diff --git a/litellm/__init__.py b/litellm/__init__.py
index 7adc528b94..a879e1e638 100644
--- a/litellm/__init__.py
+++ b/litellm/__init__.py
@@ -34,7 +34,7 @@ from litellm.types.utils import (
     all_litellm_params as _litellm_completion_params,
     CredentialItem,
     PriorityReservationDict,
-)  # maintain backwards compatibility for root param
+)  # maintain backwards compatibility for root param.
 from litellm._logging import (
     set_verbose,
     _turn_on_debug,
diff --git a/litellm/proxy/guardrails/guardrail_registry.py b/litellm/proxy/guardrails/guardrail_registry.py
index d5e82695c7..9369acd646 100644
--- a/litellm/proxy/guardrails/guardrail_registry.py
+++ b/litellm/proxy/guardrails/guardrail_registry.py
@@ -232,7 +232,13 @@ class GuardrailRegistry:
         """
         try:
             guardrail_name = guardrail.get("guardrail_name")
-            litellm_params: str = safe_dumps(dict(guardrail.get("litellm_params", {})))
+            # Properly serialize LitellmParams Pydantic model to dict
+            litellm_params_obj = guardrail.get("litellm_params", {})
+            if hasattr(litellm_params_obj, 'model_dump'):
+                litellm_params_dict = litellm_params_obj.model_dump()
+            else:
+                litellm_params_dict = dict(litellm_params_obj) if litellm_params_obj else {}
+            litellm_params: str = safe_dumps(litellm_params_dict)
             guardrail_info: str = safe_dumps(guardrail.get("guardrail_info", {}))
 
             # Create guardrail in DB
@@ -278,7 +284,13 @@ class GuardrailRegistry:
         """
         try:
             guardrail_name = guardrail.get("guardrail_name")
-            litellm_params: str = safe_dumps(dict(guardrail.get("litellm_params", {})))
+            # Properly serialize LitellmParams Pydantic model to dict
+            litellm_params_obj = guardrail.get("litellm_params", {})
+            if hasattr(litellm_params_obj, 'model_dump'):
+                litellm_params_dict = litellm_params_obj.model_dump()
+            else:
+                litellm_params_dict = dict(litellm_params_obj) if litellm_params_obj else {}
+            litellm_params: str = safe_dumps(litellm_params_dict)
             guardrail_info: str = safe_dumps(guardrail.get("guardrail_info", {}))
 
             # Update in DB