diff --git a/python/langsmith/_internal/_serde.py b/python/langsmith/_internal/_serde.py
index 05d3c8857..a575f3710 100644
--- a/python/langsmith/_internal/_serde.py
+++ b/python/langsmith/_internal/_serde.py
@@ -105,7 +105,7 @@ def _serialize_json(obj: Any) -> Any:
                         return str(response)
                     return response
                 except Exception as e:
-                    logger.error(
+                    logger.debug(
                         f"Failed to use {attr} to serialize {type(obj)} to"
                         f" JSON: {repr(e)}"
                     )
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 72730699c..f53bca54f 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langsmith"
-version = "0.3.7"
+version = "0.3.8"
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 authors = ["LangChain <support@langchain.dev>"]
 license = "MIT"