diff --git a/pipelines/config.py b/pipelines/config.py
index 3bfd32c..dbb34c0 100644
--- a/pipelines/config.py
+++ b/pipelines/config.py
@@ -51,6 +51,7 @@ class FinetuneConfig:
         )
 
 
+@dataclass
 class BenchmarkConfig:
     """Top-level benchmark configuration loaded from TOML."""
 
@@ -102,6 +103,7 @@ class OpenAIConfig:
         )
 
 
+@dataclass
 class BertTopicTrainConfig:
     """BERTopic training configuration loaded from TOML."""