diff --git a/.stats.yml b/.stats.yml
index 6c87def4..2d482a8b 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 10
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic-fe4fbf0720b4ea03b05ff5225d36c94e06ab7aadbc4b227d0d35c4522b60bdb7.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/anthropic-cf96271afd65b396dc71c4e897d1d55a9526c122e3890bc87b5ff33316c93853.yml
diff --git a/api.md b/api.md
index ef21566a..1ebd122d 100644
--- a/api.md
+++ b/api.md
@@ -6,6 +6,7 @@ Types:
 from anthropic.types import (
     ContentBlock,
     ContentBlockDeltaEvent,
+    ContentBlockParam,
     ContentBlockStartEvent,
     ContentBlockStopEvent,
     ImageBlockParam,
diff --git a/src/anthropic/types/__init__.py b/src/anthropic/types/__init__.py
index c67e5e3e..0125a215 100644
--- a/src/anthropic/types/__init__.py
+++ b/src/anthropic/types/__init__.py
@@ -22,6 +22,7 @@
 from .tool_choice_param import ToolChoiceParam as ToolChoiceParam
 from .message_stop_event import MessageStopEvent as MessageStopEvent
 from .beta_error_response import BetaErrorResponse as BetaErrorResponse
+from .content_block_param import ContentBlockParam as ContentBlockParam
 from .message_delta_event import MessageDeltaEvent as MessageDeltaEvent
 from .message_delta_usage import MessageDeltaUsage as MessageDeltaUsage
 from .message_start_event import MessageStartEvent as MessageStartEvent
diff --git a/src/anthropic/types/content_block_param.py b/src/anthropic/types/content_block_param.py
new file mode 100644
index 00000000..65e9bd4a
--- /dev/null
+++ b/src/anthropic/types/content_block_param.py
@@ -0,0 +1,15 @@
+# File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
+
+from __future__ import annotations
+
+from typing import Union
+from typing_extensions import TypeAlias
+
+from .text_block_param import TextBlockParam
+from .image_block_param import ImageBlockParam
+from .tool_use_block_param import ToolUseBlockParam
+from .tool_result_block_param import ToolResultBlockParam
+
+__all__ = ["ContentBlockParam"]
+
+ContentBlockParam: TypeAlias = Union[TextBlockParam, ImageBlockParam, ToolUseBlockParam, ToolResultBlockParam]