diff --git a/oarepo_model_builder/validation/model_validation.py b/oarepo_model_builder/validation/model_validation.py
index f54d81b..3bd7646 100644
--- a/oarepo_model_builder/validation/model_validation.py
+++ b/oarepo_model_builder/validation/model_validation.py
@@ -38,8 +38,16 @@ class Meta:
 
 
 class MarshmallowSettingsSchema(ma.Schema):
-    schema_base_class = ma.fields.String()
-    ui_schema_base_class = ma.fields.String()
+    schema_base_class = ma.fields.String(
+        attribute="schema-base-class",
+        data_key="schema-base-class",
+        default="oarepo_runtime.services.schema.marshmallow.DictOnlySchema",
+    )
+    ui_schema_base_class = ma.fields.String(
+        attribute="ui-schema-base-class",
+        data_key="ui-schema-base-class",
+        default="oarepo_runtime.services.schema.marshmallow.DictOnlySchema",
+    )
 
 
 class SettingsSchema(ma.Schema):
diff --git a/setup.cfg b/setup.cfg
index a1075c6..48c1bf1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = oarepo-model-builder
-version = 4.0.75
+version = 4.0.76
 description = A utility library that generates OARepo required data model files from a JSON specification file
 authors = Miroslav Bauer <bauer@cesnet.cz>, Miroslav Simek <simeki@vscht.cz>
 readme = README.md