diff --git a/dbt_common/dataclass_schema.py b/dbt_common/dataclass_schema.py
index 0aad4d5..1c5b515 100644
--- a/dbt_common/dataclass_schema.py
+++ b/dbt_common/dataclass_schema.py
@@ -15,11 +15,15 @@
 from mashumaro.jsonschema import build_json_schema
 
 # following includes DataClassDictMixin
-from mashumaro.mixins.msgpack import DataClassMessagePackMixin
+from mashumaro.mixins.msgpack import DataClassMessagePackMixin, MessagePackDialect
 
 import functools
 
 
+class FixedMessagePackDialect(MessagePackDialect):
+    no_copy_collections = ()
+
+
 class ValidationError(jsonschema.ValidationError):
     pass
 
@@ -49,6 +53,7 @@ class dbtMashConfig(MashBaseConfig):
     }
     serialize_by_alias = True
     lazy_compilation = True
+    dialect = FixedMessagePackDialect
 
 
 # This class pulls in DataClassDictMixin from Mashumaro. The 'to_dict'