diff --git a/llama-index-integrations/llms/llama-index-llms-anthropic/llama_index/llms/anthropic/utils.py b/llama-index-integrations/llms/llama-index-llms-anthropic/llama_index/llms/anthropic/utils.py
index 3870234abece2..f38293060371e 100644
--- a/llama-index-integrations/llms/llama-index-llms-anthropic/llama_index/llms/anthropic/utils.py
+++ b/llama-index-integrations/llms/llama-index-llms-anthropic/llama_index/llms/anthropic/utils.py
@@ -120,7 +120,7 @@ def messages_to_anthropic_messages(
                         ),
                     )
                     if "cache_control" in message.additional_kwargs
-                    else [TextBlockParam(text=message.content, type="text")]
+                    else TextBlockParam(text=message.content, type="text")
                 )
                 content.append(content_)
 
diff --git a/llama-index-integrations/llms/llama-index-llms-anthropic/pyproject.toml b/llama-index-integrations/llms/llama-index-llms-anthropic/pyproject.toml
index 292bda32a6705..8c1871fec9eaa 100644
--- a/llama-index-integrations/llms/llama-index-llms-anthropic/pyproject.toml
+++ b/llama-index-integrations/llms/llama-index-llms-anthropic/pyproject.toml
@@ -27,7 +27,7 @@ exclude = ["**/BUILD"]
 license = "MIT"
 name = "llama-index-llms-anthropic"
 readme = "README.md"
-version = "0.3.3"
+version = "0.3.4"
 
 [tool.poetry.dependencies]
 python = ">=3.8.1,<4.0"