diff --git a/litellm/proxy/health_check.py b/litellm/proxy/health_check.py
index 3f67b8b477c..976e9eb2de8 100644
--- a/litellm/proxy/health_check.py
+++ b/litellm/proxy/health_check.py
@@ -128,9 +128,15 @@ def _is_health_check_model_metadata_key(key: str) -> bool:
     return key.startswith("supports_") or key in _HEALTH_CHECK_MODEL_METADATA_KEYS
 
 
-def _strip_model_metadata_from_health_params(litellm_params: dict) -> dict:
+def _strip_model_metadata_from_health_params(
+    litellm_params: Mapping[str, object],
+) -> dict:  # mutable-ok: ahealth_check kwargs and LiteLLM_Params(**probe) need a mutable dict
     """Drop model_info capability keys that leaked onto the health-check probe params."""
-    return {k: v for k, v in litellm_params.items() if not _is_health_check_model_metadata_key(k)}
+    return {  # mutable-ok: ahealth_check kwargs and LiteLLM_Params(**probe) need a mutable dict
+        k: v
+        for k, v in litellm_params.items()
+        if not _is_health_check_model_metadata_key(k)
+    }
 
 
 def _get_process_rss_mb() -> float | None:
@@ -755,7 +761,7 @@ def _update_litellm_params_for_health_check(model_info: dict, litellm_params: di
       the provider request body (#38941)
     """
     # Copy first: callers pass the live deployment litellm_params dict.
-    litellm_params = dict(litellm_params)
+    litellm_params = dict(litellm_params)  # mutable-ok: copy so probe mutations don't rewrite the shared deployment dict  # rebind-ok: local probe copy
     mode: Final = _resolve_health_check_mode(
         model_info,
         litellm_params,  # any-ok: untyped router config dict