diff --git a/keep/step/step_provider_parameter.py b/keep/step/step_provider_parameter.py
index 5bc861474d..fce492bb71 100644
--- a/keep/step/step_provider_parameter.py
+++ b/keep/step/step_provider_parameter.py
@@ -1,7 +1,9 @@
-from pydantic import BaseModel
+from pydantic import BaseModel, Extra
 
 
 class StepProviderParameter(BaseModel):
+    class Config:
+        extra = Extra.forbid
     key: str  # the key to render
     safe: bool = False  # whether to validate this key or fail silently ("safe")
     default: str | int | bool = None  # default value if this key doesn't exist