diff --git a/litellm/litellm_core_utils/redact_messages.py b/litellm/litellm_core_utils/redact_messages.py
index 55741790954..18bacc88c6c 100644
--- a/litellm/litellm_core_utils/redact_messages.py
+++ b/litellm/litellm_core_utils/redact_messages.py
@@ -148,7 +148,7 @@ def _redacted_provider_specific_fields(fields: Mapping[str, object]) -> Mapping[
         **fields,
         **({"reasoning_content": REDACTED_BY_LITELLM} if fields.get("reasoning_content") is not None else {}),
         **({"reasoning": REDACTED_BY_LITELLM} if fields.get("reasoning") is not None else {}),
-        **{key: None for key in ("thinking_blocks", "reasoningContentBlocks", "citations") if key in fields},
+        **{key: None for key in ("thinking_blocks", "reasoningContentBlocks", "citations", "reasoning_details") if key in fields},
     }
 
 
diff --git a/tests/unit/litellm_core_utils/test_redact_messages.py b/tests/unit/litellm_core_utils/test_redact_messages.py
index f279cf82cef..dc9148f6526 100644
--- a/tests/unit/litellm_core_utils/test_redact_messages.py
+++ b/tests/unit/litellm_core_utils/test_redact_messages.py
@@ -52,6 +52,7 @@ def _provider_fields() -> dict[str, object]:
     return {
         "reasoning_content": SECRET,
         "reasoning": SECRET,
+        "reasoning_details": [{"type": "reasoning.text", "text": SECRET, "index": 0, "format": "unknown"}],
         "thinking_blocks": [{"type": "thinking", "thinking": SECRET}],
         "reasoningContentBlocks": [{"reasoningText": {"text": SECRET}}],
         "citations": [{"cited_text": SECRET}],