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 306bcd9bb2..bcfbee9fc3 100644
--- a/litellm/llms/anthropic/experimental_pass_through/adapters/streaming_iterator.py
+++ b/litellm/llms/anthropic/experimental_pass_through/adapters/streaming_iterator.py
@@ -7,7 +7,7 @@ from collections import deque
 from typing import TYPE_CHECKING, Any, AsyncIterator, Iterator, Literal, Optional
 
 from litellm import verbose_logger
-from litellm.types.llms.anthropic import UsageDelta
+from litellm.types.llms.anthropic import UsageDelta, ToolUseBlock
 from litellm.types.utils import AdapterCompletionStreamWrapper
 
 if TYPE_CHECKING:
@@ -270,7 +270,6 @@ class AnthropicStreamWrapper(AdapterCompletionStreamWrapper):
                             processed_chunk.get("delta", {}).get("stop_reason")
                             is not None
                         ):
-
                             self.holding_stop_reason_chunk = processed_chunk
                         else:
                             self.chunk_queue.append(processed_chunk)
@@ -380,4 +379,11 @@ class AnthropicStreamWrapper(AdapterCompletionStreamWrapper):
             self.current_content_block_start = content_block_start
             return True
 
+        # For parallel tool calls, we'll necessarily have a new content block
+        # if we get a function name since it signals a new tool call
+        if block_type == "tool_use" and content_block_start.get("name"):
+            self.current_content_block_type = block_type
+            self.current_content_block_start = content_block_start
+            return True
+
         return False