassVar[t.Dict[str, t.Any]] = {
+    _dataclass_params: t.ClassVar[t.Dict[str, t.Any]] = {
         "eq": False,
         "order": False,
     }
diff --git a/plugins/mongodb/superduper_mongodb/query.py b/plugins/mongodb/superduper_mongodb/query.py
index cf4773ec9..80f9eab8d 100644
--- a/plugins/mongodb/superduper_mongodb/query.py
+++ b/plugins/mongodb/superduper_mongodb/query.py
@@ -118,7 +118,7 @@ class MongoQuery(Query):
     }
 
     # Use to control the behavior in the class construction method within LeafMeta
-    __dataclass_params__: t.ClassVar[t.Dict[str, t.Any]] = {
+    _dataclass_params: t.ClassVar[t.Dict[str, t.Any]] = {
         'eq': False,
         'order': False,
     }
diff --git a/superduper/base/leaf.py b/superduper/base/leaf.py
index 2c1f751ce..ec74ec725 100644
--- a/superduper/base/leaf.py
+++ b/superduper/base/leaf.py
@@ -85,7 +85,7 @@ def __new__(mcs, name, bases, namespace):
         # Determine if any bases are dataclasses and
         # apply the appropriate dataclass decorator
         #
-        dataclass_params = namespace.get('__dataclass_params__', {})
+        dataclass_params = namespace.get('_dataclass_params', {}).copy()
         if bases and any(dc.is_dataclass(b) for b in bases):
             dataclass_params['kw_only'] = True
             dataclass_params['repr'] = not name.endswith('Query')