diff --git a/backend/app/rag/llms/anthropic_vertex/base.py b/backend/app/rag/llms/anthropic_vertex/base.py
index d4b1c6bc..06a03dad 100644
--- a/backend/app/rag/llms/anthropic_vertex/base.py
+++ b/backend/app/rag/llms/anthropic_vertex/base.py
@@ -289,7 +289,6 @@ def gen() -> ChatResponseGen:
                             },
                         ),
                         delta=content_delta,
-                        raw=r,
                     )
                 elif isinstance(r, ContentBlockStartEvent):
                     if isinstance(r.content_block, ToolUseBlock):
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index b93d3373..6a233aeb 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -11,7 +11,7 @@ dependencies = [
     "pymysql>=1.1.1",
     "celery>=5.4.0",
     "dspy-ai>=2.4.9",
-    "langfuse>=2.36.2",
+    "langfuse>=2.39.3",
     "llama-index>=0.10.57",
     "alembic>=1.13.1",
     "pydantic>=2.7.4",
diff --git a/backend/requirements-dev.lock b/backend/requirements-dev.lock
index 35da6f7f..f57b6026 100644
--- a/backend/requirements-dev.lock
+++ b/backend/requirements-dev.lock
@@ -27,6 +27,7 @@ anthropic==0.31.0
 anyio==4.4.0
     # via anthropic
     # via httpx
+    # via langfuse
     # via openai
     # via starlette
     # via watchfiles
@@ -286,7 +287,7 @@ langchain-openai==0.1.16
     # via ragas
 langchain-text-splitters==0.2.2
     # via langchain
-langfuse==2.36.2
+langfuse==2.39.3
 langsmith==0.1.88
     # via langchain
     # via langchain-community
diff --git a/backend/requirements.lock b/backend/requirements.lock
index fcb9d590..df3a6351 100644
--- a/backend/requirements.lock
+++ b/backend/requirements.lock
@@ -27,6 +27,7 @@ anthropic==0.31.0
 anyio==4.4.0
     # via anthropic
     # via httpx
+    # via langfuse
     # via openai
     # via starlette
     # via watchfiles
@@ -266,7 +267,7 @@ langchain-openai==0.1.16
     # via ragas
 langchain-text-splitters==0.2.2
     # via langchain
-langfuse==2.36.2
+langfuse==2.39.3
 langsmith==0.1.88
     # via langchain
     # via langchain-community