diff --git a/litellm/llms/anthropic/experimental_pass_through/adapters/streaming_iterator.py b/litellm/llms/anthropic/experimental_pass_through/adapters/streaming_iterator.py
index cdf8ac5ca82..7f17526e75c 100644
--- a/litellm/llms/anthropic/experimental_pass_through/adapters/streaming_iterator.py
+++ b/litellm/llms/anthropic/experimental_pass_through/adapters/streaming_iterator.py
@@ -41,7 +41,6 @@ class AnthropicStreamWrapper(AdapterCompletionStreamWrapper):
         type="text",
         text="",
     )
-    pending_new_content_block: bool = False
     chunk_queue: deque = deque()  # Queue for buffering multiple chunks
 
     def __init__(